/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_o20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:57:23,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:57:23,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:57:23,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 22:57:23,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 22:57:23,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 22:57:23,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 22:57:23,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 22:57:23,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 22:57:23,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 22:57:23,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 22:57:23,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 22:57:23,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:57:23,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:57:23,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:57:23,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:57:23,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:57:23,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:57:23,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:57:23,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:57:23,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:57:23,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:57:23,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:57:23,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:57:23,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 22:57:23,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 22:57:23,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 22:57:23,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 22:57:23,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 22:57:23,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 22:57:23,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 22:57:23,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 22:57:23,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 22:57:23,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 22:57:23,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 22:57:23,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 22:57:23,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 22:57:23,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 22:57:23,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 22:57:23,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 22:57:23,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 22:57:23,511 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 22:57:23,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:57:23,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:57:23,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:57:23,552 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:57:23,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:57:23,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:57:23,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:57:23,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:57:23,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:57:23,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:57:23,555 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:57:23,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:57:23,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:57:23,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:57:23,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:57:23,557 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:57:23,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:57:23,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:57:23,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:57:23,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:57:23,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:57:23,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:57:23,558 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:57:24,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:57:24,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:57:24,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:57:24,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:57:24,174 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:57:24,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o20.c [2021-02-23 22:57:24,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce0280b1d/1f60f5f5d9c3482baa08b487fb670115/FLAG85234fbff [2021-02-23 22:57:25,105 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:57:25,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_o20.c [2021-02-23 22:57:25,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce0280b1d/1f60f5f5d9c3482baa08b487fb670115/FLAG85234fbff [2021-02-23 22:57:25,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce0280b1d/1f60f5f5d9c3482baa08b487fb670115 [2021-02-23 22:57:25,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:57:25,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:57:25,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:57:25,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:57:25,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:57:25,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:57:25" (1/1) ... [2021-02-23 22:57:25,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b382feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:25, skipping insertion in model container [2021-02-23 22:57:25,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:57:25" (1/1) ... [2021-02-23 22:57:25,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:57:25,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:57:25,709 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_o20.c[516,529] [2021-02-23 22:57:25,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:57:25,733 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:57:25,753 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_o20.c[516,529] [2021-02-23 22:57:25,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:57:25,776 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:57:25,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:25 WrapperNode [2021-02-23 22:57:25,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:57:25,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:57:25,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:57:25,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:57:25,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:25" (1/1) ... [2021-02-23 22:57:25,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:25" (1/1) ... [2021-02-23 22:57:25,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:25" (1/1) ... [2021-02-23 22:57:25,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:25" (1/1) ... [2021-02-23 22:57:25,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:25" (1/1) ... [2021-02-23 22:57:25,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:25" (1/1) ... [2021-02-23 22:57:25,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:25" (1/1) ... [2021-02-23 22:57:25,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:57:25,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:57:25,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:57:25,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:57:25,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:25" (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 22:57:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:57:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:57:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:57:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-02-23 22:57:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:57:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-23 22:57:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:57:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:57:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:57:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:57:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-02-23 22:57:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:57:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:57:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:57:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:57:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:57:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:57:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:57:26,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:57:26,470 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 22:57:26,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:57:26 BoogieIcfgContainer [2021-02-23 22:57:26,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:57:26,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:57:26,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:57:26,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:57:26,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:57:25" (1/3) ... [2021-02-23 22:57:26,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526cfddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:57:26, skipping insertion in model container [2021-02-23 22:57:26,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:25" (2/3) ... [2021-02-23 22:57:26,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526cfddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:57:26, skipping insertion in model container [2021-02-23 22:57:26,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:57:26" (3/3) ... [2021-02-23 22:57:26,508 INFO L111 eAbstractionObserver]: Analyzing ICFG id_o20.c [2021-02-23 22:57:26,533 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:57:26,549 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:57:26,614 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:57:26,676 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:57:26,677 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:57:26,677 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:57:26,677 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:57:26,678 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:57:26,678 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:57:26,678 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:57:26,678 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:57:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-02-23 22:57:26,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 22:57:26,742 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:26,744 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 22:57:26,745 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:26,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:26,755 INFO L82 PathProgramCache]: Analyzing trace with hash 285930827, now seen corresponding path program 1 times [2021-02-23 22:57:26,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:26,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831668870] [2021-02-23 22:57:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:27,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:57:27,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:27,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:27,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:27,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:27,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:27,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:27,377 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 22:57:27,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831668870] [2021-02-23 22:57:27,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:57:27,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:57:27,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532389112] [2021-02-23 22:57:27,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:57:27,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:27,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:57:27,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:57:27,417 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 6 states. [2021-02-23 22:57:27,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:27,997 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-02-23 22:57:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 22:57:28,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-23 22:57:28,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:28,018 INFO L225 Difference]: With dead ends: 46 [2021-02-23 22:57:28,018 INFO L226 Difference]: Without dead ends: 30 [2021-02-23 22:57:28,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:57:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-23 22:57:28,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-02-23 22:57:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-23 22:57:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-02-23 22:57:28,093 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 24 [2021-02-23 22:57:28,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:28,093 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-02-23 22:57:28,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:57:28,094 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-02-23 22:57:28,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-23 22:57:28,096 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:28,097 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] [2021-02-23 22:57:28,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:57:28,098 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:28,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:28,099 INFO L82 PathProgramCache]: Analyzing trace with hash 838352253, now seen corresponding path