/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/sum_25x0-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:50:58,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:50:58,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:50:58,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:50:58,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:50:58,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:50:58,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:50:58,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:50:58,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:50:58,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:50:58,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:50:58,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:50:58,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:50:58,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:50:58,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:50:58,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:50:58,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:50:58,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:50:58,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:50:58,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:50:58,630 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 01:50:58,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:50:58,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:50:58,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:50:58,666 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:50:58,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:50:58,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:50:58,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:50:58,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:50:58,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:50:58,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:50:58,670 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:50:58,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:50:58,670 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:50:58,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:50:58,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:50:58,672 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:50:58,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:50:58,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:50:58,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:50:58,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:50:58,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:50:58,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:50:58,674 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:50:58,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:50:59,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:50:59,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:50:59,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:50:59,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:50:59,193 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:50:59,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_25x0-2.c [2021-02-22 01:50:59,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab874dfc/5b1c10fbb4154e5281383d3a51aab8ce/FLAGbaa3d9305 [2021-02-22 01:50:59,962 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:50:59,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_25x0-2.c [2021-02-22 01:50:59,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab874dfc/5b1c10fbb4154e5281383d3a51aab8ce/FLAGbaa3d9305 [2021-02-22 01:51:00,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab874dfc/5b1c10fbb4154e5281383d3a51aab8ce [2021-02-22 01:51:00,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:51:00,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:51:00,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:51:00,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:51:00,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:51:00,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:51:00" (1/1) ... [2021-02-22 01:51:00,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c7ee7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:00, skipping insertion in model container [2021-02-22 01:51:00,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:51:00" (1/1) ... [2021-02-22 01:51:00,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:51:00,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:51:00,551 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/sum_25x0-2.c[481,494] [2021-02-22 01:51:00,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:51:00,569 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:51:00,588 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/sum_25x0-2.c[481,494] [2021-02-22 01:51:00,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:51:00,609 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:51:00,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:00 WrapperNode [2021-02-22 01:51:00,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:51:00,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:51:00,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:51:00,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:51:00,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:00" (1/1) ... [2021-02-22 01:51:00,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:00" (1/1) ... [2021-02-22 01:51:00,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:00" (1/1) ... [2021-02-22 01:51:00,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:00" (1/1) ... [2021-02-22 01:51:00,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:00" (1/1) ... [2021-02-22 01:51:00,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:00" (1/1) ... [2021-02-22 01:51:00,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:00" (1/1) ... [2021-02-22 01:51:00,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:51:00,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:51:00,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:51:00,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:51:00,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:00" (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 01:51:00,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:51:00,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:51:00,783 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:51:00,783 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-02-22 01:51:00,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:51:00,783 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:51:00,784 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:51:00,784 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:51:00,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:51:00,784 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-02-22 01:51:00,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:51:00,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:51:00,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:51:00,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:51:00,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:51:00,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:51:00,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:51:01,285 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:51:01,286 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:51:01,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:51:01 BoogieIcfgContainer [2021-02-22 01:51:01,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:51:01,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:51:01,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:51:01,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:51:01,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:51:00" (1/3) ... [2021-02-22 01:51:01,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38691411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:51:01, skipping insertion in model container [2021-02-22 01:51:01,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:00" (2/3) ... [2021-02-22 01:51:01,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38691411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:51:01, skipping insertion in model container [2021-02-22 01:51:01,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:51:01" (3/3) ... [2021-02-22 01:51:01,315 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_25x0-2.c [2021-02-22 01:51:01,335 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:51:01,348 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:51:01,381 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:51:01,418 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:51:01,419 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:51:01,419 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:51:01,419 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:51:01,419 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:51:01,419 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:51:01,420 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:51:01,420 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:51:01,441 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2021-02-22 01:51:01,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-22 01:51:01,456 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:01,458 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] [2021-02-22 01:51:01,458 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:01,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:01,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133070, now seen corresponding path program 1 times [2021-02-22 01:51:01,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:01,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454907127] [2021-02-22 01:51:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:01,587 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:01,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:01,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:01,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:01,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:01,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:01,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:02,027 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-02-22 01:51:02,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:02,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:02,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:02,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:02,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:02,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:02,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:02,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:02,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:02,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:02,187 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 01:51:02,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454907127] [2021-02-22 01:51:02,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:02,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 01:51:02,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791072653] [2021-02-22 01:51:02,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 01:51:02,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:02,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 01:51:02,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:51:02,216 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2021-02-22 01:51:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:02,554 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-02-22 01:51:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:51:02,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-02-22 01:51:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:02,584 INFO L225 Difference]: With dead ends: 48 [2021-02-22 01:51:02,584 INFO L226 Difference]: Without dead ends: 33 [2021-02-22 01:51:02,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:51:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-22 01:51:02,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-02-22 01:51:02,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-02-22 01:51:02,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-02-22 01:51:02,682 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2021-02-22 01:51:02,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:02,683 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-02-22 01:51:02,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 01:51:02,684 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-02-22 01:51:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-22 01:51:02,686 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:02,686 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:51:02,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:51:02,687 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:02,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:02,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1822905144, now seen corresponding path program 1 times [2021-02-22 01:51:02,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:02,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160059430] [2021-02-22 01:51:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:02,693 