/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:57:01,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:57:01,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:57:01,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 22:57:01,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 22:57:01,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 22:57:01,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 22:57:01,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 22:57:01,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 22:57:01,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 22:57:01,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 22:57:01,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 22:57:01,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:57:01,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:57:01,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:57:01,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:57:01,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:57:01,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:57:01,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:57:01,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:57:01,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:57:01,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:57:01,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:57:01,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:57:01,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 22:57:01,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 22:57:01,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 22:57:01,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 22:57:01,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 22:57:01,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 22:57:01,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 22:57:01,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 22:57:01,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 22:57:01,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 22:57:01,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 22:57:01,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 22:57:01,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 22:57:01,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 22:57:01,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 22:57:01,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 22:57:01,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 22:57:01,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 22:57:01,436 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:57:01,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:57:01,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:57:01,439 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:57:01,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:57:01,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:57:01,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:57:01,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:57:01,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:57:01,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:57:01,441 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:57:01,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:57:01,441 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:57:01,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:57:01,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:57:01,442 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:57:01,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:57:01,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:57:01,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:57:01,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:57:01,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:57:01,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:57:01,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:57:01,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:57:01,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:57:01,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:57:01,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:57:01,858 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:57:01,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2021-02-23 22:57:01,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee530868/8aaa10ba9e424493abafe147da9799bb/FLAGb23f3ece4 [2021-02-23 22:57:02,596 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:57:02,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2021-02-23 22:57:02,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee530868/8aaa10ba9e424493abafe147da9799bb/FLAGb23f3ece4 [2021-02-23 22:57:02,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee530868/8aaa10ba9e424493abafe147da9799bb [2021-02-23 22:57:02,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:57:02,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:57:02,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:57:02,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:57:03,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:57:03,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:57:02" (1/1) ... [2021-02-23 22:57:03,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd72f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:03, skipping insertion in model container [2021-02-23 22:57:03,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:57:02" (1/1) ... [2021-02-23 22:57:03,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:57:03,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:57:03,279 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/id_i25_o25-2.c[454,467] [2021-02-23 22:57:03,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:57:03,299 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:57:03,319 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/id_i25_o25-2.c[454,467] [2021-02-23 22:57:03,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:57:03,339 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:57:03,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:03 WrapperNode [2021-02-23 22:57:03,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:57:03,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:57:03,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:57:03,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:57:03,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:03" (1/1) ... [2021-02-23 22:57:03,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:03" (1/1) ... [2021-02-23 22:57:03,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:03" (1/1) ... [2021-02-23 22:57:03,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:03" (1/1) ... [2021-02-23 22:57:03,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:03" (1/1) ... [2021-02-23 22:57:03,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:03" (1/1) ... [2021-02-23 22:57:03,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:03" (1/1) ... [2021-02-23 22:57:03,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:57:03,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:57:03,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:57:03,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:57:03,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:57:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:57:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:57:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:57:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-02-23 22:57:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:57:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 22:57:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:57:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:57:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:57:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:57:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-02-23 22:57:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:57:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:57:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:57:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:57:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:57:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:57:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:57:03,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:57:03,832 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 22:57:03,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:57:03 BoogieIcfgContainer [2021-02-23 22:57:03,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:57:03,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:57:03,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:57:03,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:57:03,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:57:02" (1/3) ... [2021-02-23 22:57:03,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@993e708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:57:03, skipping insertion in model container [2021-02-23 22:57:03,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:03" (2/3) ... [2021-02-23 22:57:03,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@993e708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:57:03, skipping insertion in model container [2021-02-23 22:57:03,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:57:03" (3/3) ... [2021-02-23 22:57:03,845 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i25_o25-2.c [2021-02-23 22:57:03,852 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:57:03,857 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:57:03,878 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:57:03,906 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:57:03,906 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:57:03,907 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:57:03,907 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:57:03,907 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:57:03,908 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:57:03,908 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:57:03,908 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:57:03,927 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-23 22:57:03,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 22:57:03,939 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:03,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:57:03,941 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:03,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:03,949 INFO L82 PathProgramCache]: Analyzing trace with hash -777358502, now seen corresponding path program 1 times [2021-02-23 22:57:03,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:03,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867885624] [2021-02-23 22:57:03,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:04,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:04,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:04,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:04,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:04,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:04,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:57:04,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867885624] [2021-02-23 22:57:04,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:57:04,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:57:04,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517354844] [2021-02-23 22:57:04,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:57:04,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:04,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:57:04,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:57:04,533 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2021-02-23 22:57:04,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:04,948 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-02-23 22:57:04,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 22:57:04,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-23 22:57:04,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:04,966 INFO L225 Difference]: With dead ends: 48 [2021-02-23 