program 1 times [2021-02-23 22:57:28,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:28,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042445944] [2021-02-23 22:57:28,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:28,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:28,189 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:57:28,191 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [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 1 [2021-02-23 22:57:28,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:28,249 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 22:57:28,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:28,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:28,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:28,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:28,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:28,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:28,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:28,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:28,398 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 22:57:28,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042445944] [2021-02-23 22:57:28,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:28,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-23 22:57:28,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475774370] [2021-02-23 22:57:28,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 22:57:28,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:28,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 22:57:28,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-23 22:57:28,409 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2021-02-23 22:57:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:28,971 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-02-23 22:57:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 22:57:28,982 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-02-23 22:57:28,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:28,987 INFO L225 Difference]: With dead ends: 39 [2021-02-23 22:57:28,988 INFO L226 Difference]: Without dead ends: 34 [2021-02-23 22:57:28,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-02-23 22:57:28,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-02-23 22:57:29,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-02-23 22:57:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-23 22:57:29,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-02-23 22:57:29,030 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 31 [2021-02-23 22:57:29,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:29,031 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-02-23 22:57:29,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 22:57:29,031 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-02-23 22:57:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 22:57:29,036 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:29,037 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 22:57:29,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:57:29,038 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:29,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:29,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1267124291, now seen corresponding path program 2 times [2021-02-23 22:57:29,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:29,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422114303] [2021-02-23 22:57:29,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:29,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:29,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:29,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:29,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:29,205 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:57:29,207 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:57:29,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:29,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:29,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:29,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:29,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:29,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:29,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:29,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:29,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:29,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:29,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:29,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:29,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:29,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:29,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:29,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:29,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:29,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:29,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:29,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:29,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:29,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:29,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:29,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-23 22:57:29,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422114303] [2021-02-23 22:57:29,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:29,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-23 22:57:29,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166842930] [2021-02-23 22:57:29,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 22:57:29,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:29,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 22:57:29,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:57:29,427 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 10 states. [2021-02-23 22:57:30,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:30,018 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2021-02-23 22:57:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 22:57:30,019 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2021-02-23 22:57:30,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:30,021 INFO L225 Difference]: With dead ends: 43 [2021-02-23 22:57:30,021 INFO L226 Difference]: Without dead ends: 38 [2021-02-23 22:57:30,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-02-23 22:57:30,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-23 22:57:30,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-23 22:57:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-23 22:57:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-02-23 22:57:30,036 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 38 [2021-02-23 22:57:30,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:30,037 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-02-23 22:57:30,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 22:57:30,037 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-02-23 22:57:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 22:57:30,039 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:30,040 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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 22:57:30,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 22:57:30,044 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:30,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:30,045 INFO L82 PathProgramCache]: Analyzing trace with hash -655881425, now seen corresponding path program 3 times [2021-02-23 22:57:30,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:30,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137525652] [2021-02-23 22:57:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:30,186 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:57:30,191 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:57:30,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:30,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:30,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:30,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:30,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:30,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:30,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:30,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:30,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:30,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-02-23 22:57:30,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137525652] [2021-02-23 22:57:30,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:30,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-23 22:57:30,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978483823] [2021-02-23 22:57:30,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 22:57:30,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:30,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 22:57:30,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-02-23 22:57:30,524 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 12 states. [2021-02-23 22:57:31,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:31,321 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-02-23 22:57:31,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 22:57:31,321 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2021-02-23 22:57:31,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:31,326 INFO L225 Difference]: With dead ends: 47 [2021-02-23 22:57:31,327 INFO L226 Difference]: Without dead ends: 42 [2021-02-23 22:57:31,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-02-23 22:57:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-02-23 22:57:31,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-02-23 22:57:31,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-23 22:57:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-02-23 22:57:31,346 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 45 [2021-02-23 22:57:31,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:31,346 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-02-23 22:57:31,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 22:57:31,347 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-02-23 22:57:31,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-23 22:57:31,348 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:31,349 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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 22:57:31,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 22:57:31,349 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:31,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:31,350 INFO L82 PathProgramCache]: Analyzing trace with hash -492339153, now seen corresponding path program 4 times [2021-02-23 22:57:31,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:31,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283914030] [2021-02-23 22:57:31,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,400 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:57:31,401 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:57:31,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:31,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:31,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:31,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-02-23 22:57:31,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283914030] [2021-02-23 22:57:31,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:31,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-02-23 22:57:31,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194110980] [2021-02-23 22:57:31,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 22:57:31,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:31,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 22:57:31,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-02-23 22:57:31,724 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 14 states. [2021-02-23 22:57:32,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:32,717 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2021-02-23 22:57:32,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 22:57:32,718 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2021-02-23 22:57:32,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:32,720 INFO L225 Difference]: With dead ends: 51 [2021-02-23 22:57:32,720 INFO L226 Difference]: Without dead ends: 46 [2021-02-23 22:57:32,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2021-02-23 22:57:32,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-23 22:57:32,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-02-23 22:57:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-02-23 22:57:32,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-02-23 22:57:32,739 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 52 [2021-02-23 22:57:32,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:32,741 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-02-23 22:57:32,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 22:57:32,741 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-02-23 22:57:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-02-23 22:57:32,747 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:32,747 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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 22:57:32,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 22:57:32,748 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:32,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:32,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1565290209, now seen corresponding path program 5 times [2021-02-23 