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:02,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:02,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:02,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:02,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:02,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:02,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:02,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:02,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:02,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:02,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:02,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:02,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:02,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:02,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:02,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:02,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:02,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:02,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:02,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:02,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:02,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-22 01:51:02,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160059430] [2021-02-22 01:51:02,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:02,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:51:02,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008874752] [2021-02-22 01:51:02,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:51:02,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:03,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:51:03,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:51:03,001 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2021-02-22 01:51:03,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:03,261 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-02-22 01:51:03,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 01:51:03,262 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2021-02-22 01:51:03,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:03,264 INFO L225 Difference]: With dead ends: 44 [2021-02-22 01:51:03,264 INFO L226 Difference]: Without dead ends: 38 [2021-02-22 01:51:03,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-22 01:51:03,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-22 01:51:03,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-22 01:51:03,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-22 01:51:03,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-02-22 01:51:03,284 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 35 [2021-02-22 01:51:03,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:03,285 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-02-22 01:51:03,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:51:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-02-22 01:51:03,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-22 01:51:03,287 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:03,287 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2021-02-22 01:51:03,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:51:03,288 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:03,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1004193542, now seen corresponding path program 2 times [2021-02-22 01:51:03,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:03,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041546501] [2021-02-22 01:51:03,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:03,293 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:03,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:03,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:03,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:03,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:03,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:03,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:03,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:03,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:03,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:03,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:03,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:03,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:03,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:03,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:03,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:03,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:03,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:03,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:03,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:03,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:03,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:03,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:03,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:03,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:03,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:03,614 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 01:51:03,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041546501] [2021-02-22 01:51:03,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:03,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:51:03,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588306344] [2021-02-22 01:51:03,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:51:03,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:03,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:51:03,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:51:03,623 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 9 states. [2021-02-22 01:51:03,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:03,947 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2021-02-22 01:51:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 01:51:03,947 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2021-02-22 01:51:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:03,949 INFO L225 Difference]: With dead ends: 49 [2021-02-22 01:51:03,950 INFO L226 Difference]: Without dead ends: 43 [2021-02-22 01:51:03,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:51:03,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-02-22 01:51:03,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-02-22 01:51:03,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-22 01:51:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-02-22 01:51:03,966 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 44 [2021-02-22 01:51:03,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:03,967 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-02-22 01:51:03,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:51:03,967 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-02-22 01:51:03,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-22 01:51:03,969 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:03,969 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2021-02-22 01:51:03,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:51:03,970 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:03,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:03,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1655724848, now seen corresponding path program 3 times [2021-02-22 01:51:03,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:03,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225760629] [2021-02-22 01:51:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:03,974 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:04,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:04,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:04,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:04,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:04,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:04,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:04,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:04,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:04,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:04,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-02-22 01:51:04,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225760629] [2021-02-22 01:51:04,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:04,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:51:04,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584387331] [2021-02-22 01:51:04,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:51:04,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:04,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:51:04,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:51:04,268 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 10 states. [2021-02-22 01:51:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:04,634 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2021-02-22 01:51:04,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:51:04,635 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2021-02-22 01:51:04,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:04,637 INFO L225 Difference]: With dead ends: 54 [2021-02-22 01:51:04,637 INFO L226 Difference]: Without dead ends: 48 [2021-02-22 01:51:04,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-02-22 01:51:04,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-22 01:51:04,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-02-22 01:51:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-22 01:51:04,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-02-22 01:51:04,653 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 53 [2021-02-22 01:51:04,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:04,654 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-02-22 01:51:04,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:51:04,654 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-02-22 01:51:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-22 01:51:04,656 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:04,656 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:51:04,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:51:04,657 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:04,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:04,658 INFO L82 PathProgramCache]: Analyzing trace with hash 54098690, now seen corresponding path program 4 times [2021-02-22 01:51:04,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:04,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588977321] [2021-02-22 01:51:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:04,661 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:04,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:04,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:04,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:04,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:04,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:04,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:04,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:04,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:04,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:04,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:05,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:05,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-02-22 01:51:05,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588977321] [2021-02-22 01:51:05,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:05,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 01:51:05,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050665586] [2021-02-22 01:51:05,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 01:51:05,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:05,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 01:51:05,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:51:05,070 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 11 states. [2021-02-22 01:51:05,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:05,510 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2021-02-22 01:51:05,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 01:51:05,510 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2021-02-22 01:51:05,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:05,512 INFO L225 Difference]: With dead ends: 59 [2021-02-22 01:51:05,512 INFO L226 Difference]: Without dead ends: 53 [2021-02-22 01:51:05,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:51:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-22 01:51:05,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-02-22 01:51:05,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-02-22 01:51:05,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-02-22 01:51:05,528 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 62 [2021-02-22 01:51:05,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:05,528 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-02-22 01:51:05,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 01:51:05,529 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-02-22 01:51:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-22 01:51:05,530 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:05,530 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:51:05,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:51:05,531 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:05,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:05,531 INFO L82 PathProgramCache]: Analyzing trace with hash -406982872, now seen corresponding path program 5 times [2021-02-22 01:51:05,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:05,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98017270] [2021-02-22 