/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/eca-rers2012/Problem01_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:09:42,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:09:42,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:09:42,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 23:09:42,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:09:42,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:09:42,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:09:42,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:09:42,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:09:42,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:09:42,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:09:42,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:09:42,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:09:42,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:09:42,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:09:42,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:09:42,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 23:09:42,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:09:42,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:09:42,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:09:42,868 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 23:09:42,880 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:09:42,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:09:42,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:09:42,882 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:09:42,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:09:42,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:09:42,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:09:42,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:09:42,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:09:42,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:09:42,884 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:09:42,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:09:42,884 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:09:42,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:09:42,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:09:42,885 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:09:42,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:09:42,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:09:42,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:09:42,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:09:42,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:09:42,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:09:42,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:09:43,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:09:43,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:09:43,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:09:43,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:09:43,309 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:09:43,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2021-02-23 23:09:43,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d81df641/61efc41f0675447d9f499622a25c71ba/FLAG4d7d7f9b5 [2021-02-23 23:09:44,155 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:09:44,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2021-02-23 23:09:44,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d81df641/61efc41f0675447d9f499622a25c71ba/FLAG4d7d7f9b5 [2021-02-23 23:09:44,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d81df641/61efc41f0675447d9f499622a25c71ba [2021-02-23 23:09:44,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:09:44,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:09:44,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:09:44,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:09:44,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:09:44,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:09:44" (1/1) ... [2021-02-23 23:09:44,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e9b6864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:44, skipping insertion in model container [2021-02-23 23:09:44,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:09:44" (1/1) ... [2021-02-23 23:09:44,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:09:44,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:09:44,980 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c[19099,19112] [2021-02-23 23:09:45,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:09:45,029 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:09:45,141 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c[19099,19112] [2021-02-23 23:09:45,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:09:45,211 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:09:45,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:45 WrapperNode [2021-02-23 23:09:45,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:09:45,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:09:45,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:09:45,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:09:45,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:45" (1/1) ... [2021-02-23 23:09:45,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:45" (1/1) ... [2021-02-23 23:09:45,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:45" (1/1) ... [2021-02-23 23:09:45,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:45" (1/1) ... [2021-02-23 23:09:45,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:45" (1/1) ... [2021-02-23 23:09:45,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:45" (1/1) ... [2021-02-23 23:09:45,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:45" (1/1) ... [2021-02-23 23:09:45,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:09:45,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:09:45,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:09:45,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:09:45,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:45" (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 23:09:45,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:09:45,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:09:45,462 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:09:45,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-23 23:09:45,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:09:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-23 23:09:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:09:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:09:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:09:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:09:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:09:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 23:09:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:09:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:09:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:09:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:09:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:09:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:09:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:09:46,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:09:46,898 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 23:09:46,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:09:46 BoogieIcfgContainer [2021-02-23 23:09:46,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:09:46,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:09:46,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:09:46,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:09:46,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:09:44" (1/3) ... [2021-02-23 23:09:46,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4bfb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:09:46, skipping insertion in model container [2021-02-23 23:09:46,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:09:45" (2/3) ... [2021-02-23 23:09:46,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4bfb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:09:46, skipping insertion in model container [2021-02-23 23:09:46,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:09:46" (3/3) ... [2021-02-23 23:09:46,912 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2021-02-23 23:09:46,919 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:09:46,925 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:09:46,946 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:09:46,972 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:09:46,973 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:09:46,973 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:09:46,973 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:09:46,973 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:09:46,973 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:09:46,974 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:09:46,974 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:09:47,004 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states. [2021-02-23 23:09:47,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-02-23 23:09:47,032 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:47,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:09:47,034 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:47,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:47,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1152266589, now seen corresponding path program 1 times [2021-02-23 23:09:47,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:47,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733421106] [2021-02-23 23:09:47,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:47,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:47,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:47,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:47,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:47,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:47,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:47,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:47,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:47,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:47,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:47,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:47,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:47,971 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 23:09:47,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733421106] [2021-02-23 23:09:47,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:09:47,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:09:47,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225421191] [2021-02-23 23:09:47,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:09:47,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:47,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:09:47,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:09:47,998 INFO L87 Difference]: Start difference. First operand 534 states. Second operand 4 states. [2021-02-23 23:09:50,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:50,689 INFO L93 Difference]: Finished difference Result 1349 states and 1747 transitions. [2021-02-23 23:09:50,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 23:09:50,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2021-02-23 23:09:50,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:50,718 INFO L225 Difference]: With dead ends: 1349 [2021-02-23 23:09:50,719 INFO L226 Difference]: Without dead ends: 749 [2021-02-23 23:09:50,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 23:09:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-02-23 23:09:50,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 672. [2021-02-23 23:09:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2021-02-23 23:09:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 788 transitions. [2021-02-23 23:09:50,957 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 788 transitions. Word has length 145 [2021-02-23 23:09:50,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:50,958 INFO L480 AbstractCegarLoop]: Abstraction has 672 states and 788 transitions. [2021-02-23 23:09:50,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:09:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 788 transitions. [2021-02-23 23:09:50,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 23:09:50,967 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:50,968 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:09:50,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:09:50,968 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:50,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2096167395, now seen corresponding path program 1 times [2021-02-23 23:09:50,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:50,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123444004] [2021-02-23 23:09:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:51,231 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:09:51,235 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:09:51,249 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:09:51,250 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:09:51,253 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:09:51,254 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:09:51,271 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:09:51,274 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:09:51,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:51,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:51,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:51,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:51,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:51,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:51,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:51,425 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 23:09:51,427 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 23:09:51,438 WARN L141 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-02-23 23:09:51,439 WARN L147 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size 10 [2021-02-23 23:09:51,454 WARN L141 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-02-23 23:09:51,455 WARN L147 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size 13 [2021-02-23 23:09:51,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:09:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:51,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:51,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:51,494 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:09:51,495 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:09:51,497 WARN L141 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-02-23 23:09:51,497 WARN L147 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size 16 [2021-02-23 23:09:51,538 WARN L141 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-02-23 23:09:51,539 WARN L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-02-23 23:09:51,567 WARN L141 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-02-23 23:09:51,568 WARN L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-02-23 23:09:51,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:09:51,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123444004] [2021-02-23 23:09:51,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:09:51,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 