22:57:32,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:32,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925197616] [2021-02-23 22:57:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,810 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:57:32,812 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:57:32,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:32,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:32,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:32,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:32,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:33,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:33,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:33,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:33,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:33,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-23 22:57:33,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925197616] [2021-02-23 22:57:33,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:33,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-02-23 22:57:33,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026638133] [2021-02-23 22:57:33,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 22:57:33,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:33,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 22:57:33,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-23 22:57:33,206 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 16 states. [2021-02-23 22:57:34,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:34,369 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2021-02-23 22:57:34,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 22:57:34,370 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2021-02-23 22:57:34,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:34,372 INFO L225 Difference]: With dead ends: 55 [2021-02-23 22:57:34,372 INFO L226 Difference]: Without dead ends: 50 [2021-02-23 22:57:34,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2021-02-23 22:57:34,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-23 22:57:34,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-02-23 22:57:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-23 22:57:34,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-02-23 22:57:34,397 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 59 [2021-02-23 22:57:34,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:34,398 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-02-23 22:57:34,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 22:57:34,399 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-02-23 22:57:34,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-23 22:57:34,406 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:34,407 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 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 22:57:34,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 22:57:34,408 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:34,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:34,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1220161887, now seen corresponding path program 6 times [2021-02-23 22:57:34,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:34,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072090322] [2021-02-23 22:57:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:34,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:34,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:34,555 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:57:34,557 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:57:34,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:34,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:34,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:34,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:34,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:34,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:34,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:34,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:34,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:34,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:34,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:34,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:34,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:34,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:34,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:34,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:34,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:34,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:34,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:34,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:34,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:34,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:34,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:34,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:34,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:34,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:34,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:34,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:34,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:34,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-02-23 22:57:35,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072090322] [2021-02-23 22:57:35,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:35,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-23 22:57:35,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879836506] [2021-02-23 22:57:35,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 22:57:35,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:35,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 22:57:35,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-02-23 22:57:35,004 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 18 states. [2021-02-23 22:57:36,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:36,452 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2021-02-23 22:57:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 22:57:36,453 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2021-02-23 22:57:36,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:36,454 INFO L225 Difference]: With dead ends: 59 [2021-02-23 22:57:36,455 INFO L226 Difference]: Without dead ends: 54 [2021-02-23 22:57:36,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2021-02-23 22:57:36,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-02-23 22:57:36,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-02-23 22:57:36,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-02-23 22:57:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2021-02-23 22:57:36,474 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 66 [2021-02-23 22:57:36,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:36,474 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2021-02-23 22:57:36,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 22:57:36,475 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2021-02-23 22:57:36,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-02-23 22:57:36,476 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:36,476 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 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 22:57:36,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 22:57:36,477 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:36,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:36,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1638307693, now seen corresponding path program 7 times [2021-02-23 22:57:36,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:36,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765104982] [2021-02-23 22:57:36,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:36,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:36,540 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:57:36,541 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:57:36,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:36,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:36,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:36,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:36,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:36,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:36,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:36,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:36,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:36,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:36,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:36,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:36,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:36,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:36,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:36,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:36,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:36,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:36,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:36,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:36,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:36,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:36,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:37,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:37,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:37,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:37,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:37,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:37,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:37,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-02-23 22:57:37,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765104982] [2021-02-23 22:57:37,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:37,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-02-23 22:57:37,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564099488] [2021-02-23 22:57:37,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 22:57:37,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:37,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 22:57:37,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2021-02-23 22:57:37,094 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 20 states. [2021-02-23 22:57:38,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:38,838 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2021-02-23 22:57:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 22:57:38,839 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 73 [2021-02-23 22:57:38,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:38,841 INFO L225 Difference]: With dead ends: 63 [2021-02-23 22:57:38,841 INFO L226 Difference]: Without dead ends: 58 [2021-02-23 22:57:38,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=161, Invalid=1819, Unknown=0, NotChecked=0, Total=1980 [2021-02-23 22:57:38,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-23 22:57:38,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-23 22:57:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-23 22:57:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2021-02-23 22:57:38,857 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 73 [2021-02-23 22:57:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:38,858 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2021-02-23 22:57:38,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 22:57:38,858 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2021-02-23 22:57:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-23 22:57:38,859 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:38,860 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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 22:57:38,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 22:57:38,860 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:38,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:38,861 INFO L82 PathProgramCache]: Analyzing trace with hash -8117485, now seen corresponding path program 8 times [2021-02-23 22:57:38,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:38,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722958156] [2021-02-23 22:57:38,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:38,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:38,913 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:57:38,915 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:57:38,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:38,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:38,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:38,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:38,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:38,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:39,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:39,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:39,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:39,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:39,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:39,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:39,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:39,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:39,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:39,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:39,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:39,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:39,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:39,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:39,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:39,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:39,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-02-23 