01:51:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:05,535 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:05,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:05,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:05,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:05,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:05,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:05,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:05,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:05,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:05,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:05,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:05,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:05,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:05,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-02-22 01:51:05,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98017270] [2021-02-22 01:51:05,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:05,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-22 01:51:05,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300837598] [2021-02-22 01:51:05,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-22 01:51:05,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:05,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-22 01:51:05,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-02-22 01:51:05,818 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 12 states. [2021-02-22 01:51:06,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:06,290 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2021-02-22 01:51:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:51:06,291 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2021-02-22 01:51:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:06,293 INFO L225 Difference]: With dead ends: 64 [2021-02-22 01:51:06,293 INFO L226 Difference]: Without dead ends: 58 [2021-02-22 01:51:06,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-02-22 01:51:06,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-22 01:51:06,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-22 01:51:06,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-22 01:51:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2021-02-22 01:51:06,309 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 71 [2021-02-22 01:51:06,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:06,310 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2021-02-22 01:51:06,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-22 01:51:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2021-02-22 01:51:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-22 01:51:06,311 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:06,312 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:51:06,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:51:06,312 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:06,313 INFO L82 PathProgramCache]: Analyzing trace with hash 507179274, now seen corresponding path program 6 times [2021-02-22 01:51:06,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:06,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315012898] [2021-02-22 01:51:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:06,316 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:06,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:06,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:06,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:06,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:06,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:06,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:06,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:06,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:06,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:06,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:06,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:06,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:06,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:06,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-02-22 01:51:06,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315012898] [2021-02-22 01:51:06,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:06,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-22 01:51:06,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636605042] [2021-02-22 01:51:06,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-22 01:51:06,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:06,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-22 01:51:06,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-02-22 01:51:06,681 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 13 states. [2021-02-22 01:51:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:07,216 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2021-02-22 01:51:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 01:51:07,216 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2021-02-22 01:51:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:07,220 INFO L225 Difference]: With dead ends: 69 [2021-02-22 01:51:07,220 INFO L226 Difference]: Without dead ends: 63 [2021-02-22 01:51:07,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2021-02-22 01:51:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-02-22 01:51:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-02-22 01:51:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-02-22 01:51:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-02-22 01:51:07,248 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2021-02-22 01:51:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:07,249 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-02-22 01:51:07,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-22 01:51:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-02-22 01:51:07,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-22 01:51:07,257 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:07,258 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 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 01:51:07,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 01:51:07,258 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:07,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:07,260 INFO L82 PathProgramCache]: Analyzing trace with hash -326332640, now seen corresponding path program 7 times [2021-02-22 01:51:07,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:07,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86942921] [2021-02-22 01:51:07,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:07,265 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:07,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:07,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:07,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:07,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:07,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:07,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:07,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:07,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:07,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:07,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:07,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:07,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:07,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:07,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:07,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-02-22 01:51:07,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86942921] [2021-02-22 01:51:07,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:07,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 01:51:07,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187852409] [2021-02-22 01:51:07,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 01:51:07,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:07,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 01:51:07,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:51:07,684 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 14 states. [2021-02-22 01:51:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:08,220 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2021-02-22 01:51:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-22 01:51:08,221 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2021-02-22 01:51:08,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:08,228 INFO L225 Difference]: With dead ends: 74 [2021-02-22 01:51:08,229 INFO L226 Difference]: Without dead ends: 68 [2021-02-22 01:51:08,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2021-02-22 01:51:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-22 01:51:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-02-22 01:51:08,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-22 01:51:08,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2021-02-22 01:51:08,267 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 89 [2021-02-22 01:51:08,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:08,267 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2021-02-22 01:51:08,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 01:51:08,267 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2021-02-22 01:51:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-22 01:51:08,278 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:08,278 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 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 01:51:08,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 01:51:08,279 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:08,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:08,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1949113106, now seen corresponding path program 8 times [2021-02-22 01:51:08,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:08,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189249524] [2021-02-22 01:51:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:08,283 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:08,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:08,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:08,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:08,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:08,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:08,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:08,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:08,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:08,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:08,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:08,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:08,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:08,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:08,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:08,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-02-22 01:51:08,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189249524] [2021-02-22 01:51:08,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:08,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-22 01:51:08,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776322813] [2021-02-22 01:51:08,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-22 01:51:08,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:08,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-22 01:51:08,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-22 01:51:08,855 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 15 states. [2021-02-22 01:51:09,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:09,425 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2021-02-22 01:51:09,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 01:51:09,426 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2021-02-22 01:51:09,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:09,441 INFO L225 Difference]: With dead ends: 79 [2021-02-22 01:51:09,441 INFO L226 Difference]: Without dead ends: 73 [2021-02-22 01:51:09,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2021-02-22 01:51:09,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-22 01:51:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-22 01:51:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-22 01:51:09,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-02-22 01:51:09,484 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 98 [2021-02-22 01:51:09,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:09,484 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-02-22 01:51:09,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-22 01:51:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-02-22 01:51:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-02-22 01:51:09,486 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:09,487 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 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 01:51:09,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 01:51:09,488 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:09,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:09,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1213774616, now seen corresponding path program 9 times [2021-02-22 01:51:09,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:09,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136133317] [2021-02-22 01:51:09,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:09,494 