23:09:51,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123055342] [2021-02-23 23:09:51,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:09:51,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:51,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:09:51,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:09:51,735 INFO L87 Difference]: Start difference. First operand 672 states and 788 transitions. Second operand 11 states. [2021-02-23 23:09:51,962 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-23 23:09:52,465 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 23:09:57,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:57,794 INFO L93 Difference]: Finished difference Result 2529 states and 3315 transitions. [2021-02-23 23:09:57,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 23:09:57,795 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 166 [2021-02-23 23:09:57,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:57,808 INFO L225 Difference]: With dead ends: 2529 [2021-02-23 23:09:57,808 INFO L226 Difference]: Without dead ends: 1479 [2021-02-23 23:09:57,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2021-02-23 23:09:57,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-02-23 23:09:58,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1247. [2021-02-23 23:09:58,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2021-02-23 23:09:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1476 transitions. [2021-02-23 23:09:58,123 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1476 transitions. Word has length 166 [2021-02-23 23:09:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:58,124 INFO L480 AbstractCegarLoop]: Abstraction has 1247 states and 1476 transitions. [2021-02-23 23:09:58,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:09:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1476 transitions. [2021-02-23 23:09:58,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-02-23 23:09:58,136 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:58,136 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:09:58,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:09:58,137 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:58,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:58,140 INFO L82 PathProgramCache]: Analyzing trace with hash -122859537, now seen corresponding path program 1 times [2021-02-23 23:09:58,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:58,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821729247] [2021-02-23 23:09:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:58,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:58,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:58,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:58,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:58,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:58,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:58,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:58,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:58,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:58,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:09:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:58,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:58,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:58,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:58,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:09:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 23:09:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:58,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:58,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:58,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:58,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 23:09:58,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821729247] [2021-02-23 23:09:58,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:09:58,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-23 23:09:58,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488918390] [2021-02-23 23:09:58,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:09:58,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:58,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:09:58,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:09:58,442 INFO L87 Difference]: Start difference. First operand 1247 states and 1476 transitions. Second operand 7 states. [2021-02-23 23:10:01,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:10:01,323 INFO L93 Difference]: Finished difference Result 3416 states and 4188 transitions. [2021-02-23 23:10:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 23:10:01,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2021-02-23 23:10:01,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:10:01,345 INFO L225 Difference]: With dead ends: 3416 [2021-02-23 23:10:01,345 INFO L226 Difference]: Without dead ends: 2201 [2021-02-23 23:10:01,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:10:01,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2021-02-23 23:10:01,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2135. [2021-02-23 23:10:01,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2021-02-23 23:10:01,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 2543 transitions. [2021-02-23 23:10:01,819 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 2543 transitions. Word has length 183 [2021-02-23 23:10:01,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:10:01,820 INFO L480 AbstractCegarLoop]: Abstraction has 2135 states and 2543 transitions. [2021-02-23 23:10:01,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:10:01,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 2543 transitions. [2021-02-23 23:10:01,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-02-23 23:10:01,829 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:10:01,830 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:10:01,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:10:01,831 INFO L428 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:10:01,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:10:01,831 INFO L82 PathProgramCache]: Analyzing trace with hash 2677426, now seen corresponding path program 1 times [2021-02-23 23:10:01,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:10:01,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654360299] [2021-02-23 23:10:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:10:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:01,981 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:10:01,982 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:10:01,989 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:10:01,990 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:10:01,991 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:10:01,991 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:10:01,997 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:10:01,999 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:10:02,017 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:10:02,018 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:10:02,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:02,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:02,140 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-02-23 23:10:02,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:10:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:02,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:02,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:02,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:02,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:10:02,169 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 23:10:02,169 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 23:10:02,180 WARN L141 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-02-23 23:10:02,180 WARN L147 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size 10 [2021-02-23 23:10:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:10:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:02,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:02,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:02,209 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:10:02,210 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:10:02,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 23:10:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:02,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:02,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:02,227 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:10:02,228 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:10:02,228 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:10:02,229 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:10:02,245 WARN L141 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-02-23 23:10:02,246 WARN L147 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size 16 [2021-02-23 23:10:02,267 WARN L141 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-02-23 23:10:02,268 WARN L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-02-23 23:10:02,290 WARN L141 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-02-23 23:10:02,291 WARN L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-02-23 23:10:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-23 23:10:02,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654360299] [2021-02-23 23:10:02,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:10:02,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 23:10:02,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160963687] [2021-02-23 23:10:02,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:10:02,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:10:02,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:10:02,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:10:02,504 INFO L87 Difference]: Start difference. First operand 2135 states and 2543 transitions. Second operand 11 states. [2021-02-23 23:10:03,312 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 23:10:03,938 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-23 23:10:08,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:10:08,541 INFO L93 Difference]: Finished difference Result 5597 states and 6812 transitions. [2021-02-23 23:10:08,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 23:10:08,541 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 194 [2021-02-23 23:10:08,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:10:08,569 INFO L225 Difference]: With dead ends: 5597 [2021-02-23 23:10:08,569 INFO L226 Difference]: Without dead ends: 3352 [2021-02-23 23:10:08,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2021-02-23 23:10:08,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2021-02-23 23:10:09,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 2873. [2021-02-23 23:10:09,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2021-02-23 23:10:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3340 transitions. [2021-02-23 23:10:09,247 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3340 transitions. Word has length 194 [2021-02-23 23:10:09,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:10:09,249 INFO L480 AbstractCegarLoop]: Abstraction has 2873 states and 3340 transitions. [2021-02-23 23:10:09,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:10:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3340 transitions. [2021-02-23 23:10:09,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-02-23 23:10:09,261 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:10:09,261 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:09,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:10:09,262 INFO L428 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:10:09,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:10:09,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1819440019, now seen corresponding path program 1 times [2021-02-23 23:10:09,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:10:09,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906943839] [2021-02-23 23:10:09,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:10:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:09,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:09,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:09,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:09,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:10:09,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:09,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:09,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:10:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:09,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:09,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:09,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:10:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:09,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:09,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 23:10:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:09,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:09,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:09,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:09,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:10:09,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-02-23 23:10:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:09,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:09,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:10:09,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:09,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:10:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-23 23:10:09,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906943839] [2021-02-23 23:10:09,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:10:09,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-23 23:10:09,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621453426] [2021-02-23 23:10:09,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:10:09,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:10:09,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:10:09,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:10:09,654 INFO L87 Difference]: Start difference. First operand 2873 states and 3340 transitions. Second operand 7 states. [2021-02-23 23:10:10,177 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-02-23 23:10:13,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:10:13,080 INFO L93 Difference]: Finished difference Result 6615 states and 7849 transitions. [2021-02-23 23:10:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 23:10:13,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2021-02-23 23:10:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:10:13,115 INFO L225 Difference]: With dead ends: 6615 [2021-02-23 23:10:13,115 INFO L226 Difference]: Without dead ends: 3915 [2021-02-23 23:10:13,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:10:13,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3915 states. [2021-02-23 23:10:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3915 to 3687. [2021-02-23 23:10:13,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2021-02-23 23:10:13,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 4335 transitions. [2021-02-23 23:10:13,910 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 