22:57:39,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722958156] [2021-02-23 22:57:39,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:39,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-02-23 22:57:39,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061209732] [2021-02-23 22:57:39,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 22:57:39,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:39,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 22:57:39,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2021-02-23 22:57:39,566 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 22 states. [2021-02-23 22:57:41,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:41,628 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-02-23 22:57:41,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-23 22:57:41,629 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2021-02-23 22:57:41,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:41,631 INFO L225 Difference]: With dead ends: 67 [2021-02-23 22:57:41,631 INFO L226 Difference]: Without dead ends: 62 [2021-02-23 22:57:41,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=180, Invalid=2270, Unknown=0, NotChecked=0, Total=2450 [2021-02-23 22:57:41,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-02-23 22:57:41,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-02-23 22:57:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-23 22:57:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2021-02-23 22:57:41,646 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 80 [2021-02-23 22:57:41,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:41,647 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2021-02-23 22:57:41,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 22:57:41,647 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2021-02-23 22:57:41,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-23 22:57:41,648 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:41,648 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 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 22:57:41,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 22:57:41,648 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:41,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:41,649 INFO L82 PathProgramCache]: Analyzing trace with hash -171771835, now seen corresponding path program 9 times [2021-02-23 22:57:41,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:41,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072275311] [2021-02-23 22:57:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:41,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:41,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:41,701 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:57:41,702 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:57:41,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:41,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:41,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:41,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:41,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:41,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:41,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:41,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:41,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:41,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:41,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:41,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:41,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:41,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:41,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:41,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:41,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:41,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:41,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:41,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:41,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:42,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:42,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:42,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:42,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:42,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:42,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:42,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:42,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:42,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:42,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:42,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:42,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:42,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:42,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:42,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:42,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:42,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:42,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:42,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:42,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:42,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:42,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:42,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-02-23 22:57:42,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072275311] [2021-02-23 22:57:42,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:42,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-02-23 22:57:42,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695366582] [2021-02-23 22:57:42,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-23 22:57:42,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:42,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-23 22:57:42,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2021-02-23 22:57:42,536 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 24 states. [2021-02-23 22:57:45,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:45,017 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-02-23 22:57:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-23 22:57:45,018 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 87 [2021-02-23 22:57:45,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:45,020 INFO L225 Difference]: With dead ends: 71 [2021-02-23 22:57:45,020 INFO L226 Difference]: Without dead ends: 66 [2021-02-23 22:57:45,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=199, Invalid=2771, Unknown=0, NotChecked=0, Total=2970 [2021-02-23 22:57:45,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-02-23 22:57:45,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-02-23 22:57:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-23 22:57:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-02-23 22:57:45,037 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 87 [2021-02-23 22:57:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:45,038 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-02-23 22:57:45,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-23 22:57:45,038 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-02-23 22:57:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-02-23 22:57:45,039 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:45,039 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 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 22:57:45,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 22:57:45,040 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:45,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:45,041 INFO L82 PathProgramCache]: Analyzing trace with hash 437419397, now seen corresponding path program 10 times [2021-02-23 22:57:45,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:45,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106621020] [2021-02-23 22:57:45,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:45,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,097 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:57:45,098 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:57:45,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:45,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:45,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:45,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:45,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:45,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:45,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:45,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:45,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:45,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:45,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:45,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:45,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:45,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:45,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-02-23 22:57:46,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106621020] [2021-02-23 22:57:46,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:46,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-02-23 22:57:46,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984562904] [2021-02-23 22:57:46,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-23 22:57:46,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:46,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-23 22:57:46,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2021-02-23 22:57:46,069 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 26 states. [2021-02-23 22:57:48,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:48,970 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2021-02-23 22:57:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-23 22:57:48,971 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 94 [2021-02-23 22:57:48,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:48,972 INFO L225 Difference]: With dead ends: 75 [2021-02-23 22:57:48,972 INFO L226 Difference]: Without dead ends: 70 [2021-02-23 22:57:48,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=218, Invalid=3322, Unknown=0, NotChecked=0, Total=3540 [2021-02-23 22:57:48,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-23 22:57:48,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-02-23 22:57:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-02-23 22:57:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2021-02-23 22:57:48,990 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 94 [2021-02-23 22:57:48,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:48,990 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2021-02-23 22:57:48,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-23 22:57:48,991 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2021-02-23 22:57:48,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-02-23 22:57:48,992 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:48,992 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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 22:57:48,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 22:57:48,993 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:48,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:48,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1472011767, now seen corresponding path program 11 times [2021-02-23 22:57:48,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:48,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896626167] [2021-02-23 22:57:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:49,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,058 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:57:49,059 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:57:49,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:49,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:49,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:49,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:49,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:49,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:49,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:49,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:49,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:49,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:49,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:49,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:49,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:49,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:49,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:49,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:50,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:50,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:50,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:50,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:50,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-02-23 22:57:50,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896626167] [2021-02-23 22:57:50,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:50,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-02-23 22:57:50,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456556631] [2021-02-23 22:57:50,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-23 22:57:50,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:50,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-23 22:57:50,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2021-02-23 