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:09,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:09,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:09,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:09,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:09,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:09,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:09,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:09,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:09,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:09,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:09,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:09,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:09,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:09,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:09,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:09,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:09,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-02-22 01:51:09,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136133317] [2021-02-22 01:51:09,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:09,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-22 01:51:09,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91929512] [2021-02-22 01:51:09,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-22 01:51:09,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:09,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-22 01:51:09,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-02-22 01:51:09,953 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 16 states. [2021-02-22 01:51:10,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:10,620 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-02-22 01:51:10,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 01:51:10,620 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 107 [2021-02-22 01:51:10,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:10,622 INFO L225 Difference]: With dead ends: 84 [2021-02-22 01:51:10,622 INFO L226 Difference]: Without dead ends: 78 [2021-02-22 01:51:10,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2021-02-22 01:51:10,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-22 01:51:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-02-22 01:51:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-22 01:51:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2021-02-22 01:51:10,638 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 107 [2021-02-22 01:51:10,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:10,639 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2021-02-22 01:51:10,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-22 01:51:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2021-02-22 01:51:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-02-22 01:51:10,640 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:10,641 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 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 01:51:10,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-22 01:51:10,641 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:10,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:10,642 INFO L82 PathProgramCache]: Analyzing trace with hash -241993446, now seen corresponding path program 10 times [2021-02-22 01:51:10,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:10,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291204165] [2021-02-22 01:51:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:10,644 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:10,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:10,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:10,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:10,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:10,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:10,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:10,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:10,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:10,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:10,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:10,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:10,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:10,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:10,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:11,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:11,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:11,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:11,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:11,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:11,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:11,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:11,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:11,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:11,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:11,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:11,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:11,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:11,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:11,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:11,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-02-22 01:51:11,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291204165] [2021-02-22 01:51:11,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:11,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-22 01:51:11,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541735623] [2021-02-22 01:51:11,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-22 01:51:11,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:11,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-22 01:51:11,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2021-02-22 01:51:11,246 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 17 states. [2021-02-22 01:51:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:11,881 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2021-02-22 01:51:11,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-22 01:51:11,881 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 116 [2021-02-22 01:51:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:11,883 INFO L225 Difference]: With dead ends: 89 [2021-02-22 01:51:11,883 INFO L226 Difference]: Without dead ends: 83 [2021-02-22 01:51:11,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=283, Invalid=587, Unknown=0, NotChecked=0, Total=870 [2021-02-22 01:51:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-22 01:51:11,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-02-22 01:51:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-02-22 01:51:11,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2021-02-22 01:51:11,897 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 116 [2021-02-22 01:51:11,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:11,898 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2021-02-22 01:51:11,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-22 01:51:11,898 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2021-02-22 01:51:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-02-22 01:51:11,900 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:11,900 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 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 01:51:11,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-22 01:51:11,900 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:11,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:11,902 INFO L82 PathProgramCache]: Analyzing trace with hash -790695152, now seen corresponding path program 11 times [2021-02-22 01:51:11,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:11,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298258732] [2021-02-22 01:51:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:11,920 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:11,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:11,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:11,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:11,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:11,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:11,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:12,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:12,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:12,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:12,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:12,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:12,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:12,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:12,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:12,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:12,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:12,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:12,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:12,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:12,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:12,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:12,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-02-22 01:51:12,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298258732] [2021-02-22 01:51:12,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:12,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-22 01:51:12,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429827096] [2021-02-22 01:51:12,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-22 01:51:12,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:12,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-22 01:51:12,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:51:12,468 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 18 states. [2021-02-22 01:51:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:13,267 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2021-02-22 01:51:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-22 01:51:13,268 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 125 [2021-02-22 01:51:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:13,270 INFO L225 Difference]: With dead ends: 94 [2021-02-22 01:51:13,270 INFO L226 Difference]: Without dead ends: 88 [2021-02-22 01:51:13,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=667, Unknown=0, NotChecked=0, Total=992 [2021-02-22 01:51:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-02-22 01:51:13,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-02-22 01:51:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-02-22 01:51:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2021-02-22 01:51:13,285 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 125 [2021-02-22 01:51:13,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:13,285 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2021-02-22 01:51:13,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-22 01:51:13,286 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2021-02-22 01:51:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-02-22 01:51:13,287 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:13,287 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 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 01:51:13,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-22 01:51:13,288 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:13,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:13,288 INFO L82 PathProgramCache]: Analyzing trace with hash -126776542, now seen corresponding path program 12 times [2021-02-22 01:51:13,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:13,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468733776] [2021-02-22 01:51:13,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:13,291 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:13,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:13,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:13,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:13,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:13,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:13,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:13,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-02-22 01:51:14,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468733776] [2021-02-22 01:51:14,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:14,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-22 01:51:14,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552124731] [2021-02-22 01:51:14,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-22 01:51:14,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:14,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-22 01:51:14,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2021-02-22 01:51:14,112 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 19 states. [2021-02-22 01:51:15,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:15,004 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2021-02-22 01:51:15,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-22 01:51:15,005 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 134 [2021-02-22 01:51:15,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:15,008 INFO L225 Difference]: With dead ends: 99 [2021-02-22 01:51:15,008 INFO L226 Difference]: Without dead ends: 93 [2021-02-22 01:51:15,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=370, Invalid=752, Unknown=0, NotChecked=0, Total=1122 [2021-02-22 01:51:15,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-02-22 