4335 transitions. Word has length 217 [2021-02-23 23:10:13,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:10:13,910 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 4335 transitions. [2021-02-23 23:10:13,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:10:13,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 4335 transitions. [2021-02-23 23:10:13,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-02-23 23:10:13,923 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:10:13,924 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:10:13,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:10:13,924 INFO L428 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:10:13,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:10:13,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1995777622, now seen corresponding path program 1 times [2021-02-23 23:10:13,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:10:13,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615245762] [2021-02-23 23:10:13,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:10:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:13,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:13,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:10:13,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:13,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:10:13,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:13,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:10:14,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:14,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:14,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:10:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:14,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:14,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:14,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:14,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:10:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:10:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:14,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:14,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:14,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:14,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:10:14,113 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:14,114 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:14,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 23:10:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:14,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:14,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:10:14,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:14,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:10:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 23:10:14,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615245762] [2021-02-23 23:10:14,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:10:14,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-23 23:10:14,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102862815] [2021-02-23 23:10:14,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:10:14,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:10:14,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:10:14,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:10:14,252 INFO L87 Difference]: Start difference. First operand 3687 states and 4335 transitions. Second operand 8 states. [2021-02-23 23:10:15,667 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-02-23 23:10:18,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:10:18,279 INFO L93 Difference]: Finished difference Result 7607 states and 9001 transitions. [2021-02-23 23:10:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 23:10:18,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 229 [2021-02-23 23:10:18,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:10:18,315 INFO L225 Difference]: With dead ends: 7607 [2021-02-23 23:10:18,315 INFO L226 Difference]: Without dead ends: 4093 [2021-02-23 23:10:18,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 23:10:18,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2021-02-23 23:10:19,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 3997. [2021-02-23 23:10:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2021-02-23 23:10:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 4688 transitions. [2021-02-23 23:10:19,023 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 4688 transitions. Word has length 229 [2021-02-23 23:10:19,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:10:19,024 INFO L480 AbstractCegarLoop]: Abstraction has 3997 states and 4688 transitions. [2021-02-23 23:10:19,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:10:19,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 4688 transitions. [2021-02-23 23:10:19,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-02-23 23:10:19,038 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:10:19,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:19,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:10:19,039 INFO L428 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:10:19,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:10:19,040 INFO L82 PathProgramCache]: Analyzing trace with hash -182143504, now seen corresponding path program 1 times [2021-02-23 23:10:19,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:10:19,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876977104] [2021-02-23 23:10:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:10:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:19,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:19,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:19,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:19,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:10:19,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:19,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:19,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:10:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:19,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:19,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:19,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:10:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:19,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:19,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:19,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:19,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:10:19,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-23 23:10:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:19,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:19,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:10:19,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:19,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:10:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 23:10:19,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876977104] [2021-02-23 23:10:19,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:10:19,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-23 23:10:19,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495972183] [2021-02-23 23:10:19,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:10:19,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:10:19,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:10:19,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:10:19,318 INFO L87 Difference]: Start difference. First operand 3997 states and 4688 transitions. Second operand 7 states. [2021-02-23 23:10:22,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:10:22,105 INFO L93 Difference]: Finished difference Result 8001 states and 9367 transitions. [2021-02-23 23:10:22,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 23:10:22,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2021-02-23 23:10:22,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:10:22,132 INFO L225 Difference]: With dead ends: 8001 [2021-02-23 23:10:22,132 INFO L226 Difference]: Without dead ends: 4020 [2021-02-23 23:10:22,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:10:22,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4020 states. [2021-02-23 23:10:23,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4020 to 3967. [2021-02-23 23:10:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3967 states. [2021-02-23 23:10:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3967 states to 3967 states and 4465 transitions. [2021-02-23 23:10:23,062 INFO L78 Accepts]: Start accepts. Automaton has 3967 states and 4465 transitions. Word has length 243 [2021-02-23 23:10:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:10:23,062 INFO L480 AbstractCegarLoop]: Abstraction has 3967 states and 4465 transitions. [2021-02-23 23:10:23,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:10:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3967 states and 4465 transitions. [2021-02-23 23:10:23,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-02-23 23:10:23,078 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:10:23,078 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:10:23,079 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 23:10:23,079 INFO L428 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:10:23,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:10:23,079 INFO L82 PathProgramCache]: Analyzing trace with hash 675117420, now seen corresponding path program 1 times [2021-02-23 23:10:23,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:10:23,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075329938] [2021-02-23 23:10:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:10:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:23,220 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:23,221 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:23,227 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:23,228 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:23,229 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:23,230 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:23,230 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:23,231 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:23,232 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:10:23,233 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:10:23,249 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:10:23,250 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:10:23,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:23,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:23,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:10:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:23,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:23,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:23,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:23,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:10:23,355 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 23:10:23,356 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 23:10:23,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:10:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:23,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:23,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:23,379 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:23,379 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:23,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 23:10:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:23,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:23,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:23,402 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:23,403 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:23,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-02-23 23:10:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:23,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:23,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:23,415 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:23,416 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:23,417 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:10:23,417 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:10:23,429 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-23 23:10:23,429 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-23 23:10:23,444 WARN L141 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-02-23 23:10:23,444 WARN L147 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size 16 [2021-02-23 23:10:23,461 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-23 23:10:23,462 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-23 23:10:23,485 WARN L141 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-02-23 23:10:23,486 WARN L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-02-23 23:10:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 82 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-02-23 23:10:23,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075329938] [2021-02-23 23:10:23,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:10:23,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 23:10:23,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134129787] [2021-02-23 23:10:23,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:10:23,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:10:23,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:10:23,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:10:23,660 INFO L87 Difference]: Start difference. First operand 3967 states and 4465 transitions. Second operand 11 states. [2021-02-23 23:10:25,049 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-23 23:10:25,300 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 23:10:25,965 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 23:10:28,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:10:28,441 INFO L93 Difference]: Finished difference Result 8876 states and 10173 transitions. [2021-02-23 23:10:28,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 23:10:28,442 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2021-02-23 23:10:28,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:10:28,471 INFO L225 Difference]: With dead ends: 8876 [2021-02-23 23:10:28,471 INFO L226 Difference]: Without dead ends: 4809 [2021-02-23 23:10:28,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:10:28,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4809 states. [2021-02-23 23:10:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4809 to 4205. [2021-02-23 23:10:29,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4205 states. [2021-02-23 23:10:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 4679 transitions. [2021-02-23 23:10:29,226 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 4679 transitions. Word has length 246 [2021-02-23 23:10:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:10:29,227 INFO L480 AbstractCegarLoop]: Abstraction has 4205 states and 4679 transitions. [2021-02-23 23:10:29,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:10:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 4679 transitions. [2021-02-23 23:10:29,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-02-23 23:10:29,240 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:10:29,240 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:29,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 23:10:29,241 INFO L428 