22:57:04,966 INFO L226 Difference]: Without dead ends: 31 [2021-02-23 22:57:04,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:57:04,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-23 22:57:05,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-02-23 22:57:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-23 22:57:05,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-02-23 22:57:05,033 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2021-02-23 22:57:05,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:05,034 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-02-23 22:57:05,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:57:05,034 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-02-23 22:57:05,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-23 22:57:05,036 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:05,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:57:05,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:57:05,037 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:05,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:05,039 INFO L82 PathProgramCache]: Analyzing trace with hash 814440848, now seen corresponding path program 1 times [2021-02-23 22:57:05,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:05,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46274445] [2021-02-23 22:57:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:05,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:05,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:05,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:05,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:05,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:05,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:05,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:05,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:05,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:05,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:05,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:05,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 22:57:05,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46274445] [2021-02-23 22:57:05,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:05,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-23 22:57:05,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453517928] [2021-02-23 22:57:05,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 22:57:05,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:05,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 22:57:05,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 22:57:05,264 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2021-02-23 22:57:05,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:05,681 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-02-23 22:57:05,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 22:57:05,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-02-23 22:57:05,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:05,686 INFO L225 Difference]: With dead ends: 42 [2021-02-23 22:57:05,686 INFO L226 Difference]: Without dead ends: 36 [2021-02-23 22:57:05,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-23 22:57:05,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-23 22:57:05,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-23 22:57:05,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-23 22:57:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-02-23 22:57:05,729 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2021-02-23 22:57:05,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:05,730 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-02-23 22:57:05,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 22:57:05,730 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-02-23 22:57:05,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 22:57:05,731 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:05,734 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:57:05,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:57:05,735 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:05,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:05,735 INFO L82 PathProgramCache]: Analyzing trace with hash -545888486, now seen corresponding path program 2 times [2021-02-23 22:57:05,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:05,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201710551] [2021-02-23 22:57:05,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:05,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:05,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:05,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:05,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:05,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:05,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:05,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:05,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:05,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:05,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:05,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:05,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:05,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:05,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:05,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-23 22:57:05,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201710551] [2021-02-23 22:57:05,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:05,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-23 22:57:05,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408749452] [2021-02-23 22:57:05,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 22:57:05,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:05,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 22:57:05,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 22:57:05,996 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2021-02-23 22:57:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:06,292 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-02-23 22:57:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 22:57:06,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2021-02-23 22:57:06,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:06,295 INFO L225 Difference]: With dead ends: 47 [2021-02-23 22:57:06,295 INFO L226 Difference]: Without dead ends: 41 [2021-02-23 22:57:06,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-02-23 22:57:06,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-23 22:57:06,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-23 22:57:06,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-23 22:57:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-02-23 22:57:06,310 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 40 [2021-02-23 22:57:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:06,310 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-02-23 22:57:06,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 22:57:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-02-23 22:57:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-23 22:57:06,312 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:06,313 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:57:06,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 22:57:06,313 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:06,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:06,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1925368272, now seen corresponding path program 3 times [2021-02-23 22:57:06,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:06,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532777693] [2021-02-23 22:57:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:06,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:06,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:06,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-02-23 22:57:06,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532777693] [2021-02-23 22:57:06,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:06,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-23 22:57:06,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836442941] [2021-02-23 22:57:06,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 22:57:06,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:06,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 22:57:06,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-23 22:57:06,550 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 9 states. [2021-02-23 22:57:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:06,850 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-02-23 22:57:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 22:57:06,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2021-02-23 22:57:06,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:06,853 INFO L225 Difference]: With dead ends: 52 [2021-02-23 22:57:06,853 INFO L226 Difference]: Without dead ends: 46 [2021-02-23 22:57:06,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-02-23 22:57:06,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-23 22:57:06,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-02-23 22:57:06,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-02-23 22:57:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-02-23 22:57:06,871 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 48 [2021-02-23 22:57:06,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:06,871 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-02-23 22:57:06,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 22:57:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-02-23 22:57:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 22:57:06,874 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:06,874 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:06,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 22:57:06,874 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:06,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:06,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1702046426, now seen corresponding path program 4 times [2021-02-23 22:57:06,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:06,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453366143] [2021-02-23 22:57:06,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:06,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:06,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:06,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:06,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:06,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:06,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:07,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:07,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:07,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-02-23 22:57:07,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453366143] [2021-02-23 22:57:07,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:07,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-23 22:57:07,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207658213] [2021-02-23 22:57:07,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 22:57:07,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:07,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 22:57:07,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:57:07,075 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 10 states. [2021-02-23 22:57:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:07,417 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2021-02-23 22:57:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 22:57:07,417 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2021-02-23 22:57:07,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:07,419 INFO L225 Difference]: With dead ends: 57 [2021-02-23 22:57:07,419 INFO L226 Difference]: Without dead ends: 51 [2021-02-23 22:57:07,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-02-23 22:57:07,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-23 22:57:07,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-23 22:57:07,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-23 