01:51:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-02-22 01:51:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-02-22 01:51:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2021-02-22 01:51:15,027 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 134 [2021-02-22 01:51:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:15,028 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2021-02-22 01:51:15,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-22 01:51:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2021-02-22 01:51:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-02-22 01:51:15,030 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:15,031 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 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 01:51:15,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-22 01:51:15,031 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:15,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:15,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1918613256, now seen corresponding path program 13 times [2021-02-22 01:51:15,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:15,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21987344] [2021-02-22 01:51:15,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:15,041 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:15,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:15,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:15,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:15,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:15,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:15,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-02-22 01:51:15,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21987344] [2021-02-22 01:51:15,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:15,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-22 01:51:15,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908467978] [2021-02-22 01:51:15,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-22 01:51:15,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-22 01:51:15,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-02-22 01:51:15,874 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 20 states. [2021-02-22 01:51:16,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:16,742 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2021-02-22 01:51:16,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-22 01:51:16,743 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 143 [2021-02-22 01:51:16,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:16,745 INFO L225 Difference]: With dead ends: 104 [2021-02-22 01:51:16,745 INFO L226 Difference]: Without dead ends: 98 [2021-02-22 01:51:16,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=418, Invalid=842, Unknown=0, NotChecked=0, Total=1260 [2021-02-22 01:51:16,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-02-22 01:51:16,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-02-22 01:51:16,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-02-22 01:51:16,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2021-02-22 01:51:16,764 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 143 [2021-02-22 01:51:16,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:16,765 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2021-02-22 01:51:16,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-22 01:51:16,765 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2021-02-22 01:51:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-02-22 01:51:16,768 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:16,768 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 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 01:51:16,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-22 01:51:16,769 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:16,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:16,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1212862762, now seen corresponding path program 14 times [2021-02-22 01:51:16,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:16,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916349010] [2021-02-22 01:51:16,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:16,774 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:16,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:16,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:16,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:16,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:16,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:16,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:16,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:16,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:16,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:16,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:16,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:16,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:16,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:16,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:16,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:16,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:16,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:16,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:16,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:17,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:17,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:17,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:17,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:17,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:17,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:17,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:17,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:17,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:17,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:17,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:17,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:17,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:17,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:17,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-02-22 01:51:17,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916349010] [2021-02-22 01:51:17,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:17,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-22 01:51:17,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679750782] [2021-02-22 01:51:17,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-22 01:51:17,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:17,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-22 01:51:17,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2021-02-22 01:51:17,570 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 21 states. [2021-02-22 01:51:18,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:18,551 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2021-02-22 01:51:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-22 01:51:18,552 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 152 [2021-02-22 01:51:18,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:18,553 INFO L225 Difference]: With dead ends: 109 [2021-02-22 01:51:18,553 INFO L226 Difference]: Without dead ends: 103 [2021-02-22 01:51:18,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=469, Invalid=937, Unknown=0, NotChecked=0, Total=1406 [2021-02-22 01:51:18,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-02-22 01:51:18,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-02-22 01:51:18,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-02-22 01:51:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2021-02-22 01:51:18,574 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 152 [2021-02-22 01:51:18,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:18,574 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2021-02-22 01:51:18,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-22 01:51:18,575 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2021-02-22 01:51:18,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-22 01:51:18,577 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:18,577 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 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 01:51:18,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-22 01:51:18,578 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:18,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:18,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1200326400, now seen corresponding path program 15 times [2021-02-22 01:51:18,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:18,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705183808] [2021-02-22 01:51:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:18,582 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:18,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:18,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:18,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:18,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:18,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:18,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:18,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:18,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:18,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:18,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:18,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:18,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:18,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:18,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:18,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:19,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:19,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:19,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:19,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:19,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:19,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:19,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:19,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:19,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:19,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-02-22 01:51:19,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705183808] [2021-02-22 01:51:19,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:19,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-22 01:51:19,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575349688] [2021-02-22 01:51:19,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-22 01:51:19,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:19,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-22 01:51:19,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=284, Unknown=0, NotChecked=0, Total=462 [2021-02-22 01:51:19,486 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 22 states. [2021-02-22 01:51:20,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:20,510 INFO L93 Difference]: Finished difference Result 114 states and 115 transitions. [2021-02-22 01:51:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-22 01:51:20,511 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 161 [2021-02-22 01:51:20,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:20,512 INFO L225 Difference]: With dead ends: 114 [2021-02-22 01:51:20,512 INFO L226 Difference]: Without dead ends: 108 [2021-02-22 01:51:20,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=523, Invalid=1037, Unknown=0, NotChecked=0, Total=1560 [2021-02-22 01:51:20,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-02-22 01:51:20,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-02-22 01:51:20,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-02-22 01:51:20,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2021-02-22 01:51:20,529 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 161 [2021-02-22 01:51:20,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:20,530 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2021-02-22 01:51:20,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-22 01:51:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2021-02-22 01:51:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-22 01:51:20,533 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:20,533 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 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 01:51:20,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-22 01:51:20,533 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:20,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:20,534 INFO L82 PathProgramCache]: Analyzing trace with hash -433927374, now seen corresponding path program 16 times [2021-02-22 01:51:20,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:20,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752852882] [2021-02-22 01:51:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:20,537 