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:10:29,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:10:29,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1015337457, now seen corresponding path program 1 times [2021-02-23 23:10:29,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:10:29,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52708340] [2021-02-23 23:10:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:10:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:29,365 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:10:29,366 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:10:29,373 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:10:29,374 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:10:29,375 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:10:29,376 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:10:29,385 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:10:29,386 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:10:29,402 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:10:29,403 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:10:29,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:29,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:29,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:10:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:29,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:29,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:29,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:29,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:10:29,501 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 23:10:29,502 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 23:10:29,513 WARN L141 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-02-23 23:10:29,513 WARN L147 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size 10 [2021-02-23 23:10:29,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:10:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:29,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:29,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:29,561 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:10:29,561 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:10:29,564 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-23 23:10:29,564 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-23 23:10:29,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-23 23:10:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:29,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:29,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:29,584 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:10:29,585 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:10:29,586 WARN L141 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-02-23 23:10:29,587 WARN L147 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size 16 [2021-02-23 23:10:29,603 WARN L141 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-02-23 23:10:29,604 WARN L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-02-23 23:10:29,624 WARN L141 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size [2021-02-23 23:10:29,624 WARN L147 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size 22 [2021-02-23 23:10:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-23 23:10:29,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52708340] [2021-02-23 23:10:29,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:10:29,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 23:10:29,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010748171] [2021-02-23 23:10:29,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:10:29,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:10:29,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:10:29,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:10:29,806 INFO L87 Difference]: Start difference. First operand 4205 states and 4679 transitions. Second operand 11 states. [2021-02-23 23:10:30,805 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 23:10:31,701 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 23:10:31,829 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-02-23 23:10:32,523 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 23:10:33,024 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-23 23:10:36,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:10:36,698 INFO L93 Difference]: Finished difference Result 11308 states and 12751 transitions. [2021-02-23 23:10:36,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 23:10:36,699 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 249 [2021-02-23 23:10:36,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:10:36,736 INFO L225 Difference]: With dead ends: 11308 [2021-02-23 23:10:36,736 INFO L226 Difference]: Without dead ends: 6570 [2021-02-23 23:10:36,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-02-23 23:10:36,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6570 states. [2021-02-23 23:10:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6570 to 5838. [2021-02-23 23:10:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5838 states. [2021-02-23 23:10:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5838 states to 5838 states and 6397 transitions. [2021-02-23 23:10:37,937 INFO L78 Accepts]: Start accepts. Automaton has 5838 states and 6397 transitions. Word has length 249 [2021-02-23 23:10:37,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:10:37,938 INFO L480 AbstractCegarLoop]: Abstraction has 5838 states and 6397 transitions. [2021-02-23 23:10:37,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:10:37,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5838 states and 6397 transitions. [2021-02-23 23:10:37,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-02-23 23:10:37,954 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:10:37,954 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:10:37,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 23:10:37,955 INFO L428 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:10:37,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:10:37,956 INFO L82 PathProgramCache]: Analyzing trace with hash -709358191, now seen corresponding path program 1 times [2021-02-23 23:10:37,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:10:37,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793622410] [2021-02-23 23:10:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:10:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:38,054 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:10:38,055 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:10:38,063 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:10:38,064 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:10:38,065 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size [2021-02-23 23:10:38,066 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-02-23 23:10:38,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:38,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:10:38,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:38,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:38,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:10:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:38,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:38,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:38,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:38,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:10:38,195 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:38,196 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:38,207 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-23 23:10:38,208 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-23 23:10:38,223 WARN L141 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-02-23 23:10:38,226 WARN L147 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size 13 [2021-02-23 23:10:38,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:10:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:38,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:38,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:10:38,269 WARN L141 QuantifierPusher]: treesize reduction 2, result has 90.9 percent of original size [2021-02-23 23:10:38,271 WARN L147 QuantifierPusher]: treesize reduction 2, result has 90.9 percent of original size 20 [2021-02-23 23:10:38,293 WARN L141 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size [2021-02-23 23:10:38,294 WARN L147 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size 23 [2021-02-23 23:10:38,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 23:10:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:38,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:38,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:38,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:38,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:10:38,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-02-23 23:10:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:38,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:38,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:10:38,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:38,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:10:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 165 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-23 23:10:38,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793622410] [2021-02-23 23:10:38,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:10:38,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-02-23 23:10:38,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572836286] [2021-02-23 23:10:38,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 23:10:38,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:10:38,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 23:10:38,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:10:38,603 INFO L87 Difference]: Start difference. First operand 5838 states and 6397 transitions. Second operand 16 states. [2021-02-23 23:10:39,124 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2021-02-23 23:10:39,605 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2021-02-23 23:10:40,171 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 23:10:40,683 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2021-02-23 23:10:40,852 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-23 23:10:41,123 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 23:10:41,505 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-23 23:10:43,075 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-23 23:10:43,565 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2021-02-23 23:10:43,865 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2021-02-23 23:10:44,354 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-23 23:10:44,550 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 23:10:45,931 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-23 23:10:47,438 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2021-02-23 23:10:50,096 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-02-23 23:10:51,177 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2021-02-23 23:10:51,787 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2021-02-23 23:10:52,296 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2021-02-23 23:10:53,542 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2021-02-23 23:10:55,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:10:55,604 INFO L93 Difference]: Finished difference Result 14089 states and 15557 transitions. [2021-02-23 23:10:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-02-23 23:10:55,604 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 287 [2021-02-23 23:10:55,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:10:55,646 INFO L225 Difference]: With dead ends: 14089 [2021-02-23 23:10:55,646 INFO L226 Difference]: Without dead ends: 8424 [2021-02-23 23:10:55,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2285 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1096, Invalid=5546, Unknown=0, NotChecked=0, Total=6642 [2021-02-23 23:10:55,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8424 states. [2021-02-23 23:10:56,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8424 to 7158. [2021-02-23 23:10:56,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7158 states. [2021-02-23 23:10:56,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7158 states to 7158 states and 7808 transitions. [2021-02-23 23:10:56,907 INFO L78 Accepts]: Start accepts. Automaton has 7158 states and 7808 transitions. Word has length 287 [2021-02-23 23:10:56,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:10:56,908 INFO L480 AbstractCegarLoop]: Abstraction has 7158 states and 7808 transitions. [2021-02-23 23:10:56,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 23:10:56,908 INFO L276 IsEmpty]: Start isEmpty. Operand 7158 states and 7808 transitions. [2021-02-23 23:10:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-02-23 23:10:56,925 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:10:56,926 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:56,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 23:10:56,926 INFO L428 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:10:56,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:10:56,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1115353070, now seen corresponding path program 1 times [2021-02-23 23:10:56,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:10:56,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745260483] [2021-02-23 23:10:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:10:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:57,196 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:57,197 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:57,206 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:57,206 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:57,207 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:57,208 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:57,209 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:10:57,210 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:10:57,220 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:10:57,221 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:10:57,237 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:10:57,238 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:10:57,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:57,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:57,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:10:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:57,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:57,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:57,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:57,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:10:57,339 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 23:10:57,340 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 23:10:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:10:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:57,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:57,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:57,376 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:57,377 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:57,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 