22:57:07,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-02-23 22:57:07,435 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 56 [2021-02-23 22:57:07,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:07,436 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-02-23 22:57:07,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 22:57:07,436 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-02-23 22:57:07,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-23 22:57:07,437 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:07,437 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:07,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 22:57:07,438 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:07,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:07,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1874632176, now seen corresponding path program 5 times [2021-02-23 22:57:07,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:07,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333542443] [2021-02-23 22:57:07,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:07,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:07,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:07,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:07,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:07,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:07,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:07,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:07,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:07,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:07,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:07,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:07,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-23 22:57:07,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333542443] [2021-02-23 22:57:07,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:07,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 22:57:07,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597040836] [2021-02-23 22:57:07,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 22:57:07,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:07,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 22:57:07,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-23 22:57:07,667 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 11 states. [2021-02-23 22:57:08,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:08,049 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-02-23 22:57:08,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 22:57:08,049 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2021-02-23 22:57:08,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:08,051 INFO L225 Difference]: With dead ends: 62 [2021-02-23 22:57:08,051 INFO L226 Difference]: Without dead ends: 56 [2021-02-23 22:57:08,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-02-23 22:57:08,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-02-23 22:57:08,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-02-23 22:57:08,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-23 22:57:08,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-02-23 22:57:08,070 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 64 [2021-02-23 22:57:08,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:08,070 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-02-23 22:57:08,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 22:57:08,071 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-02-23 22:57:08,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-23 22:57:08,072 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:08,072 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:08,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 22:57:08,073 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:08,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1809628826, now seen corresponding path program 6 times [2021-02-23 22:57:08,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:08,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392552377] [2021-02-23 22:57:08,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:08,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:08,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:08,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-02-23 22:57:08,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392552377] [2021-02-23 22:57:08,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:08,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-23 22:57:08,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253417150] [2021-02-23 22:57:08,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 22:57:08,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:08,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 22:57:08,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-02-23 22:57:08,342 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 12 states. [2021-02-23 22:57:08,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:08,780 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-02-23 22:57:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 22:57:08,781 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2021-02-23 22:57:08,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:08,783 INFO L225 Difference]: With dead ends: 67 [2021-02-23 22:57:08,783 INFO L226 Difference]: Without dead ends: 61 [2021-02-23 22:57:08,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2021-02-23 22:57:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-23 22:57:08,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-23 22:57:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-23 22:57:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-02-23 22:57:08,802 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 72 [2021-02-23 22:57:08,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:08,803 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-02-23 22:57:08,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 22:57:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-02-23 22:57:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-23 22:57:08,804 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:08,805 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:08,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 22:57:08,805 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:08,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:08,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1448159824, now seen corresponding path program 7 times [2021-02-23 22:57:08,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:08,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247059195] [2021-02-23 22:57:08,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:08,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:08,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:08,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:08,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:08,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:08,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-02-23 22:57:09,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247059195] [2021-02-23 22:57:09,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:09,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-23 22:57:09,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969122137] [2021-02-23 22:57:09,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 22:57:09,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:09,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 22:57:09,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-02-23 22:57:09,227 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 13 states. [2021-02-23 22:57:09,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:09,646 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2021-02-23 22:57:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 22:57:09,646 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2021-02-23 22:57:09,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:09,648 INFO L225 Difference]: With dead ends: 72 [2021-02-23 22:57:09,648 INFO L226 Difference]: Without dead ends: 66 [2021-02-23 22:57:09,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-02-23 22:57:09,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-02-23 22:57:09,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-02-23 22:57:09,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-23 22:57:09,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-02-23 22:57:09,675 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 80 [2021-02-23 22:57:09,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:09,677 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-02-23 22:57:09,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 22:57:09,677 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-02-23 22:57:09,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-23 22:57:09,680 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:09,680 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:09,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 22:57:09,680 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:09,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:09,681 INFO L82 PathProgramCache]: Analyzing trace with hash -537976230, now seen corresponding path program 8 times [2021-02-23 22:57:09,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:09,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889354322] [2021-02-23 22:57:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:09,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:09,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:09,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:09,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:09,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:09,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-02-23 22:57:10,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889354322] [2021-02-23 22:57:10,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:10,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-02-23 22:57:10,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853223837] [2021-02-23 22:57:10,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 22:57:10,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:10,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 22:57:10,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-02-23 22:57:10,109 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 14 states. [2021-02-23 22:57:10,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:10,563 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2021-02-23 22:57:10,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 22:57:10,564 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2021-02-23 22:57:10,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:10,565 INFO L225 Difference]: With dead ends: 77 [2021-02-23 22:57:10,565 INFO L226 Difference]: Without dead ends: 71 [2021-02-23 22:57:10,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-02-23 22:57:10,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-02-23 22:57:10,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-02-23 22:57:10,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-23 22:57:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-02-23 22:57:10,581 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 88 [2021-02-23 22:57:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:10,582 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-02-23 22:57:10,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 22:57:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-02-23 22:57:10,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-02-23 22:57:10,583 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:10,584 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:10,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 22:57:10,584 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:10,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:10,585 INFO L82 PathProgramCache]: Analyzing trace with hash -852483440, now seen corresponding