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:20,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:20,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:20,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:20,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:20,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:20,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:20,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:20,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:20,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:20,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:20,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:20,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:20,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:20,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:20,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:20,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:21,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:21,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:21,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:21,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:21,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:21,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:21,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:21,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:21,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:21,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-02-22 01:51:21,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752852882] [2021-02-22 01:51:21,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:21,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-02-22 01:51:21,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596055912] [2021-02-22 01:51:21,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-22 01:51:21,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:21,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-22 01:51:21,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2021-02-22 01:51:21,454 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand 23 states. [2021-02-22 01:51:22,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:22,468 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2021-02-22 01:51:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-22 01:51:22,468 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 170 [2021-02-22 01:51:22,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:22,470 INFO L225 Difference]: With dead ends: 119 [2021-02-22 01:51:22,470 INFO L226 Difference]: Without dead ends: 113 [2021-02-22 01:51:22,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=580, Invalid=1142, Unknown=0, NotChecked=0, Total=1722 [2021-02-22 01:51:22,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-02-22 01:51:22,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-02-22 01:51:22,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-02-22 01:51:22,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2021-02-22 01:51:22,487 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 170 [2021-02-22 01:51:22,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:22,487 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2021-02-22 01:51:22,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-22 01:51:22,488 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2021-02-22 01:51:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-02-22 01:51:22,490 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:22,490 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 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 01:51:22,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-22 01:51:22,491 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:22,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:22,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1314200840, now seen corresponding path program 17 times [2021-02-22 01:51:22,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:22,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502100809] [2021-02-22 01:51:22,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:22,494 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:22,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:22,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:22,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:22,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:22,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:22,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:22,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:22,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:22,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:22,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:22,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:22,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:22,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:22,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:22,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:22,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:23,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:23,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:23,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:23,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:23,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:23,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:23,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:23,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:23,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:23,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:23,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2021-02-22 01:51:23,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502100809] [2021-02-22 01:51:23,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:23,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-22 01:51:23,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716382651] [2021-02-22 01:51:23,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-22 01:51:23,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:23,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-22 01:51:23,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=335, Unknown=0, NotChecked=0, Total=552 [2021-02-22 01:51:23,517 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 24 states. [2021-02-22 01:51:24,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:24,596 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2021-02-22 01:51:24,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-22 01:51:24,597 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 179 [2021-02-22 01:51:24,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:24,601 INFO L225 Difference]: With dead ends: 124 [2021-02-22 01:51:24,601 INFO L226 Difference]: Without dead ends: 118 [2021-02-22 01:51:24,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=640, Invalid=1252, Unknown=0, NotChecked=0, Total=1892 [2021-02-22 01:51:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-02-22 01:51:24,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-02-22 01:51:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-02-22 01:51:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2021-02-22 01:51:24,618 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 179 [2021-02-22 01:51:24,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:24,618 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2021-02-22 01:51:24,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-22 01:51:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2021-02-22 01:51:24,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-02-22 01:51:24,621 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:24,621 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 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 01:51:24,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-22 01:51:24,621 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:24,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:24,622 INFO L82 PathProgramCache]: Analyzing trace with hash 75299130, now seen corresponding path program 18 times [2021-02-22 01:51:24,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:24,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854627575] [2021-02-22 01:51:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:24,625 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:24,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:24,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:24,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:24,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:24,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:24,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:24,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:24,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:24,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:24,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:24,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:24,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:24,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:24,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:24,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:24,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:24,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:24,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:24,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:24,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:24,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:24,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:24,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:24,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:25,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:25,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:25,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:25,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:25,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:25,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:25,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:25,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:25,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:25,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:25,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:25,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:25,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:25,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:25,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2021-02-22 01:51:25,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854627575] [2021-02-22 01:51:25,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:25,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-02-22 01:51:25,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655475630] [2021-02-22 01:51:25,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-22 01:51:25,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:25,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-22 01:51:25,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=362, Unknown=0, NotChecked=0, Total=600 [2021-02-22 01:51:25,774 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 25 states. [2021-02-22 01:51:26,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:26,984 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2021-02-22 01:51:26,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-22 01:51:26,986 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 188 [2021-02-22 01:51:26,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:26,987 INFO L225 Difference]: With dead ends: 129 [2021-02-22 01:51:26,987 INFO L226 Difference]: Without dead ends: 123 [2021-02-22 01:51:26,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=703, Invalid=1367, Unknown=0, NotChecked=0, Total=2070 [2021-02-22 01:51:26,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-02-22 01:51:27,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-02-22 01:51:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-02-22 01:51:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2021-02-22 01:51:27,005 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 188 [2021-02-22 01:51:27,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:27,006 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2021-02-22 01:51:27,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-22 01:51:27,006 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2021-02-22 01:51:27,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-02-22 01:51:27,009 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:27,009 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 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 01:51:27,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-22 01:51:27,010 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:27,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:27,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1886800624, now seen corresponding path program 19 times [2021-02-22 01:51:27,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:27,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848433354] [2021-02-22 01:51:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:27,013 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:27,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:27,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:27,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:27,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:27,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:27,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:27,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-02-22 01:51:28,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848433354] [2021-02-22 01:51:28,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:28,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-02-22 