22:57:50,144 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 28 states. [2021-02-23 22:57:53,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:53,342 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2021-02-23 22:57:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-23 22:57:53,342 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 101 [2021-02-23 22:57:53,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:53,344 INFO L225 Difference]: With dead ends: 79 [2021-02-23 22:57:53,344 INFO L226 Difference]: Without dead ends: 74 [2021-02-23 22:57:53,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=237, Invalid=3923, Unknown=0, NotChecked=0, Total=4160 [2021-02-23 22:57:53,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-02-23 22:57:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-02-23 22:57:53,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-23 22:57:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2021-02-23 22:57:53,360 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 101 [2021-02-23 22:57:53,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:53,360 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2021-02-23 22:57:53,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-23 22:57:53,361 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2021-02-23 22:57:53,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-02-23 22:57:53,362 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:53,363 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 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 22:57:53,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 22:57:53,363 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:53,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:53,364 INFO L82 PathProgramCache]: Analyzing trace with hash -685711881, now seen corresponding path program 12 times [2021-02-23 22:57:53,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:53,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642809233] [2021-02-23 22:57:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:53,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:53,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:53,449 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:57:53,452 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:57:53,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:53,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:53,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:53,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:53,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:53,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:53,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:53,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:53,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:53,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:53,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:53,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:53,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:53,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:53,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:53,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:53,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:53,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:53,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:53,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:53,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:53,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:53,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:53,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:53,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:53,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:54,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:54,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:54,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:54,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:54,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:54,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:54,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:54,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:54,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:54,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:54,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:54,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:54,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:54,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:54,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-02-23 22:57:54,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642809233] [2021-02-23 22:57:54,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:54,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-02-23 22:57:54,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737100676] [2021-02-23 22:57:54,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-23 22:57:54,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:54,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-23 22:57:54,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2021-02-23 22:57:54,746 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 30 states. [2021-02-23 22:57:58,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:57:58,301 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2021-02-23 22:57:58,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-23 22:57:58,302 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 108 [2021-02-23 22:57:58,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:57:58,303 INFO L225 Difference]: With dead ends: 83 [2021-02-23 22:57:58,304 INFO L226 Difference]: Without dead ends: 78 [2021-02-23 22:57:58,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=256, Invalid=4574, Unknown=0, NotChecked=0, Total=4830 [2021-02-23 22:57:58,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-23 22:57:58,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-02-23 22:57:58,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-23 22:57:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2021-02-23 22:57:58,319 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 108 [2021-02-23 22:57:58,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:57:58,320 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2021-02-23 22:57:58,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-02-23 22:57:58,320 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2021-02-23 22:57:58,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-02-23 22:57:58,322 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:57:58,322 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 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 22:57:58,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 22:57:58,322 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:57:58,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:57:58,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1929107881, now seen corresponding path program 13 times [2021-02-23 22:57:58,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:57:58,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457577093] [2021-02-23 22:57:58,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:57:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:58,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:58,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,381 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:57:58,382 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:57:58,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:58,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:57:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:58,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:58,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:57:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:58,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:58,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:58,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:58,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:58,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:58,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:58,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:58,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:58,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:58,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:58,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:58,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:58,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:58,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:58,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:58,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:59,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:59,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:59,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:59,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:59,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:59,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:59,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:59,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:59,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:59,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:59,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:59,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:59,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:59,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:59,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:59,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:59,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:59,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:59,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:59,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:59,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:59,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:59,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:59,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:57:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:57:59,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:57:59,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:57:59,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:57:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-02-23 22:57:59,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457577093] [2021-02-23 22:57:59,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:57:59,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-02-23 22:57:59,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066415220] [2021-02-23 22:57:59,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-23 22:57:59,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:57:59,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-23 22:57:59,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2021-02-23 22:57:59,706 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 32 states. [2021-02-23 22:58:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:58:03,614 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2021-02-23 22:58:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-23 22:58:03,614 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 115 [2021-02-23 22:58:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:58:03,616 INFO L225 Difference]: With dead ends: 87 [2021-02-23 22:58:03,616 INFO L226 Difference]: Without dead ends: 82 [2021-02-23 22:58:03,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=275, Invalid=5275, Unknown=0, NotChecked=0, Total=5550 [2021-02-23 22:58:03,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-23 22:58:03,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-02-23 22:58:03,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-23 22:58:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2021-02-23 22:58:03,633 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 115 [2021-02-23 22:58:03,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:58:03,634 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2021-02-23 22:58:03,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-02-23 22:58:03,634 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2021-02-23 22:58:03,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-02-23 22:58:03,635 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:58:03,635 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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 22:58:03,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 22:58:03,636 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:58:03,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:58:03,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1482638441, now seen corresponding path program 14 times [2021-02-23 22:58:03,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:58:03,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72942293] [2021-02-23 22:58:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:58:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:03,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:03,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:03,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:03,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:03,693 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:58:03,694 