path program 9 times [2021-02-23 22:57:10,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:10,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174574873] [2021-02-23 22:57:10,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:10,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:10,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:10,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:10,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:10,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-02-23 22:57:10,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174574873] [2021-02-23 22:57:10,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:10,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-23 22:57:10,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752209696] [2021-02-23 22:57:10,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 22:57:10,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:10,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 22:57:10,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-02-23 22:57:10,965 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 15 states. [2021-02-23 22:57:11,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:11,496 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2021-02-23 22:57:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 22:57:11,497 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 96 [2021-02-23 22:57:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:11,499 INFO L225 Difference]: With dead ends: 82 [2021-02-23 22:57:11,499 INFO L226 Difference]: Without dead ends: 76 [2021-02-23 22:57:11,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2021-02-23 22:57:11,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-23 22:57:11,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-02-23 22:57:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-23 22:57:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2021-02-23 22:57:11,518 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 96 [2021-02-23 22:57:11,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:11,519 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2021-02-23 22:57:11,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 22:57:11,519 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2021-02-23 22:57:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-02-23 22:57:11,521 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:11,521 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:11,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 22:57:11,521 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:11,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:11,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1407604250, now seen corresponding path program 10 times [2021-02-23 22:57:11,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:11,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274528664] [2021-02-23 22:57:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:11,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:11,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:11,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:11,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:11,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:11,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:11,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:11,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:11,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:11,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:11,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:11,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:11,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:11,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:11,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:11,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:11,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:11,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-02-23 22:57:12,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274528664] [2021-02-23 22:57:12,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:12,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-02-23 22:57:12,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070095238] [2021-02-23 22:57:12,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 22:57:12,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:12,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 22:57:12,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-02-23 22:57:12,023 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 16 states. [2021-02-23 22:57:12,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:12,640 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2021-02-23 22:57:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 22:57:12,641 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2021-02-23 22:57:12,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:12,642 INFO L225 Difference]: With dead ends: 87 [2021-02-23 22:57:12,643 INFO L226 Difference]: Without dead ends: 81 [2021-02-23 22:57:12,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=268, Invalid=544, Unknown=0, NotChecked=0, Total=812 [2021-02-23 22:57:12,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-23 22:57:12,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-02-23 22:57:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-23 22:57:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-02-23 22:57:12,673 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 104 [2021-02-23 22:57:12,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:12,673 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-02-23 22:57:12,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 22:57:12,674 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-02-23 22:57:12,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-02-23 22:57:12,675 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:12,675 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:12,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 22:57:12,676 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:12,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:12,677 INFO L82 PathProgramCache]: Analyzing trace with hash 2015644368, now seen corresponding path program 11 times [2021-02-23 22:57:12,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:12,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846568970] [2021-02-23 22:57:12,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:12,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:12,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:12,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:12,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:12,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:13,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:13,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:13,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:13,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:13,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:13,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:13,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-02-23 22:57:13,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846568970] [2021-02-23 22:57:13,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:13,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-02-23 22:57:13,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315636063] [2021-02-23 22:57:13,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 22:57:13,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:13,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 22:57:13,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2021-02-23 22:57:13,277 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 17 states. [2021-02-23 22:57:13,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:13,910 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2021-02-23 22:57:13,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 22:57:13,911 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2021-02-23 22:57:13,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:13,912 INFO L225 Difference]: With dead ends: 92 [2021-02-23 22:57:13,912 INFO L226 Difference]: Without dead ends: 86 [2021-02-23 22:57:13,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=309, Invalid=621, Unknown=0, NotChecked=0, Total=930 [2021-02-23 22:57:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-23 22:57:13,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-02-23 22:57:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-23 22:57:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2021-02-23 22:57:13,930 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 112 [2021-02-23 22:57:13,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:13,930 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2021-02-23 22:57:13,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 22:57:13,931 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2021-02-23 22:57:13,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-02-23 22:57:13,932 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:13,932 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:13,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 22:57:13,933 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:13,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:13,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1090627110, now seen corresponding path program 12 times [2021-02-23 22:57:13,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:13,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851756893] [2021-02-23 22:57:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:13,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:13,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:13,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:13,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:13,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:14,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:14,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:14,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:14,478 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-02-23 22:57:14,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851756893] [2021-02-23 22:57:14,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:14,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-23 22:57:14,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478592068] [2021-02-23 22:57:14,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 22:57:14,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:14,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 22:57:14,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2021-02-23 22:57:14,482 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 18 states. [2021-02-23 22:57:15,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:15,219 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2021-02-23 22:57:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 22:57:15,219 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 120 [2021-02-23 22:57:15,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:15,221 INFO L225 Difference]: With dead ends: 97 [2021-02-23 22:57:15,221 INFO L226 Difference]: Without dead ends: 91 [2021-02-23 22:57:15,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=353, Invalid=703, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 22:57:15,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-23 22:57:15,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-02-23 22:57:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-23 22:57:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2021-02-23 22:57:15,237 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 120 [2021-02-23 22:57:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:15,237 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2021-02-23 22:57:15,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 22:57:15,238 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2021-02-23 22:57:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-02-23 22:57:15,239 