01:51:28,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814582798] [2021-02-22 01:51:28,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-22 01:51:28,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:28,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-22 01:51:28,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=390, Unknown=0, NotChecked=0, Total=650 [2021-02-22 01:51:28,148 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 26 states. [2021-02-22 01:51:29,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:29,430 INFO L93 Difference]: Finished difference Result 134 states and 135 transitions. [2021-02-22 01:51:29,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-22 01:51:29,430 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 197 [2021-02-22 01:51:29,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:29,432 INFO L225 Difference]: With dead ends: 134 [2021-02-22 01:51:29,432 INFO L226 Difference]: Without dead ends: 128 [2021-02-22 01:51:29,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=769, Invalid=1487, Unknown=0, NotChecked=0, Total=2256 [2021-02-22 01:51:29,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-02-22 01:51:29,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-02-22 01:51:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-02-22 01:51:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2021-02-22 01:51:29,451 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 197 [2021-02-22 01:51:29,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:29,452 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2021-02-22 01:51:29,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-22 01:51:29,452 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2021-02-22 01:51:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-02-22 01:51:29,453 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:29,454 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 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 01:51:29,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-22 01:51:29,454 INFO L428 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:29,455 INFO L82 PathProgramCache]: Analyzing trace with hash -346236094, now seen corresponding path program 20 times [2021-02-22 01:51:29,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:29,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224009447] [2021-02-22 01:51:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:29,458 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:29,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:29,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:29,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:29,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:29,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:29,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:29,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:29,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:29,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:29,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:29,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:29,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:29,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:29,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:29,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:30,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:30,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:30,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:30,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:30,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:30,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:30,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:30,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:30,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:30,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:30,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:30,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:30,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:30,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:30,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2021-02-22 01:51:30,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224009447] [2021-02-22 01:51:30,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:30,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-02-22 01:51:30,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913409763] [2021-02-22 01:51:30,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-22 01:51:30,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:30,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-22 01:51:30,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=419, Unknown=0, NotChecked=0, Total=702 [2021-02-22 01:51:30,680 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand 27 states. [2021-02-22 01:51:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:31,930 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2021-02-22 01:51:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-22 01:51:31,931 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 206 [2021-02-22 01:51:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:31,932 INFO L225 Difference]: With dead ends: 139 [2021-02-22 01:51:31,933 INFO L226 Difference]: Without dead ends: 133 [2021-02-22 01:51:31,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=838, Invalid=1612, Unknown=0, NotChecked=0, Total=2450 [2021-02-22 01:51:31,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-02-22 01:51:31,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-02-22 01:51:31,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-02-22 01:51:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2021-02-22 01:51:31,950 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 206 [2021-02-22 01:51:31,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:31,951 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2021-02-22 01:51:31,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-22 01:51:31,951 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2021-02-22 01:51:31,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-02-22 01:51:31,952 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:31,953 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 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 01:51:31,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-22 01:51:31,953 INFO L428 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:31,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:31,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1171636504, now seen corresponding path program 21 times [2021-02-22 01:51:31,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:31,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965107524] [2021-02-22 01:51:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:31,956 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:32,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:32,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:32,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:32,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:32,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:32,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:33,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:33,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:33,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:33,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:33,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:33,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:33,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:33,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:33,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:33,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:33,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-02-22 01:51:33,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965107524] [2021-02-22 01:51:33,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:33,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-02-22 01:51:33,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172446571] [2021-02-22 01:51:33,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-22 01:51:33,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:33,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-22 01:51:33,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756 [2021-02-22 01:51:33,487 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 28 states. [2021-02-22 01:51:34,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:34,885 INFO L93 Difference]: Finished difference Result 144 states and 145 transitions. [2021-02-22 01:51:34,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-22 01:51:34,888 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 215 [2021-02-22 01:51:34,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:34,893 INFO L225 Difference]: With dead ends: 144 [2021-02-22 01:51:34,894 INFO L226 Difference]: Without dead ends: 138 [2021-02-22 01:51:34,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=910, Invalid=1742, Unknown=0, NotChecked=0, Total=2652 [2021-02-22 01:51:34,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-02-22 01:51:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-02-22 01:51:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2021-02-22 01:51:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2021-02-22 01:51:34,927 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 215 [2021-02-22 01:51:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:34,928 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2021-02-22 01:51:34,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-22 01:51:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2021-02-22 01:51:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-02-22 01:51:34,929 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:34,929 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 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 01:51:34,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-22 01:51:34,929 INFO L428 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:34,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:34,930 INFO L82 PathProgramCache]: Analyzing trace with hash -532287158, now seen corresponding path program 22 times [2021-02-22 01:51:34,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:34,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854911793] [2021-02-22 01:51:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:34,932 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:34,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:34,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:34,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:34,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:34,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:34,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:35,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:35,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:35,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:35,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:35,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:36,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:36,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:36,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:36,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:36,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:36,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:36,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:36,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:36,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:36,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:36,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:36,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:36,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:36,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:36,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:36,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:36,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:36,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:36,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:36,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:36,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:36,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:36,774 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-02-22 01:51:36,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854911793] [2021-02-22 01:51:36,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:36,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-02-22 01:51:36,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119917962] [2021-02-22 01:51:36,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-22 01:51:36,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:36,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-22 01:51:36,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=480, Unknown=0, NotChecked=0, Total=812 [2021-02-22 01:51:36,779 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 29 states. [2021-02-22 01:51:38,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:38,235 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2021-02-22 01:51:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-22 01:51:38,235 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 224 [2021-02-22 01:51:38,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:38,237 