23:10:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:57,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:57,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:57,400 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:10:57,401 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:10:57,401 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-23 23:10:57,402 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-23 23:10:57,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 23:10:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:10:57,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:10:57,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:10:57,425 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:10:57,425 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:10:57,426 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:10:57,426 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:10:57,441 WARN L141 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-02-23 23:10:57,442 WARN L147 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size 16 [2021-02-23 23:10:57,459 WARN L141 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-02-23 23:10:57,461 WARN L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-02-23 23:10:57,482 WARN L141 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size [2021-02-23 23:10:57,483 WARN L147 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size 22 [2021-02-23 23:10:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 143 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-02-23 23:10:57,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745260483] [2021-02-23 23:10:57,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:10:57,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 23:10:57,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600651392] [2021-02-23 23:10:57,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:10:57,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:10:57,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:10:57,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:10:57,754 INFO L87 Difference]: Start difference. First operand 7158 states and 7808 transitions. Second operand 11 states. [2021-02-23 23:10:58,469 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-23 23:10:59,694 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 23:11:00,227 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 23:11:00,402 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 23:11:03,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:11:03,617 INFO L93 Difference]: Finished difference Result 14467 states and 15716 transitions. [2021-02-23 23:11:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 23:11:03,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 289 [2021-02-23 23:11:03,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:11:03,655 INFO L225 Difference]: With dead ends: 14467 [2021-02-23 23:11:03,655 INFO L226 Difference]: Without dead ends: 7610 [2021-02-23 23:11:03,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2021-02-23 23:11:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7610 states. [2021-02-23 23:11:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7610 to 7143. [2021-02-23 23:11:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7143 states. [2021-02-23 23:11:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7143 states to 7143 states and 7750 transitions. [2021-02-23 23:11:05,175 INFO L78 Accepts]: Start accepts. Automaton has 7143 states and 7750 transitions. Word has length 289 [2021-02-23 23:11:05,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:11:05,176 INFO L480 AbstractCegarLoop]: Abstraction has 7143 states and 7750 transitions. [2021-02-23 23:11:05,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:11:05,176 INFO L276 IsEmpty]: Start isEmpty. Operand 7143 states and 7750 transitions. [2021-02-23 23:11:05,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-02-23 23:11:05,191 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:11:05,191 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:11:05,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 23:11:05,191 INFO L428 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:11:05,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:11:05,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1604240684, now seen corresponding path program 1 times [2021-02-23 23:11:05,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:11:05,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601636441] [2021-02-23 23:11:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:11:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:05,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:05,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:11:05,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:05,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:11:05,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:05,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:05,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:05,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:11:05,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:05,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:05,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:11:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:05,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:05,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:05,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:05,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:11:05,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:11:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:05,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:05,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:05,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 23:11:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:05,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:05,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:05,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:05,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:11:05,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:05,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:11:05,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 23:11:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:05,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:05,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:11:05,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:05,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:11:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 212 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-02-23 23:11:05,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601636441] [2021-02-23 23:11:05,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:11:05,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-23 23:11:05,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785147864] [2021-02-23 23:11:05,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 23:11:05,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:11:05,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 23:11:05,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:11:05,618 INFO L87 Difference]: Start difference. First operand 7143 states and 7750 transitions. Second operand 10 states. [2021-02-23 23:11:05,951 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-23 23:11:06,860 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2021-02-23 23:11:08,414 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 23:11:08,746 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2021-02-23 23:11:10,644 WARN L202 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2021-02-23 23:11:11,024 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2021-02-23 23:11:13,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:11:13,372 INFO L93 Difference]: Finished difference Result 14614 states and 15877 transitions. [2021-02-23 23:11:13,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-23 23:11:13,375 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 305 [2021-02-23 23:11:13,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:11:13,414 INFO L225 Difference]: With dead ends: 14614 [2021-02-23 23:11:13,414 INFO L226 Difference]: Without dead ends: 7649 [2021-02-23 23:11:13,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=303, Invalid=1179, Unknown=0, NotChecked=0, Total=1482 [2021-02-23 23:11:13,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2021-02-23 23:11:14,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 6705. [2021-02-23 23:11:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6705 states. [2021-02-23 23:11:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6705 states to 6705 states and 7143 transitions. [2021-02-23 23:11:14,949 INFO L78 Accepts]: Start accepts. Automaton has 6705 states and 7143 transitions. Word has length 305 [2021-02-23 23:11:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:11:14,949 INFO L480 AbstractCegarLoop]: Abstraction has 6705 states and 7143 transitions. [2021-02-23 23:11:14,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 23:11:14,949 INFO L276 IsEmpty]: Start isEmpty. Operand 6705 states and 7143 transitions. [2021-02-23 23:11:14,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-02-23 23:11:14,962 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:11:14,962 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:11:14,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 23:11:14,962 INFO L428 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:11:14,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:11:14,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1718906176, now seen corresponding path program 1 times [2021-02-23 23:11:14,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:11:14,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215369193] [2021-02-23 23:11:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:11:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:15,090 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:15,090 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:15,096 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:15,097 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:15,097 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:15,098 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:15,099 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:15,099 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:15,100 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:11:15,102 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:11:15,119 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:11:15,120 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:11:15,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:15,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:15,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:11:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:15,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:15,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:15,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:15,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:11:15,222 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 23:11:15,222 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 23:11:15,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:11:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:15,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:15,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:15,257 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:15,257 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:15,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 23:11:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:15,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:15,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:15,277 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:15,277 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:15,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 23:11:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:15,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:15,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:15,305 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:15,305 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:15,306 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-23 23:11:15,306 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-23 23:11:15,318 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-23 23:11:15,319 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-23 23:11:15,335 WARN L141 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-02-23 23:11:15,335 WARN L147 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size 16 [2021-02-23 23:11:15,353 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-23 23:11:15,354 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-23 23:11:15,376 WARN L141 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-02-23 23:11:15,376 WARN L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-02-23 23:11:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-02-23 23:11:15,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215369193] [2021-02-23 23:11:15,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:11:15,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 23:11:15,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275467631] [2021-02-23 23:11:15,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:11:15,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:11:15,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:11:15,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:11:15,671 INFO L87 Difference]: Start difference. First operand 6705 states and 7143 transitions. Second operand 11 states. [2021-02-23 23:11:15,869 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-02-23 23:11:16,561 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-23 23:11:17,259 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 23:11:18,637 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 23:11:19,057 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 23:11:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:11:22,026 INFO L93 Difference]: Finished difference Result 13862 states and 14736 transitions. [2021-02-23 23:11:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 23:11:22,027 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 311 [2021-02-23 23:11:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:11:22,061 INFO L225 Difference]: With dead ends: 13862 [2021-02-23 23:11:22,062 INFO L226 Difference]: Without dead ends: 7432 [2021-02-23 23:11:22,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2021-02-23 23:11:22,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7432 states. [2021-02-23 23:11:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7432 to 6682. [2021-02-23 23:11:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6682 states. [2021-02-23 23:11:23,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6682 states to 6682 states and 7101 transitions. [2021-02-23 23:11:23,324 INFO L78 Accepts]: Start accepts. Automaton has 6682 states and 7101 transitions. Word has length 311 [2021-02-23 23:11:23,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:11:23,325 INFO L480 AbstractCegarLoop]: Abstraction has 6682 states and 7101 transitions. [2021-02-23 