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:15,239 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:15,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 22:57:15,240 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:15,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:15,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1787714800, now seen corresponding path program 13 times [2021-02-23 22:57:15,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:15,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020284371] [2021-02-23 22:57:15,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:15,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:15,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:15,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:15,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:15,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-02-23 22:57:15,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020284371] [2021-02-23 22:57:15,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:15,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-02-23 22:57:15,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498041773] [2021-02-23 22:57:15,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 22:57:15,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:15,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 22:57:15,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2021-02-23 22:57:15,920 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 19 states. [2021-02-23 22:57:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:16,624 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2021-02-23 22:57:16,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 22:57:16,624 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 128 [2021-02-23 22:57:16,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:16,626 INFO L225 Difference]: With dead ends: 102 [2021-02-23 22:57:16,626 INFO L226 Difference]: Without dead ends: 96 [2021-02-23 22:57:16,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=400, Invalid=790, Unknown=0, NotChecked=0, Total=1190 [2021-02-23 22:57:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-02-23 22:57:16,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-02-23 22:57:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-02-23 22:57:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2021-02-23 22:57:16,644 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 128 [2021-02-23 22:57:16,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:16,644 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2021-02-23 22:57:16,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 22:57:16,644 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2021-02-23 22:57:16,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-02-23 22:57:16,646 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:16,647 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:16,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 22:57:16,647 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:16,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:16,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1030958490, now seen corresponding path program 14 times [2021-02-23 22:57:16,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:16,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68283783] [2021-02-23 22:57:16,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:16,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:16,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:16,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:16,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:16,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:16,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:16,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:16,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:16,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:16,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:16,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:16,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:16,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:16,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:16,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:17,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:17,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-02-23 22:57:17,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68283783] [2021-02-23 22:57:17,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:17,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-02-23 22:57:17,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884147863] [2021-02-23 22:57:17,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 22:57:17,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:17,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 22:57:17,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2021-02-23 22:57:17,336 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 20 states. [2021-02-23 22:57:17,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:17,999 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2021-02-23 22:57:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 22:57:17,999 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 136 [2021-02-23 22:57:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:18,002 INFO L225 Difference]: With dead ends: 107 [2021-02-23 22:57:18,002 INFO L226 Difference]: Without dead ends: 101 [2021-02-23 22:57:18,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=450, Invalid=882, Unknown=0, NotChecked=0, Total=1332 [2021-02-23 22:57:18,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-02-23 22:57:18,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-02-23 22:57:18,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-02-23 22:57:18,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2021-02-23 22:57:18,028 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 136 [2021-02-23 22:57:18,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:18,029 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2021-02-23 22:57:18,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 22:57:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2021-02-23 22:57:18,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-02-23 22:57:18,031 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:18,031 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:18,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 22:57:18,031 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:18,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:18,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1583098704, now seen corresponding path program 15 times [2021-02-23 22:57:18,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:18,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185260196] [2021-02-23 22:57:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:18,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:18,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:18,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:18,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:18,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-02-23 22:57:18,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185260196] [2021-02-23 22:57:18,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:18,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-02-23 22:57:18,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23562492] [2021-02-23 22:57:18,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-23 22:57:18,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:18,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-23 22:57:18,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2021-02-23 22:57:18,915 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 21 states. [2021-02-23 22:57:19,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:19,648 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2021-02-23 22:57:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 22:57:19,649 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 144 [2021-02-23 22:57:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:19,654 INFO L225 Difference]: With dead ends: 112 [2021-02-23 22:57:19,654 INFO L226 Difference]: Without dead ends: 106 [2021-02-23 22:57:19,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=503, Invalid=979, Unknown=0, NotChecked=0, Total=1482 [2021-02-23 22:57:19,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-23 22:57:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-02-23 22:57:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-02-23 22:57:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2021-02-23 22:57:19,674 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 144 [2021-02-23 22:57:19,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:19,677 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2021-02-23 22:57:19,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-23 22:57:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2021-02-23 22:57:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-02-23 22:57:19,679 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:19,679 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:19,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 22:57:19,680 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:19,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:19,680 INFO L82 PathProgramCache]: Analyzing trace with hash -796864166, now seen corresponding path program 16 times [2021-02-23 22:57:19,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:19,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584993990] [2021-02-23 22:57:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:19,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:19,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:19,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:19,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:19,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:19,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:19,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:19,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:19,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:19,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:19,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:19,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:19,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:19,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:19,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:19,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:19,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:19,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:19,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:19,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:19,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:19,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:20,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:20,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-02-23 22:57:20,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584993990] [2021-02-23 22:57:20,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:20,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-02-23 22:57:20,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594196168] [2021-02-23 22:57:20,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 22:57:20,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:20,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 22:57:20,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2021-02-23 22:57:20,607 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 22 states. [2021-02-23 22:57:21,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:21,510 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2021-02-23 22:57:21,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 22:57:21,511 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 152 [2021-02-23 22:57:21,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:21,513 INFO L225 Difference]: With dead ends: 117 [2021-02-23 22:57:21,514 INFO L226 Difference]: Without dead ends: 111 [2021-02-23 22:57:21,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=559, Invalid=1081, Unknown=0, NotChecked=0, Total=1640 [2021-02-23 22:57:21,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-23 22:57:21,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-02-23 22:57:21,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-02-23 22:57:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2021-02-23 22:57:21,538 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 152 [2021-02-23 22:57:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:21,539 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2021-02-23 22:57:21,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 22:57:21,539 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2021-02-23 22:57:21,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-02-23 22:57:21,542 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:21,542 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:21,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 22:57:21,543 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:21,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:21,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1193796496, now seen corresponding path program 17 times [2021-02-23 22:57:21,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:21,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859429625] [2021-02-23 22:57:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:21,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:21,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:21,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:21,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:21,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:21,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:22,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:22,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:22,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:22,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:22,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:22,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:22,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:22,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:22,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:22,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:22,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-02-23 22:57:22,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859429625] [2021-02-23 22:57:22,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:22,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-02-23 22:57:22,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892497793] [2021-02-23 22:57:22,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-23 22:57:22,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:22,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-23 22:57:22,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=310, Unknown=0, NotChecked=0, Total=506 [2021-02-23 22:57:22,556 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 23 states. [2021-02-23 22:57:23,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:23,451 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2021-02-23 22:57:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 22:57:23,451 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 160 [2021-02-23 22:57:23,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:23,453 INFO L225 Difference]: With dead ends: 122 [2021-02-23 22:57:23,453 INFO L226 Difference]: Without dead ends: 116 [2021-02-23 22:57:23,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=618, Invalid=1188, Unknown=0, NotChecked=0, Total=1806 [2021-02-23 22:57:23,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-02-23 22:57:23,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-02-23 22:57:23,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-02-23 22:57:23,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2021-02-23 22:57:23,472 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 160 [2021-02-23 22:57:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:23,473 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2021-02-23 22:57:23,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-23 22:57:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2021-02-23 22:57:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-23 22:57:23,475 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:23,476 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:23,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 22:57:23,476 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:23,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:23,477 INFO L82 PathProgramCache]: Analyzing trace with hash 509822234, now seen corresponding path program 18 times [2021-02-23 22:57:23,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:23,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619450755] [2021-02-23 22:57:23,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:23,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:23,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:23,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:23,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:23,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:23,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:24,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:24,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-02-23 22:57:24,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619450755] [2021-02-23 22:57:24,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:24,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-02-23 22:57:24,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942833344] [2021-02-23 22:57:24,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-23 22:57:24,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:24,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-23 22:57:24,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=336, Unknown=0, NotChecked=0, Total=552 [2021-02-23 22:57:24,570 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand 24 states. [2021-02-23 22:57:25,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:25,548 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2021-02-23 22:57:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-23 22:57:25,548 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 168 [2021-02-23 22:57:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:25,551 INFO L225 Difference]: With dead ends: 127 [2021-02-23 22:57:25,551 INFO L226 Difference]: Without dead ends: 121 [2021-02-23 22:57:25,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=680, Invalid=1300, Unknown=0, NotChecked=0, Total=1980 [2021-02-23 22:57:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-02-23 22:57:25,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-02-23 22:57:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2021-02-23 22:57:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2021-02-23 22:57:25,572 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 168 [2021-02-23 22:57:25,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:25,573 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2021-02-23 22:57:25,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-23 22:57:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2021-02-23 22:57:25,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-23 22:57:25,576 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:25,576 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:25,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-23 22:57:25,577 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:25,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:25,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1058589648, now seen corresponding path program 19 times [2021-02-23 22:57:25,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:25,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010975800] [2021-02-23 22:57:25,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:25,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:25,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:25,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:25,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:25,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:25,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:25,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:25,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:25,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:25,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:25,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:25,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:25,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:25,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:25,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:25,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:25,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:25,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:25,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:25,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:25,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:25,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:25,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:25,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:25,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:26,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:26,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:26,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2021-02-23 22:57:26,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010975800] [2021-02-23 22:57:26,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:26,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-02-23 22:57:26,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700328843] [2021-02-23 22:57:26,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-23 22:57:26,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:26,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-23 22:57:26,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=363, Unknown=0, NotChecked=0, Total=600 [2021-02-23 22:57:26,746 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 25 states. [2021-02-23 22:57:27,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:27,740 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2021-02-23 22:57:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 22:57:27,741 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 176 [2021-02-23 22:57:27,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:27,743 INFO L225 Difference]: With dead ends: 132 [2021-02-23 22:57:27,743 INFO L226 Difference]: Without dead ends: 126 [2021-02-23 22:57:27,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=745, Invalid=1417, Unknown=0, NotChecked=0, Total=2162 [2021-02-23 22:57:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-02-23 22:57:27,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-02-23 22:57:27,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2021-02-23 22:57:27,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2021-02-23 22:57:27,763 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 176 [2021-02-23 22:57:27,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:27,764 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2021-02-23 22:57:27,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-23 22:57:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2021-02-23 22:57:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-02-23 22:57:27,767 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:27,767 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:27,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-23 22:57:27,767 INFO L428 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:27,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:27,768 INFO L82 PathProgramCache]: Analyzing trace with hash 844531930, now seen corresponding path program 20 times [2021-02-23 22:57:27,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:27,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406109566] [2021-02-23 