INFO L225 Difference]: With dead ends: 149 [2021-02-22 01:51:38,237 INFO L226 Difference]: Without dead ends: 143 [2021-02-22 01:51:38,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=985, Invalid=1877, Unknown=0, NotChecked=0, Total=2862 [2021-02-22 01:51:38,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-02-22 01:51:38,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-02-22 01:51:38,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-02-22 01:51:38,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2021-02-22 01:51:38,256 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 224 [2021-02-22 01:51:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:38,256 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2021-02-22 01:51:38,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-02-22 01:51:38,257 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2021-02-22 01:51:38,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-02-22 01:51:38,258 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:38,258 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 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 01:51:38,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-22 01:51:38,259 INFO L428 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:38,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:38,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1401110240, now seen corresponding path program 23 times [2021-02-22 01:51:38,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:38,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955592494] [2021-02-22 01:51:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:38,262 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:38,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:38,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:38,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:38,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:38,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:38,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:39,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:39,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:39,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:39,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:39,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:39,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:39,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:39,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:39,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:39,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:39,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:39,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:39,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:39,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2021-02-22 01:51:39,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955592494] [2021-02-22 01:51:39,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:39,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-02-22 01:51:39,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778611644] [2021-02-22 01:51:39,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-22 01:51:39,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:39,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-22 01:51:39,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=512, Unknown=0, NotChecked=0, Total=870 [2021-02-22 01:51:39,982 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 30 states. [2021-02-22 01:51:41,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:41,506 INFO L93 Difference]: Finished difference Result 154 states and 155 transitions. [2021-02-22 01:51:41,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-22 01:51:41,506 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 233 [2021-02-22 01:51:41,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:41,509 INFO L225 Difference]: With dead ends: 154 [2021-02-22 01:51:41,509 INFO L226 Difference]: Without dead ends: 148 [2021-02-22 01:51:41,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1063, Invalid=2017, Unknown=0, NotChecked=0, Total=3080 [2021-02-22 01:51:41,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-02-22 01:51:41,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-02-22 01:51:41,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-02-22 01:51:41,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2021-02-22 01:51:41,528 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 233 [2021-02-22 01:51:41,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:41,529 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2021-02-22 01:51:41,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-02-22 01:51:41,529 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2021-02-22 01:51:41,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-02-22 01:51:41,531 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:41,531 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 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 01:51:41,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-02-22 01:51:41,531 INFO L428 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:41,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:41,532 INFO L82 PathProgramCache]: Analyzing trace with hash 238795602, now seen corresponding path program 24 times [2021-02-22 01:51:41,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:41,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871699425] [2021-02-22 01:51:41,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:41,535 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:41,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:41,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:41,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:41,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:41,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:41,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:51:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:41,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:41,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:41,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:41,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:41,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:41,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:41,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:41,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:41,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:41,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:41,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:41,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:41,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:41,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:41,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:51:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:42,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:42,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:51:42,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:42,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1176 trivial. 0 not checked. [2021-02-22 01:51:43,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871699425] [2021-02-22 01:51:43,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:43,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-02-22 01:51:43,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75971551] [2021-02-22 01:51:43,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-22 01:51:43,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:43,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-22 01:51:43,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=545, Unknown=0, NotChecked=0, Total=930 [2021-02-22 01:51:43,517 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 31 states. [2021-02-22 01:51:45,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:51:45,118 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2021-02-22 01:51:45,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-22 01:51:45,119 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 242 [2021-02-22 01:51:45,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:51:45,122 INFO L225 Difference]: With dead ends: 159 [2021-02-22 01:51:45,122 INFO L226 Difference]: Without dead ends: 153 [2021-02-22 01:51:45,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1144, Invalid=2162, Unknown=0, NotChecked=0, Total=3306 [2021-02-22 01:51:45,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-02-22 01:51:45,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-02-22 01:51:45,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-02-22 01:51:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2021-02-22 01:51:45,142 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 242 [2021-02-22 01:51:45,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:51:45,143 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2021-02-22 01:51:45,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-02-22 01:51:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2021-02-22 01:51:45,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-02-22 01:51:45,145 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:45,145 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 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 01:51:45,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-02-22 01:51:45,145 INFO L428 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:45,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:45,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1480733992, now seen corresponding path program 25 times [2021-02-22 01:51:45,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:45,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190176658] [2021-02-22 01:51:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:45,149 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:51:45,192 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:51:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:51:45,269 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:51:45,365 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:51:45,365 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:51:45,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-02-22 01:51:45,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:51:45 BoogieIcfgContainer [2021-02-22 01:51:45,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:51:45,412 INFO L168 Benchmark]: Toolchain (without parser) took 45066.10 ms. Allocated memory was 156.2 MB in the beginning and 789.6 MB in the end (delta: 633.3 MB). Free memory was 133.0 MB in the beginning and 751.3 MB in the end (delta: -618.3 MB). Peak memory consumption was 469.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:51:45,412 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:51:45,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.49 ms. Allocated memory is still 156.2 MB. Free memory was 131.7 MB in the beginning and 122.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:51:45,412 INFO L168 Benchmark]: Boogie Preprocessor took 41.08 ms. Allocated memory is still 156.2 MB. Free memory was 122.7 MB in the beginning and 121.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:51:45,412 INFO L168 Benchmark]: RCFGBuilder took 633.88 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 138.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:51:45,413 INFO L168 Benchmark]: TraceAbstraction took 44117.81 ms. Allocated memory was 156.2 MB in the beginning and 789.6 MB in the end (delta: 633.3 MB). Free memory was 138.0 MB in the beginning and 751.3 MB in the end (delta: -613.3 MB). Peak memory consumption was 474.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:51:45,413 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.49 ms. Allocated memory is still 156.2 MB. Free memory was 131.7 MB in the beginning and 122.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.08 ms. Allocated memory is still 156.2 MB. Free memory was 122.7 MB in the beginning and 121.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 633.88 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 138.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 44117.81 ms. Allocated memory was 156.2 MB in the beginning and 789.6 MB in the end (delta: 633.3 MB). Free memory was 138.0 MB in the beginning and 751.3 MB in the end (delta: -613.3 MB). Peak memory consumption was 474.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] int a = 25; [L15] int b = 0; [L16] CALL, EXPR sum(a, b) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND TRUE n <= 0 [L7] return m + n; [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L16] RET, EXPR sum(a, b) [L16] int result = sum(a, b); [L17] COND TRUE result == a + b [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 43.9s, OverallIterations: 26, TraceHistogramMax: 26, AutomataDifference: 21.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 653 SDtfs, 3216 SDslu, 1631 SDs, 0 SdLazy, 3590 SolverSat, 904 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1500 GetRequests, 700 SyntacticMatches, 0 SemanticMatches, 800 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6200 ImplicationChecksByTransitivity, 19.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=153occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 25 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, 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 incorrect! Received shutdown request...