23:11:23,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:11:23,325 INFO L276 IsEmpty]: Start isEmpty. Operand 6682 states and 7101 transitions. [2021-02-23 23:11:23,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-02-23 23:11:23,338 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:11:23,339 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:11:23,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 23:11:23,339 INFO L428 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:11:23,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:11:23,340 INFO L82 PathProgramCache]: Analyzing trace with hash 613142283, now seen corresponding path program 1 times [2021-02-23 23:11:23,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:11:23,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041389292] [2021-02-23 23:11:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:11:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:23,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:11:23,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:11:23,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:23,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:11:23,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:23,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:11:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:23,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:23,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:11:23,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:11:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:23,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:23,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 23:11:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:23,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:23,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 23:11:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:23,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:23,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:11:23,580 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:23,581 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:23,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-02-23 23:11:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:23,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:11:23,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:11:23,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-02-23 23:11:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:23,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:23,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 239 proven. 35 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-02-23 23:11:23,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041389292] [2021-02-23 23:11:23,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:11:23,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-23 23:11:23,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603140158] [2021-02-23 23:11:23,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 23:11:23,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:11:23,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 23:11:23,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:11:23,751 INFO L87 Difference]: Start difference. First operand 6682 states and 7101 transitions. Second operand 10 states. [2021-02-23 23:11:24,176 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2021-02-23 23:11:24,821 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-23 23:11:25,147 WARN L202 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 23:11:26,714 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-23 23:11:27,279 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-02-23 23:11:29,449 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-02-23 23:11:30,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:11:30,260 INFO L93 Difference]: Finished difference Result 13953 states and 14882 transitions. [2021-02-23 23:11:30,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-23 23:11:30,261 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 339 [2021-02-23 23:11:30,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:11:30,290 INFO L225 Difference]: With dead ends: 13953 [2021-02-23 23:11:30,290 INFO L226 Difference]: Without dead ends: 7449 [2021-02-23 23:11:30,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2021-02-23 23:11:30,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7449 states. [2021-02-23 23:11:31,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7449 to 6646. [2021-02-23 23:11:31,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6646 states. [2021-02-23 23:11:31,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6646 states to 6646 states and 7028 transitions. [2021-02-23 23:11:31,706 INFO L78 Accepts]: Start accepts. Automaton has 6646 states and 7028 transitions. Word has length 339 [2021-02-23 23:11:31,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:11:31,706 INFO L480 AbstractCegarLoop]: Abstraction has 6646 states and 7028 transitions. [2021-02-23 23:11:31,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 23:11:31,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6646 states and 7028 transitions. [2021-02-23 23:11:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-02-23 23:11:31,720 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:11:31,720 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:11:31,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 23:11:31,721 INFO L428 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:11:31,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:11:31,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1878576594, now seen corresponding path program 1 times [2021-02-23 23:11:31,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:11:31,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531696054] [2021-02-23 23:11:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:11:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:31,852 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:31,853 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:31,859 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:31,859 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:31,860 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:31,860 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:31,861 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:11:31,861 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:11:31,869 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:11:31,870 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:11:31,886 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:11:31,887 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:11:31,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:31,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:31,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:11:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:31,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:31,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:31,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:31,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:11:31,981 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 23:11:31,982 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 23:11:31,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:11:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:32,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:32,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:32,022 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:32,022 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:32,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-23 23:11:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:32,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:32,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:32,045 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:32,045 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:32,046 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:11:32,046 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:11:32,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-23 23:11:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:32,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:32,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:32,073 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:11:32,073 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:11:32,074 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-23 23:11:32,074 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-23 23:11:32,089 WARN L141 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-02-23 23:11:32,089 WARN L147 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size 16 [2021-02-23 23:11:32,106 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-23 23:11:32,107 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-23 23:11:32,128 WARN L141 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-02-23 23:11:32,128 WARN L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-02-23 23:11:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 200 proven. 3 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-02-23 23:11:32,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531696054] [2021-02-23 23:11:32,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:11:32,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 23:11:32,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348085411] [2021-02-23 23:11:32,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:11:32,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:11:32,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:11:32,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:11:32,531 INFO L87 Difference]: Start difference. First operand 6646 states and 7028 transitions. Second operand 11 states. [2021-02-23 23:11:32,869 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-23 23:11:35,531 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 23:11:35,697 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-23 23:11:37,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:11:37,857 INFO L93 Difference]: Finished difference Result 12782 states and 13483 transitions. [2021-02-23 23:11:37,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 23:11:37,857 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 346 [2021-02-23 23:11:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:11:37,879 INFO L225 Difference]: With dead ends: 12782 [2021-02-23 23:11:37,880 INFO L226 Difference]: Without dead ends: 6506 [2021-02-23 23:11:37,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:11:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6506 states. [2021-02-23 23:11:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6506 to 6477. [2021-02-23 23:11:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6477 states. [2021-02-23 23:11:39,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6477 states to 6477 states and 6838 transitions. [2021-02-23 23:11:39,490 INFO L78 Accepts]: Start accepts. Automaton has 6477 states and 6838 transitions. Word has length 346 [2021-02-23 23:11:39,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:11:39,491 INFO L480 AbstractCegarLoop]: Abstraction has 6477 states and 6838 transitions. [2021-02-23 23:11:39,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:11:39,491 INFO L276 IsEmpty]: Start isEmpty. Operand 6477 states and 6838 transitions. [2021-02-23 23:11:39,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-02-23 23:11:39,498 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:11:39,498 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:11:39,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 23:11:39,498 INFO L428 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:11:39,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:11:39,499 INFO L82 PathProgramCache]: Analyzing trace with hash 154223490, now seen corresponding path program 1 times [2021-02-23 23:11:39,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:11:39,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143654651] [2021-02-23 23:11:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:11:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:39,605 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:11:39,606 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:11:39,614 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:11:39,615 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:11:39,616 WARN L141 QuantifierPusher]: treesize reduction 2, result has 92.3 percent of original size [2021-02-23 23:11:39,616 WARN L147 QuantifierPusher]: treesize reduction 2, result has 92.3 percent of original size 24 [2021-02-23 23:11:39,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:39,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:11:39,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:39,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:11:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:39,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:39,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:11:39,741 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:11:39,742 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:11:39,753 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-23 23:11:39,754 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-23 23:11:39,768 WARN L141 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-02-23 23:11:39,769 WARN L147 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size 13 [2021-02-23 23:11:39,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:11:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:39,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:39,811 WARN L141 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size [2021-02-23 23:11:39,812 WARN L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-02-23 23:11:39,829 WARN L141 QuantifierPusher]: treesize reduction 2, result has 90.9 percent of original size [2021-02-23 23:11:39,829 WARN L147 QuantifierPusher]: treesize reduction 2, result has 90.9 percent of original size 20 [2021-02-23 23:11:39,849 WARN L141 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size [2021-02-23 23:11:39,849 WARN L147 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size 23 [2021-02-23 23:11:39,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-23 23:11:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:39,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:39,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-23 23:11:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:39,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:39,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 23:11:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:39,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:39,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-02-23 23:11:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:39,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:39,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:11:39,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:11:39,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-02-23 23:11:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:39,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:11:39,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:39,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:11:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 299 proven. 