22:57:27,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:27,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:27,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:27,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:28,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2021-02-23 22:57:29,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406109566] [2021-02-23 22:57:29,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:29,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-02-23 22:57:29,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941552852] [2021-02-23 22:57:29,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-23 22:57:29,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:29,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-23 22:57:29,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2021-02-23 22:57:29,225 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 26 states. [2021-02-23 22:57:30,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:30,313 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2021-02-23 22:57:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 22:57:30,314 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 184 [2021-02-23 22:57:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:30,315 INFO L225 Difference]: With dead ends: 137 [2021-02-23 22:57:30,316 INFO L226 Difference]: Without dead ends: 131 [2021-02-23 22:57:30,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=813, Invalid=1539, Unknown=0, NotChecked=0, Total=2352 [2021-02-23 22:57:30,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-02-23 22:57:30,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-02-23 22:57:30,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2021-02-23 22:57:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2021-02-23 22:57:30,337 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 184 [2021-02-23 22:57:30,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:30,337 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2021-02-23 22:57:30,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-23 22:57:30,337 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2021-02-23 22:57:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-02-23 22:57:30,341 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:30,341 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:30,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-23 22:57:30,341 INFO L428 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:30,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:30,342 INFO L82 PathProgramCache]: Analyzing trace with hash -260905968, now seen corresponding path program 21 times [2021-02-23 22:57:30,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:30,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611996895] [2021-02-23 22:57:30,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:30,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2021-02-23 22:57:31,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611996895] [2021-02-23 22:57:31,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:31,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-02-23 22:57:31,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782684711] [2021-02-23 22:57:31,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-23 22:57:31,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:31,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-23 22:57:31,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=420, Unknown=0, NotChecked=0, Total=702 [2021-02-23 22:57:31,535 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 27 states. [2021-02-23 22:57:32,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:32,630 INFO L93 Difference]: Finished difference Result 142 states and 143 transitions. [2021-02-23 22:57:32,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-23 22:57:32,633 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 192 [2021-02-23 22:57:32,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:32,634 INFO L225 Difference]: With dead ends: 142 [2021-02-23 22:57:32,635 INFO L226 Difference]: Without dead ends: 136 [2021-02-23 22:57:32,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=884, Invalid=1666, Unknown=0, NotChecked=0, Total=2550 [2021-02-23 22:57:32,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-02-23 22:57:32,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-02-23 22:57:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2021-02-23 22:57:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2021-02-23 22:57:32,654 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 192 [2021-02-23 22:57:32,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:32,654 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2021-02-23 22:57:32,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-23 22:57:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2021-02-23 22:57:32,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-23 22:57:32,657 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:32,658 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:32,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-23 22:57:32,658 INFO L428 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:32,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:32,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1016503450, now seen corresponding path program 22 times [2021-02-23 22:57:32,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:32,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681110972] [2021-02-23 22:57:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:32,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:32,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:32,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:32,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:32,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:32,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:32,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:32,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:32,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:32,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2021-02-23 22:57:33,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681110972] [2021-02-23 22:57:33,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:33,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-02-23 22:57:33,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560773793] [2021-02-23 22:57:33,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-23 22:57:33,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:33,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-23 22:57:33,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2021-02-23 22:57:33,929 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 28 states. [2021-02-23 22:57:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:35,130 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2021-02-23 22:57:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 22:57:35,130 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 200 [2021-02-23 22:57:35,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:35,132 INFO L225 Difference]: With dead ends: 147 [2021-02-23 22:57:35,132 INFO L226 Difference]: Without dead ends: 141 [2021-02-23 22:57:35,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=958, Invalid=1798, Unknown=0, NotChecked=0, Total=2756 [2021-02-23 22:57:35,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-02-23 22:57:35,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-02-23 22:57:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-02-23 22:57:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2021-02-23 22:57:35,153 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 200 [2021-02-23 22:57:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:35,153 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2021-02-23 22:57:35,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-23 22:57:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2021-02-23 22:57:35,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-02-23 22:57:35,156 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:35,156 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:35,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-23 22:57:35,157 INFO L428 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:35,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:35,158 INFO L82 PathProgramCache]: Analyzing trace with hash 8006736, now seen corresponding path program 23 times [2021-02-23 22:57:35,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:35,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554119509] [2021-02-23 22:57:35,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:35,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:35,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:35,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:35,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:35,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:35,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2021-02-23 22:57:36,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554119509] [2021-02-23 22:57:36,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:36,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-02-23 22:57:36,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031639787] [2021-02-23 22:57:36,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-23 22:57:36,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:36,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-23 22:57:36,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=481, Unknown=0, NotChecked=0, Total=812 [2021-02-23 22:57:36,601 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 29 states. [2021-02-23 22:57:37,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:37,853 INFO L93 Difference]: Finished difference Result 152 states and 153 transitions. [2021-02-23 22:57:37,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-23 22:57:37,854 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 208 [2021-02-23 22:57:37,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:37,856 INFO L225 Difference]: With dead ends: 152 [2021-02-23 22:57:37,856 INFO L226 Difference]: Without dead ends: 146 [2021-02-23 22:57:37,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1935, Unknown=0, NotChecked=0, Total=2970 [2021-02-23 22:57:37,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-02-23 22:57:37,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-02-23 22:57:37,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-02-23 22:57:37,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2021-02-23 22:57:37,877 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 208 [2021-02-23 22:57:37,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:37,878 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2021-02-23 22:57:37,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-02-23 22:57:37,878 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2021-02-23 22:57:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-02-23 22:57:37,880 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:37,880 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:37,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-02-23 22:57:37,880 INFO L428 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:37,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:37,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1381990490, now seen corresponding path program 24 times [2021-02-23 22:57:37,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:37,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310404152] [2021-02-23 22:57:37,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:37,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:37,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:37,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:37,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:37,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:37,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:37,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:37,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:37,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:37,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:57:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:38,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2021-02-23 