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:58:03,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:03,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:03,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:58:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:03,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:03,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:03,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:58:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:03,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:03,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:03,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:03,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:03,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:03,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:03,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:03,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:03,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:03,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:03,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:03,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:03,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:03,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:03,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:03,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:03,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:03,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:03,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:03,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:03,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:04,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:04,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:04,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:04,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:04,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:04,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:04,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:04,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:04,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:04,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:04,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:04,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:04,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:04,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:04,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:04,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:04,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:04,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:04,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:04,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:04,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:04,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:04,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:04,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:04,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:04,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:05,112 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-02-23 22:58:05,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72942293] [2021-02-23 22:58:05,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:58:05,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-02-23 22:58:05,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550597238] [2021-02-23 22:58:05,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-02-23 22:58:05,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:58:05,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-02-23 22:58:05,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2021-02-23 22:58:05,115 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 34 states. [2021-02-23 22:58:09,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:58:09,533 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2021-02-23 22:58:09,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-02-23 22:58:09,535 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 122 [2021-02-23 22:58:09,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:58:09,537 INFO L225 Difference]: With dead ends: 91 [2021-02-23 22:58:09,537 INFO L226 Difference]: Without dead ends: 86 [2021-02-23 22:58:09,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=294, Invalid=6026, Unknown=0, NotChecked=0, Total=6320 [2021-02-23 22:58:09,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-23 22:58:09,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-02-23 22:58:09,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-23 22:58:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2021-02-23 22:58:09,553 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 122 [2021-02-23 22:58:09,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:58:09,553 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2021-02-23 22:58:09,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-02-23 22:58:09,554 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2021-02-23 22:58:09,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-02-23 22:58:09,555 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:58:09,555 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 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 22:58:09,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 22:58:09,555 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:58:09,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:58:09,556 INFO L82 PathProgramCache]: Analyzing trace with hash -793564325, now seen corresponding path program 15 times [2021-02-23 22:58:09,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:58:09,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41024419] [2021-02-23 22:58:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:58:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:09,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:09,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:09,625 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:58:09,625 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:58:09,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:09,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:58:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:09,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:09,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:58:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:09,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:09,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:09,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:09,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:09,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:09,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:09,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:09,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:09,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:09,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:09,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:09,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:09,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:09,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:09,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:09,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:09,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:09,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:09,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:09,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:10,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:10,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:10,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:10,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:10,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:10,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:10,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:10,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:10,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:10,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:10,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:10,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:10,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:10,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:10,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:10,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:10,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:10,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:10,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:10,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:10,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:10,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:10,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:10,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-02-23 22:58:11,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41024419] [2021-02-23 22:58:11,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:58:11,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-02-23 22:58:11,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279681988] [2021-02-23 22:58:11,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-02-23 22:58:11,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:58:11,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-02-23 22:58:11,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 22:58:11,076 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 36 states. [2021-02-23 22:58:16,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:58:16,162 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2021-02-23 22:58:16,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-02-23 22:58:16,163 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 129 [2021-02-23 22:58:16,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:58:16,165 INFO L225 Difference]: With dead ends: 95 [2021-02-23 22:58:16,165 INFO L226 Difference]: Without dead ends: 90 [2021-02-23 22:58:16,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=313, Invalid=6827, Unknown=0, NotChecked=0, Total=7140 [2021-02-23 22:58:16,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-02-23 22:58:16,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-02-23 22:58:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-23 22:58:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2021-02-23 22:58:16,181 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 129 [2021-02-23 22:58:16,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:58:16,182 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2021-02-23 22:58:16,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-02-23 22:58:16,182 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2021-02-23 22:58:16,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-02-23 22:58:16,183 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:58:16,184 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 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 22:58:16,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 22:58:16,184 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:58:16,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:58:16,185 INFO L82 PathProgramCache]: Analyzing trace with hash -251809573, now seen corresponding path program 16 times [2021-02-23 22:58:16,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:58:16,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990426238] [2021-02-23 22:58:16,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:58:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:16,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:16,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,248 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:58:16,249 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:58:16,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:16,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:58:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:16,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:16,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:58:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:16,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:16,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:16,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:16,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:16,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:16,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:16,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:16,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:16,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:16,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:16,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:16,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:16,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:16,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:16,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:16,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:16,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:16,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:16,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:16,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:16,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:16,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:17,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:17,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:17,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:17,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:17,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:17,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:17,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:17,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:17,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:17,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:17,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:17,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:17,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:17,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:17,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-02-23 