87 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-02-23 23:11:40,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143654651] [2021-02-23 23:11:40,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:11:40,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-02-23 23:11:40,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310397460] [2021-02-23 23:11:40,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 23:11:40,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:11:40,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 23:11:40,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-02-23 23:11:40,201 INFO L87 Difference]: Start difference. First operand 6477 states and 6838 transitions. Second operand 17 states. [2021-02-23 23:11:40,684 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2021-02-23 23:11:41,628 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2021-02-23 23:11:42,001 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 23:11:42,529 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2021-02-23 23:11:43,454 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-23 23:11:43,644 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-23 23:11:43,928 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2021-02-23 23:11:44,886 WARN L202 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2021-02-23 23:11:46,687 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2021-02-23 23:11:47,005 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2021-02-23 23:11:47,223 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 23:11:48,001 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2021-02-23 23:11:49,326 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 23:11:49,473 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 23:11:51,738 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2021-02-23 23:11:51,969 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 23:11:53,077 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-02-23 23:11:53,510 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 23:11:54,244 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2021-02-23 23:11:54,870 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2021-02-23 23:11:55,458 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2021-02-23 23:11:56,335 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-23 23:11:58,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:11:58,181 INFO L93 Difference]: Finished difference Result 14756 states and 15609 transitions. [2021-02-23 23:11:58,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-02-23 23:11:58,182 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 393 [2021-02-23 23:11:58,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:11:58,212 INFO L225 Difference]: With dead ends: 14756 [2021-02-23 23:11:58,212 INFO L226 Difference]: Without dead ends: 8457 [2021-02-23 23:11:58,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3125 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1114, Invalid=7442, Unknown=0, NotChecked=0, Total=8556 [2021-02-23 23:11:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8457 states. [2021-02-23 23:11:59,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8457 to 6612. [2021-02-23 23:11:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6612 states. [2021-02-23 23:11:59,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6612 states to 6612 states and 6955 transitions. [2021-02-23 23:11:59,623 INFO L78 Accepts]: Start accepts. Automaton has 6612 states and 6955 transitions. Word has length 393 [2021-02-23 23:11:59,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:11:59,623 INFO L480 AbstractCegarLoop]: Abstraction has 6612 states and 6955 transitions. [2021-02-23 23:11:59,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 23:11:59,623 INFO L276 IsEmpty]: Start isEmpty. Operand 6612 states and 6955 transitions. [2021-02-23 23:11:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-02-23 23:11:59,631 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:11:59,631 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:11:59,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 23:11:59,632 INFO L428 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:11:59,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:11:59,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1346760511, now seen corresponding path program 1 times [2021-02-23 23:11:59,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:11:59,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747446917] [2021-02-23 23:11:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:11:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:59,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:59,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:11:59,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:59,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:11:59,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:59,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:59,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:59,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:11:59,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:59,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:11:59,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:59,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:11:59,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:59,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:11:59,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:59,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:59,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:11:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:59,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:59,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:59,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:59,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:11:59,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:11:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:59,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:59,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:11:59,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-23 23:11:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:11:59,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:11:59,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:12:00,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-23 23:12:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:12:00,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:12:00,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:12:00,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 23:12:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:12:00,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:12:00,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:12:00,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:12:00,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:12:00,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-02-23 23:12:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:12:00,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:12:00,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:12:00,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:12:00,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:12:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-02-23 23:12:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:12:00,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:12:00,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:12:00,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:12:00,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:12:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 275 proven. 52 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-02-23 23:12:00,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747446917] [2021-02-23 23:12:00,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:12:00,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-23 23:12:00,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517392892] [2021-02-23 23:12:00,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:12:00,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:12:00,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:12:00,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:12:00,245 INFO L87 Difference]: Start difference. First operand 6612 states and 6955 transitions. Second operand 7 states. [2021-02-23 23:12:03,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:12:03,413 INFO L93 Difference]: Finished difference Result 12798 states and 13428 transitions. [2021-02-23 23:12:03,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 23:12:03,414 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 413 [2021-02-23 23:12:03,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:12:03,420 INFO L225 Difference]: With dead ends: 12798 [2021-02-23 23:12:03,420 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 23:12:03,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:12:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 23:12:03,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 23:12:03,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 23:12:03,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 23:12:03,441 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 413 [2021-02-23 23:12:03,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:12:03,442 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 23:12:03,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:12:03,442 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 23:12:03,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 23:12:03,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 23:12:03,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 23:12:04,088 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-02-23 23:12:14,120 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 121 [2021-02-23 23:12:14,229 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 121 [2021-02-23 23:12:14,530 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 121 [2021-02-23 23:12:22,109 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 270 [2021-02-23 23:12:59,199 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 110 [2021-02-23 23:12:59,330 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2021-02-23 23:12:59,462 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2021-02-23 23:12:59,931 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 131 [2021-02-23 23:13:00,050 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 131 [2021-02-23 23:13:00,193 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2021-02-23 23:13:00,305 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 131 [2021-02-23 23:13:00,441 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2021-02-23 23:13:00,659 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 131 [2021-02-23 23:13:00,788 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 131 [2021-02-23 23:13:00,915 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2021-02-23 23:13:01,041 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2021-02-23 23:13:01,156 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 131 [2021-02-23 23:13:01,289 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2021-02-23 23:13:01,420 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2021-02-23 23:13:01,545 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2021-02-23 23:13:01,768 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2021-02-23 23:13:01,896 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2021-02-23 23:13:02,021 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2021-02-23 23:13:44,369 WARN L202 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 270 [2021-02-23 23:13:51,137 WARN L202 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 270 [2021-02-23 23:13:52,283 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 270 [2021-02-23 23:13:53,034 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 270 [2021-02-23 23:14:46,761 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 143 [2021-02-23 23:15:20,604 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 270 [2021-02-23 23:15:20,796 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 270 [2021-02-23 23:15:20,991 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 270 [2021-02-23 23:15:21,182 WARN L202 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 270 [2021-02-23 23:15:52,086 WARN L202 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 270 [2021-02-23 23:16:10,159 WARN L202 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:16:11,511 WARN L202 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:16:15,349 WARN L202 SmtUtils]: Spent 3.82 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:16:16,703 WARN L202 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:16:20,252 WARN L202 SmtUtils]: Spent 3.53 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:16:23,816 WARN L202 SmtUtils]: Spent 3.55 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:16:27,372 WARN L202 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:16:28,744 WARN L202 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:16:30,099 WARN L202 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:16:31,427 WARN L202 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:16:35,004 WARN L202 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:16:38,838 WARN L202 SmtUtils]: Spent 3.82 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:16:40,252 WARN L202 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 193 DAG size of output: 86 [2021-02-23 23:16:41,514 WARN L202 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 199 DAG size of output: 87 [2021-02-23 23:16:42,515 WARN L202 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2021-02-23 23:16:44,013 WARN L202 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 205 DAG size of output: 84 [2021-02-23 23:16:46,260 WARN L202 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 273 DAG size of output: 93 [2021-02-23 23:16:47,391 WARN L202 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 192 DAG size of output: 81 [2021-02-23 23:16:48,796 WARN L202 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 193 DAG size of output: 82 [2021-02-23 23:16:50,175 WARN L202 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 189 DAG size of output: 82 [2021-02-23 23:16:54,024 WARN L202 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:16:55,650 WARN L202 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 203 DAG size of output: 86 [2021-02-23 23:16:57,008 WARN L202 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 199 DAG size of output: 81 [2021-02-23 23:17:00,860 WARN L202 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:17:01,860 WARN L202 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 80 [2021-02-23 23:17:02,859 WARN L202 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 80 [2021-02-23 23:17:03,994 WARN L202 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 196 DAG size of output: 85 [2021-02-23 23:17:05,346 WARN L202 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 220 DAG size of output: 67 [2021-02-23 23:17:06,497 WARN L202 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 198 DAG size of output: 86 [2021-02-23 23:17:07,888 WARN L202 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:17:09,265 WARN L202 