22:57:39,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310404152] [2021-02-23 22:57:39,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:39,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-02-23 22:57:39,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640308733] [2021-02-23 22:57:39,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-23 22:57:39,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:39,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-23 22:57:39,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=513, Unknown=0, NotChecked=0, Total=870 [2021-02-23 22:57:39,327 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 30 states. [2021-02-23 22:57:40,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:40,632 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2021-02-23 22:57:40,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-23 22:57:40,633 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 216 [2021-02-23 22:57:40,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:40,635 INFO L225 Difference]: With dead ends: 157 [2021-02-23 22:57:40,635 INFO L226 Difference]: Without dead ends: 151 [2021-02-23 22:57:40,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1115, Invalid=2077, Unknown=0, NotChecked=0, Total=3192 [2021-02-23 22:57:40,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-02-23 22:57:40,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-02-23 22:57:40,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-02-23 22:57:40,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2021-02-23 22:57:40,658 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 216 [2021-02-23 22:57:40,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:40,659 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2021-02-23 22:57:40,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-02-23 22:57:40,659 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2021-02-23 22:57:40,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-02-23 22:57:40,661 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:40,661 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:57:40,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-02-23 22:57:40,662 INFO L428 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:40,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:40,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1332913296, now seen corresponding path program 25 times [2021-02-23 22:57:40,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:40,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710626922] [2021-02-23 22:57:40,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:57:40,701 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:57:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:57:40,765 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:57:40,882 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:57:40,882 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:57:40,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-02-23 22:57:40,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:57:40 BoogieIcfgContainer [2021-02-23 22:57:40,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:57:40,991 INFO L168 Benchmark]: Toolchain (without parser) took 38013.58 ms. Allocated memory was 159.4 MB in the beginning and 791.7 MB in the end (delta: 632.3 MB). Free memory was 135.7 MB in the beginning and 625.0 MB in the end (delta: -489.3 MB). Peak memory consumption was 144.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:57:40,991 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 159.4 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:57:40,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.22 ms. Allocated memory is still 159.4 MB. Free memory was 134.7 MB in the beginning and 125.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:57:40,991 INFO L168 Benchmark]: Boogie Preprocessor took 70.11 ms. Allocated memory is still 159.4 MB. Free memory was 125.3 MB in the beginning and 124.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:57:40,992 INFO L168 Benchmark]: RCFGBuilder took 421.33 ms. Allocated memory is still 159.4 MB. Free memory was 124.2 MB in the beginning and 110.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 22:57:40,992 INFO L168 Benchmark]: TraceAbstraction took 37153.23 ms. Allocated memory was 159.4 MB in the beginning and 791.7 MB in the end (delta: 632.3 MB). Free memory was 110.1 MB in the beginning and 625.0 MB in the end (delta: -514.9 MB). Peak memory consumption was 117.9 MB. Max. memory is 8.0 GB. [2021-02-23 22:57:40,993 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 159.4 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 344.22 ms. Allocated memory is still 159.4 MB. Free memory was 134.7 MB in the beginning and 125.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.11 ms. Allocated memory is still 159.4 MB. Free memory was 125.3 MB in the beginning and 124.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 421.33 ms. Allocated memory is still 159.4 MB. Free memory was 124.2 MB in the beginning and 110.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 37153.23 ms. Allocated memory was 159.4 MB in the beginning and 791.7 MB in the end (delta: 632.3 MB). Free memory was 110.1 MB in the beginning and 625.0 MB in the end (delta: -514.9 MB). Peak memory consumption was 117.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int input = 25; VAL [input=25] [L13] CALL, EXPR id(input) VAL [\old(x)=25] [L7] COND FALSE !(x==0) VAL [\old(x)=25, x=25] [L8] CALL, EXPR id(x-1) VAL [\old(x)=24] [L7] COND FALSE !(x==0) VAL [\old(x)=24, x=24] [L8] CALL, EXPR id(x-1) VAL [\old(x)=23] [L7] COND FALSE !(x==0) VAL [\old(x)=23, x=23] [L8] CALL, EXPR id(x-1) VAL [\old(x)=22] [L7] COND FALSE !(x==0) VAL [\old(x)=22, x=22] [L8] CALL, EXPR id(x-1) VAL [\old(x)=21] [L7] COND FALSE !(x==0) VAL [\old(x)=21, x=21] [L8] CALL, EXPR id(x-1) VAL [\old(x)=20] [L7] COND FALSE !(x==0) VAL [\old(x)=20, x=20] [L8] CALL, EXPR id(x-1) VAL [\old(x)=19] [L7] COND FALSE !(x==0) VAL [\old(x)=19, x=19] [L8] CALL, EXPR id(x-1) VAL [\old(x)=18] [L7] COND FALSE !(x==0) VAL [\old(x)=18, x=18] [L8] CALL, EXPR id(x-1) VAL [\old(x)=17] [L7] COND FALSE !(x==0) VAL [\old(x)=17, x=17] [L8] CALL, EXPR id(x-1) VAL [\old(x)=16] [L7] COND FALSE !(x==0) VAL [\old(x)=16, x=16] [L8] CALL, EXPR id(x-1) VAL [\old(x)=15] [L7] COND FALSE !(x==0) VAL [\old(x)=15, x=15] [L8] CALL, EXPR id(x-1) VAL [\old(x)=14] [L7] COND FALSE !(x==0) VAL [\old(x)=14, x=14] [L8] CALL, EXPR id(x-1) VAL [\old(x)=13] [L7] COND FALSE !(x==0) VAL [\old(x)=13, x=13] [L8] CALL, EXPR id(x-1) VAL [\old(x)=12] [L7] COND FALSE !(x==0) VAL [\old(x)=12, x=12] [L8] CALL, EXPR id(x-1) VAL [\old(x)=11] [L7] COND FALSE !(x==0) VAL [\old(x)=11, x=11] [L8] CALL, EXPR id(x-1) VAL [\old(x)=10] [L7] COND FALSE !(x==0) VAL [\old(x)=10, x=10] [L8] CALL, EXPR id(x-1) VAL [\old(x)=9] [L7] COND FALSE !(x==0) VAL [\old(x)=9, x=9] [L8] CALL, EXPR id(x-1) VAL [\old(x)=8] [L7] COND FALSE !(x==0) VAL [\old(x)=8, x=8] [L8] CALL, EXPR id(x-1) VAL [\old(x)=7] [L7] COND FALSE !(x==0) VAL [\old(x)=7, x=7] [L8] CALL, EXPR id(x-1) VAL [\old(x)=6] [L7] COND FALSE !(x==0) VAL [\old(x)=6, x=6] [L8] CALL, EXPR id(x-1) VAL [\old(x)=5] [L7] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L8] CALL, EXPR id(x-1) VAL [\old(x)=4] [L7] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L8] CALL, EXPR id(x-1) VAL [\old(x)=3] [L7] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L8] CALL, EXPR id(x-1) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id(x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id(x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 VAL [\old(x)=0, x=0] [L7] return 0; VAL [\old(x)=0, \result=0, x=0] [L8] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L8] return id(x-1) + 1; VAL [\old(x)=1, \result=1, id(x-1)=0, x=1] [L8] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L8] return id(x-1) + 1; VAL [\old(x)=2, \result=2, id(x-1)=1, x=2] [L8] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L8] return id(x-1) + 1; VAL [\old(x)=3, \result=3, id(x-1)=2, x=3] [L8] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L8] return id(x-1) + 1; VAL [\old(x)=4, \result=4, id(x-1)=3, x=4] [L8] RET, EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L8] return id(x-1) + 1; VAL [\old(x)=5, \result=5, id(x-1)=4, x=5] [L8] RET, EXPR id(x-1) VAL [\old(x)=6, id(x-1)=5, x=6] [L8] return id(x-1) + 1; VAL [\old(x)=6, \result=6, id(x-1)=5, x=6] [L8] RET, EXPR id(x-1) VAL [\old(x)=7, id(x-1)=6, x=7] [L8] return id(x-1) + 1; VAL [\old(x)=7, \result=7, id(x-1)=6, x=7] [L8] RET, EXPR id(x-1) VAL [\old(x)=8, id(x-1)=7, x=8] [L8] return id(x-1) + 1; VAL [\old(x)=8, \result=8, id(x-1)=7, x=8] [L8] RET, EXPR id(x-1) VAL [\old(x)=9, id(x-1)=8, x=9] [L8] return id(x-1) + 1; VAL [\old(x)=9, \result=9, id(x-1)=8, x=9] [L8] RET, EXPR id(x-1) VAL [\old(x)=10, id(x-1)=9, x=10] [L8] return id(x-1) + 1; VAL [\old(x)=10, \result=10, id(x-1)=9, x=10] [L8] RET, EXPR id(x-1) VAL [\old(x)=11, id(x-1)=10, x=11] [L8] return id(x-1) + 1; VAL [\old(x)=11, \result=11, id(x-1)=10, x=11] [L8] RET, EXPR id(x-1) VAL [\old(x)=12, id(x-1)=11, x=12] [L8] return id(x-1) + 1; VAL [\old(x)=12, \result=12, id(x-1)=11, x=12] [L8] RET, EXPR id(x-1) VAL [\old(x)=13, id(x-1)=12, x=13] [L8] return id(x-1) + 1; VAL [\old(x)=13, \result=13, id(x-1)=12, x=13] [L8] RET, EXPR id(x-1) VAL [\old(x)=14, id(x-1)=13, x=14] [L8] return id(x-1) + 1; VAL [\old(x)=14, \result=14, id(x-1)=13, x=14] [L8] RET, EXPR id(x-1) VAL [\old(x)=15, id(x-1)=14, x=15] [L8] return id(x-1) + 1; VAL [\old(x)=15, \result=15, id(x-1)=14, x=15] [L8] RET, EXPR id(x-1) VAL [\old(x)=16, id(x-1)=15, x=16] [L8] return id(x-1) + 1; VAL [\old(x)=16, \result=16, id(x-1)=15, x=16] [L8] RET, EXPR id(x-1) VAL [\old(x)=17, id(x-1)=16, x=17] [L8] return id(x-1) + 1; VAL [\old(x)=17, \result=17, id(x-1)=16, x=17] [L8] RET, EXPR id(x-1) VAL [\old(x)=18, id(x-1)=17, x=18] [L8] return id(x-1) + 1; VAL [\old(x)=18, \result=18, id(x-1)=17, x=18] [L8] RET, EXPR id(x-1) VAL [\old(x)=19, id(x-1)=18, x=19] [L8] return id(x-1) + 1; VAL [\old(x)=19, \result=19, id(x-1)=18, x=19] [L8] RET, EXPR id(x-1) VAL [\old(x)=20, id(x-1)=19, x=20] [L8] return id(x-1) + 1; VAL [\old(x)=20, \result=20, id(x-1)=19, x=20] [L8] RET, EXPR id(x-1) VAL [\old(x)=21, id(x-1)=20, x=21] [L8] return id(x-1) + 1; VAL [\old(x)=21, \result=21, id(x-1)=20, x=21] [L8] RET, EXPR id(x-1) VAL [\old(x)=22, id(x-1)=21, x=22] [L8] return id(x-1) + 1; VAL [\old(x)=22, \result=22, id(x-1)=21, x=22] [L8] RET, EXPR id(x-1) VAL [\old(x)=23, id(x-1)=22, x=23] [L8] return id(x-1) + 1; VAL [\old(x)=23, \result=23, id(x-1)=22, x=23] [L8] RET, EXPR id(x-1) VAL [\old(x)=24, id(x-1)=23, x=24] [L8] return id(x-1) + 1; VAL [\old(x)=24, \result=24, id(x-1)=23, x=24] [L8] RET, EXPR id(x-1) VAL [\old(x)=25, id(x-1)=24, x=25] [L8] return id(x-1) + 1; VAL [\old(x)=25, \result=25, id(x-1)=24, x=25] [L13] RET, EXPR id(input) VAL [id(input)=25, input=25] [L13] int result = id(input); VAL [id(input)=25, input=25, result=25] [L14] COND TRUE result == 25 VAL [input=25, result=25] [L15] reach_error() VAL [input=25, result=25] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.9s, OverallIterations: 26, TraceHistogramMax: 26, AutomataDifference: 17.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 653 SDtfs, 3152 SDslu, 1480 SDs, 0 SdLazy, 3099 SolverSat, 898 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1477 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 776 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5853 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred 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: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 3224 NumberOfCodeBlocks, 3224 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2975 ConstructedInterpolants, 0 QuantifiedInterpolants, 1201671 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 1 PerfectInterpolantSequences, 7500/19600 InterpolantCoveringCapability, 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...