22:58:17,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990426238] [2021-02-23 22:58:17,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:58:17,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-02-23 22:58:17,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163581913] [2021-02-23 22:58:17,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-02-23 22:58:17,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:58:17,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-02-23 22:58:17,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2021-02-23 22:58:17,851 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 38 states. [2021-02-23 22:58:23,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:58:23,316 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2021-02-23 22:58:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-02-23 22:58:23,317 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 136 [2021-02-23 22:58:23,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:58:23,318 INFO L225 Difference]: With dead ends: 99 [2021-02-23 22:58:23,318 INFO L226 Difference]: Without dead ends: 94 [2021-02-23 22:58:23,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=332, Invalid=7678, Unknown=0, NotChecked=0, Total=8010 [2021-02-23 22:58:23,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-02-23 22:58:23,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-02-23 22:58:23,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-02-23 22:58:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2021-02-23 22:58:23,336 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 136 [2021-02-23 22:58:23,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:58:23,336 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2021-02-23 22:58:23,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-02-23 22:58:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2021-02-23 22:58:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-02-23 22:58:23,337 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:58:23,338 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 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 22:58:23,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 22:58:23,338 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:58:23,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:58:23,339 INFO L82 PathProgramCache]: Analyzing trace with hash -191425779, now seen corresponding path program 17 times [2021-02-23 22:58:23,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:58:23,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247345848] [2021-02-23 22:58:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:58:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:23,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:23,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:23,403 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:58:23,403 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:58:23,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:23,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:58:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:23,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:23,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:58:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:23,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:23,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:23,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:23,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:23,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:23,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:23,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:23,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:23,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:23,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:23,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:23,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:23,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:23,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:23,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:23,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:23,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:23,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:23,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:23,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:23,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:23,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:23,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:23,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:23,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:24,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:24,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:24,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:24,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:24,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:24,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:24,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:24,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:24,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:24,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:24,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:24,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:24,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:24,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:24,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:24,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:24,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:24,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:24,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:24,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:24,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:24,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:25,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:25,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:25,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:25,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:25,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:25,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:25,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:25,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:25,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:25,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:25,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:25,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-02-23 22:58:25,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247345848] [2021-02-23 22:58:25,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:58:25,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2021-02-23 22:58:25,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602347829] [2021-02-23 22:58:25,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-02-23 22:58:25,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:58:25,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-02-23 22:58:25,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2021-02-23 22:58:25,408 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 40 states. [2021-02-23 22:58:31,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:58:31,479 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2021-02-23 22:58:31,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-02-23 22:58:31,480 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 143 [2021-02-23 22:58:31,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:58:31,482 INFO L225 Difference]: With dead ends: 103 [2021-02-23 22:58:31,482 INFO L226 Difference]: Without dead ends: 98 [2021-02-23 22:58:31,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=351, Invalid=8579, Unknown=0, NotChecked=0, Total=8930 [2021-02-23 22:58:31,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-02-23 22:58:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-02-23 22:58:31,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-02-23 22:58:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2021-02-23 22:58:31,496 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 143 [2021-02-23 22:58:31,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:58:31,496 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2021-02-23 22:58:31,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2021-02-23 22:58:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2021-02-23 22:58:31,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-02-23 22:58:31,498 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:58:31,498 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 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 22:58:31,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 22:58:31,498 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:58:31,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:58:31,499 INFO L82 PathProgramCache]: Analyzing trace with hash 95167309, now seen corresponding path program 18 times [2021-02-23 22:58:31,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:58:31,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616304083] [2021-02-23 22:58:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:58:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:31,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:31,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:31,576 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:58:31,577 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:58:31,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:31,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:58:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:31,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:31,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:58:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:31,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:31,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:31,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:31,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:31,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:31,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:31,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:31,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:31,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:31,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:31,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:31,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:31,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:31,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:31,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:31,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:32,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:32,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:32,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:32,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:32,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:32,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:32,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:32,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:32,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:32,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:32,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:32,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:32,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:32,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:32,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:32,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:32,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:32,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:32,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:32,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:32,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:32,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:32,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:32,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:33,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:33,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:33,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:33,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:33,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:33,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:33,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:33,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:33,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:33,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:33,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:33,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:33,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:33,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:33,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:33,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:33,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:33,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:33,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:33,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:33,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:33,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:33,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:33,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:33,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:33,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:33,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-02-23 