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:17:13,132 WARN L202 SmtUtils]: Spent 3.85 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:17:14,474 WARN L202 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 255 DAG size of output: 86 [2021-02-23 23:17:15,609 WARN L202 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 191 DAG size of output: 84 [2021-02-23 23:17:16,749 WARN L202 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 192 DAG size of output: 81 [2021-02-23 23:17:17,746 WARN L202 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 80 [2021-02-23 23:17:19,161 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 191 DAG size of output: 84 [2021-02-23 23:17:23,033 WARN L202 SmtUtils]: Spent 3.86 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:17:24,193 WARN L202 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 244 DAG size of output: 86 [2021-02-23 23:17:25,191 WARN L202 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2021-02-23 23:17:26,570 WARN L202 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 245 DAG size of output: 84 [2021-02-23 23:17:27,710 WARN L202 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 192 DAG size of output: 81 [2021-02-23 23:17:29,113 WARN L202 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 194 DAG size of output: 83 [2021-02-23 23:17:32,990 WARN L202 SmtUtils]: Spent 3.86 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:17:34,734 WARN L202 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 264 DAG size of output: 94 [2021-02-23 23:17:35,853 WARN L202 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 192 DAG size of output: 82 [2021-02-23 23:17:37,074 WARN L202 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 186 DAG size of output: 81 [2021-02-23 23:17:38,185 WARN L202 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 191 DAG size of output: 83 [2021-02-23 23:17:39,300 WARN L202 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 202 DAG size of output: 82 [2021-02-23 23:17:40,914 WARN L202 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 259 DAG size of output: 87 [2021-02-23 23:17:42,076 WARN L202 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 194 DAG size of output: 83 [2021-02-23 23:17:43,442 WARN L202 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 247 DAG size of output: 85 [2021-02-23 23:17:44,887 WARN L202 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 193 DAG size of output: 86 [2021-02-23 23:17:48,764 WARN L202 SmtUtils]: Spent 3.86 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:17:49,880 WARN L202 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 194 DAG size of output: 80 [2021-02-23 23:17:50,892 WARN L202 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 80 [2021-02-23 23:17:52,064 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 244 DAG size of output: 87 [2021-02-23 23:17:55,968 WARN L202 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:17:59,867 WARN L202 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:18:00,880 WARN L202 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 189 DAG size of output: 80 [2021-02-23 23:18:04,851 WARN L202 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:18:08,749 WARN L202 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:18:10,010 WARN L202 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 197 DAG size of output: 87 [2021-02-23 23:18:11,014 WARN L202 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 78 [2021-02-23 23:18:12,481 WARN L202 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2021-02-23 23:18:13,926 WARN L202 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2021-02-23 23:18:17,846 WARN L202 SmtUtils]: Spent 3.91 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:18:19,249 WARN L202 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:18:20,229 WARN L202 SmtUtils]: Spent 970.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 69 [2021-02-23 23:18:23,897 WARN L202 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:18:27,580 WARN L202 SmtUtils]: Spent 3.67 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:18:31,250 WARN L202 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:18:32,234 WARN L202 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 69 [2021-02-23 23:18:33,921 WARN L202 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 258 DAG size of output: 93 [2021-02-23 23:18:35,127 WARN L202 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 198 DAG size of output: 86 [2021-02-23 23:18:36,338 WARN L202 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 188 DAG size of output: 83 [2021-02-23 23:18:38,098 WARN L202 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 253 DAG size of output: 88 [2021-02-23 23:18:42,037 WARN L202 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:18:45,984 WARN L202 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:18:47,015 WARN L202 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 189 DAG size of output: 80 [2021-02-23 23:18:48,421 WARN L202 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 243 DAG size of output: 84 [2021-02-23 23:18:50,544 WARN L202 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 273 DAG size of output: 94 [2021-02-23 23:18:52,259 WARN L202 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 205 DAG size of output: 88 [2021-02-23 23:18:53,698 WARN L202 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 191 DAG size of output: 82 [2021-02-23 23:18:54,880 WARN L202 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 199 DAG size of output: 83 [2021-02-23 23:18:56,451 WARN L202 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 242 DAG size of output: 82 [2021-02-23 23:18:57,697 WARN L202 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 196 DAG size of output: 83 [2021-02-23 23:19:01,658 WARN L202 SmtUtils]: Spent 3.95 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:19:03,123 WARN L202 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 191 DAG size of output: 84 [2021-02-23 23:19:04,270 WARN L202 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 196 DAG size of output: 85 [2021-02-23 23:19:08,245 WARN L202 SmtUtils]: Spent 3.96 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:19:12,225 WARN L202 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:19:13,719 WARN L202 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 193 DAG size of output: 86 [2021-02-23 23:19:14,892 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 194 DAG size of output: 80 [2021-02-23 23:19:18,866 WARN L202 SmtUtils]: Spent 3.96 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:19:22,856 WARN L202 SmtUtils]: Spent 3.98 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:19:24,505 WARN L202 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 245 DAG size of output: 93 [2021-02-23 23:19:25,934 WARN L202 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:19:27,419 WARN L202 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2021-02-23 23:19:31,426 WARN L202 SmtUtils]: Spent 3.99 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:19:32,907 WARN L202 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2021-02-23 23:19:36,654 WARN L202 SmtUtils]: Spent 3.74 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:19:40,404 WARN L202 SmtUtils]: Spent 3.74 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:19:42,657 WARN L202 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 294 DAG size of output: 89 [2021-02-23 23:19:43,897 WARN L202 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 188 DAG size of output: 83 [2021-02-23 23:19:47,910 WARN L202 SmtUtils]: Spent 4.00 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:19:49,030 WARN L202 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 194 DAG size of output: 82 [2021-02-23 23:19:53,053 WARN L202 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:19:54,106 WARN L202 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 189 DAG size of output: 80 [2021-02-23 23:19:55,575 WARN L202 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 197 DAG size of output: 82 [2021-02-23 23:19:56,988 WARN L202 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 259 DAG size of output: 93 [2021-02-23 23:19:58,124 WARN L202 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 239 DAG size of output: 82 [2021-02-23 23:20:02,161 WARN L202 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:20:03,320 WARN L202 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 193 DAG size of output: 82 [2021-02-23 23:20:04,969 WARN L202 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 240 DAG size of output: 85 [2021-02-23 23:20:09,082 WARN L202 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:20:10,486 WARN L202 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 248 DAG size of output: 83 [2021-02-23 23:20:11,705 WARN L202 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 198 DAG size of output: 83 [2021-02-23 23:20:13,784 WARN L202 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 273 DAG size of output: 94 [2021-02-23 23:20:17,586 WARN L202 SmtUtils]: Spent 3.79 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:20:19,045 WARN L202 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:20:20,513 WARN L202 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:20:21,676 WARN L202 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 192 DAG size of output: 83 [2021-02-23 23:20:22,868 WARN L202 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 194 DAG size of output: 82 [2021-02-23 23:20:26,954 WARN L202 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:20:28,490 WARN L202 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 190 DAG size of output: 81 [2021-02-23 23:20:29,808 WARN L202 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 189 DAG size of output: 82 [2021-02-23 23:20:31,285 WARN L202 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 195 DAG size of output: 85 [2021-02-23 23:20:32,602 WARN L202 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 187 DAG size of output: 82 [2021-02-23 23:20:34,944 WARN L202 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 292 DAG size of output: 97 [2021-02-23 23:20:36,148 WARN L202 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 240 DAG size of output: 86 [2021-02-23 23:20:37,837 WARN L202 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 244 DAG size of output: 85 [2021-02-23 23:20:38,990 WARN L202 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 239 DAG size of output: 82 [2021-02-23 23:20:40,274 WARN L202 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 194 DAG size of output: 86 [2021-02-23 23:20:41,760 WARN L202 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 194 DAG size of output: 85 [2021-02-23 23:20:43,644 WARN L202 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 252 DAG size of output: 88 [2021-02-23 23:20:47,763 WARN L202 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:20:49,488 WARN L202 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 259 DAG size of output: 87 [2021-02-23 23:20:51,044 WARN L202 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 198 DAG size of output: 82 [2021-02-23 23:20:52,140 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 192 DAG size of output: 82 [2021-02-23 23:20:53,984 WARN L202 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 260 DAG size of output: 85 [2021-02-23 23:20:55,242 WARN L202 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 189 DAG size of output: 82 [2021-02-23 23:20:57,060 WARN L202 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 196 DAG size of output: 89 [2021-02-23 23:21:01,201 WARN L202 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:21:02,902 WARN L202 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 244 DAG size of output: 85 [2021-02-23 23:21:07,026 WARN L202 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:21:08,195 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 239 DAG size of output: 82 [2021-02-23 23:21:09,736 WARN L202 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2021-02-23 23:21:11,219 WARN L202 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:21:15,116 WARN L202 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:21:16,658 WARN L202 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2021-02-23 23:21:20,552 WARN L202 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:21:22,031 WARN L202 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 243 DAG size of output: 86 [2021-02-23 23:21:26,205 WARN L202 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:21:30,375 WARN L202 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:21:31,487 WARN L202 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 189 DAG size of output: 82 [2021-02-23 23:21:32,655 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 239 DAG size of output: 82 [2021-02-23 23:21:33,951 WARN L202 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 188 DAG size of output: 83 [2021-02-23 23:21:35,694 WARN L202 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 245 DAG size of output: 86 [2021-02-23 23:21:39,887 WARN L202 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:21:40,992 WARN L202 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2021-02-23 23:21:42,542 WARN L202 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2021-02-23 23:21:46,475 WARN L202 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:21:50,678 WARN L202 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:21:54,612 WARN L202 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:21:56,117 WARN L202 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:22:00,054 WARN L202 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:22:01,568 WARN L202 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:22:03,082 WARN L202 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:22:04,600 WARN L202 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:22:08,534 WARN L202 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 330 DAG size of output: 102 [2021-02-23 23:22:10,051 WARN L202 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:22:11,789 WARN L202 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 202 DAG size of output: 85 [2021-02-23 23:22:13,912 WARN L202 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 251 DAG size of output: 85 [2021-02-23 23:22:15,594 WARN L202 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 253 DAG size of output: 91 [2021-02-23 23:22:17,099 WARN L202 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 195 DAG size of output: 85 [2021-02-23 23:22:19,292 WARN L202 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 250 DAG size of output: 84 [2021-02-23 23:22:20,635 WARN L202 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 194 DAG size of output: 82 [2021-02-23 23:22:25,240 WARN L202 SmtUtils]: Spent 4.59 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:22:26,564 WARN L202 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 196 DAG size of output: 85 [2021-02-23 23:22:28,253 WARN L202 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2021-02-23 23:22:29,450 WARN L202 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2021-02-23 23:22:33,951 WARN L202 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 332 DAG size of output: 101 [2021-02-23 23:22:35,152 WARN L202 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2021-02-23 23:22:36,756 WARN L202 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2021-02-23 23:22:40,928 WARN L202 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 330 DAG size of output: 102