22:58:33,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616304083] [2021-02-23 22:58:33,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:58:33,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2021-02-23 22:58:33,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422269086] [2021-02-23 22:58:33,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-02-23 22:58:33,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:58:33,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-02-23 22:58:33,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 22:58:33,610 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 42 states. [2021-02-23 22:58:40,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:58:40,043 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2021-02-23 22:58:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-02-23 22:58:40,044 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 150 [2021-02-23 22:58:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:58:40,046 INFO L225 Difference]: With dead ends: 107 [2021-02-23 22:58:40,046 INFO L226 Difference]: Without dead ends: 102 [2021-02-23 22:58:40,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1634 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=370, Invalid=9530, Unknown=0, NotChecked=0, Total=9900 [2021-02-23 22:58:40,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-02-23 22:58:40,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-02-23 22:58:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-02-23 22:58:40,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2021-02-23 22:58:40,064 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 150 [2021-02-23 22:58:40,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:58:40,064 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2021-02-23 22:58:40,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2021-02-23 22:58:40,065 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2021-02-23 22:58:40,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 22:58:40,066 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:58:40,066 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 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 22:58:40,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-23 22:58:40,067 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:58:40,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:58:40,067 INFO L82 PathProgramCache]: Analyzing trace with hash 2094764223, now seen corresponding path program 19 times [2021-02-23 22:58:40,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:58:40,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272154351] [2021-02-23 22:58:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:58:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:40,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:40,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,145 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:58:40,146 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:58:40,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:40,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:58:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:40,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:40,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:58:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:40,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:40,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:40,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:40,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:40,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:40,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:40,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:40,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:40,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:40,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:40,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:40,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:40,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:40,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:40,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:40,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:40,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:40,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:40,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:40,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:41,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:41,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:41,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:41,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:41,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:41,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:41,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:41,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:41,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:41,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:41,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:41,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:41,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:41,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:41,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:41,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:41,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:41,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:41,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:41,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:42,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:42,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:42,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:42,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:42,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:42,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:42,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:42,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:58:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:58:42,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:42,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:58:42,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:58:42,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:58:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2021-02-23 22:58:42,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272154351] [2021-02-23 22:58:42,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:58:42,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2021-02-23 22:58:42,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660797226] [2021-02-23 22:58:42,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-02-23 22:58:42,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:58:42,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-02-23 22:58:42,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2021-02-23 22:58:42,448 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 44 states. [2021-02-23 22:58:49,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:58:49,830 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2021-02-23 22:58:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-02-23 22:58:49,831 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 157 [2021-02-23 22:58:49,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:58:49,833 INFO L225 Difference]: With dead ends: 111 [2021-02-23 22:58:49,833 INFO L226 Difference]: Without dead ends: 106 [2021-02-23 22:58:49,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=389, Invalid=10531, Unknown=0, NotChecked=0, Total=10920 [2021-02-23 22:58:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-23 22:58:49,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-02-23 22:58:49,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-02-23 22:58:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2021-02-23 22:58:49,849 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 157 [2021-02-23 22:58:49,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:58:49,849 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2021-02-23 22:58:49,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2021-02-23 22:58:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2021-02-23 22:58:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-02-23 22:58:49,851 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:58:49,851 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 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 22:58:49,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-23 22:58:49,851 INFO L428 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:58:49,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:58:49,852 INFO L82 PathProgramCache]: Analyzing trace with hash -325411905, now seen corresponding path program 20 times [2021-02-23 22:58:49,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:58:49,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555909477] [2021-02-23 22:58:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:58:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:58:49,987 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:58:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:58:50,113 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:58:50,198 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:58:50,198 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:58:50,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-23 22:58:50,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:58:50 BoogieIcfgContainer [2021-02-23 22:58:50,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:58:50,355 INFO L168 Benchmark]: Toolchain (without parser) took 84894.25 ms. Allocated memory was 164.6 MB in the beginning and 425.7 MB in the end (delta: 261.1 MB). Free memory was 142.0 MB in the beginning and 263.1 MB in the end (delta: -121.1 MB). Peak memory consumption was 140.2 MB. Max. memory is 8.0 GB. [2021-02-23 22:58:50,355 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 164.6 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:58:50,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.21 ms. Allocated memory is still 164.6 MB. Free memory was 140.8 MB in the beginning and 131.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:58:50,356 INFO L168 Benchmark]: Boogie Preprocessor took 50.03 ms. Allocated memory is still 164.6 MB. Free memory was 131.0 MB in the beginning and 129.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:58:50,356 INFO L168 Benchmark]: RCFGBuilder took 649.01 ms. Allocated memory is still 164.6 MB. Free memory was 129.8 MB in the beginning and 116.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 22:58:50,356 INFO L168 Benchmark]: TraceAbstraction took 83872.15 ms. Allocated memory was 164.6 MB in the beginning and 425.7 MB in the end (delta: 261.1 MB). Free memory was 116.2 MB in the beginning and 263.1 MB in the end (delta: -146.9 MB). Peak memory consumption was 115.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:58:50,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 164.6 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 302.21 ms. Allocated memory is still 164.6 MB. Free memory was 140.8 MB in the beginning and 131.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.03 ms. Allocated memory is still 164.6 MB. Free memory was 131.0 MB in the beginning and 129.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 649.01 ms. Allocated memory is still 164.6 MB. Free memory was 129.8 MB in the beginning and 116.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 83872.15 ms. Allocated memory was 164.6 MB in the beginning and 425.7 MB in the end (delta: 261.1 MB). Free memory was 116.2 MB in the beginning and 263.1 MB in the end (delta: -146.9 MB). Peak memory consumption was 115.0 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] unsigned int input = __VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=20, input=20] [L13] CALL, EXPR id(input) 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] [L13] RET, EXPR id(input) VAL [id(input)=20, input=20] [L13] unsigned int result = id(input); VAL [id(input)=20, input=20, result=20] [L14] COND TRUE result == 20 VAL [input=20, result=20] [L15] reach_error() VAL [input=20, result=20] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 83.5s, OverallIterations: 21, TraceHistogramMax: 21, AutomataDifference: 61.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 865 SDtfs, 1106 SDslu, 6227 SDs, 0 SdLazy, 27368 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1590 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 1110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13020 ImplicationChecksByTransitivity, 50.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 20.3s InterpolantComputationTime, 1974 NumberOfCodeBlocks, 1974 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1790 ConstructedInterpolants, 0 QuantifiedInterpolants, 833890 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 1 PerfectInterpolantSequences, 3800/8740 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...