/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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:35:06,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:35:06,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:35:06,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:35:06,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:35:06,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:35:06,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:35:06,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:35:06,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:35:06,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:35:06,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:35:06,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:35:06,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:35:06,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:35:06,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:35:06,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:35:06,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:35:06,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:35:06,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:35:06,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:35:06,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:35:06,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:35:06,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:35:06,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:35:06,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:35:06,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:35:06,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:35:06,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:35:06,833 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:35:06,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:35:06,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:35:06,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:35:06,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:35:06,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:35:06,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:35:06,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:35:06,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:35:06,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:35:06,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:35:06,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:35:06,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:35:06,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:35:06,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:35:06,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:35:06,858 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:35:06,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:35:06,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:35:06,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:35:06,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:35:06,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:35:06,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:35:06,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:35:07,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:35:07,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:35:07,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:35:07,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:35:07,383 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:35:07,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-11-07 05:35:07,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5052624a4/e4472904293e42de8a62449548ef78ea/FLAG3e8d0c0d5 [2020-11-07 05:35:08,303 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:35:08,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-11-07 05:35:08,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5052624a4/e4472904293e42de8a62449548ef78ea/FLAG3e8d0c0d5 [2020-11-07 05:35:08,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5052624a4/e4472904293e42de8a62449548ef78ea [2020-11-07 05:35:08,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:35:08,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:35:08,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:35:08,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:35:08,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:35:08,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:35:08" (1/1) ... [2020-11-07 05:35:08,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3927fbb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:08, skipping insertion in model container [2020-11-07 05:35:08,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:35:08" (1/1) ... [2020-11-07 05:35:08,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:35:08,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:35:09,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:35:09,087 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:35:09,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:35:09,312 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:35:09,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:09 WrapperNode [2020-11-07 05:35:09,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:35:09,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:35:09,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:35:09,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:35:09,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:09" (1/1) ... [2020-11-07 05:35:09,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:09" (1/1) ... [2020-11-07 05:35:09,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:09" (1/1) ... [2020-11-07 05:35:09,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:09" (1/1) ... [2020-11-07 05:35:09,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:09" (1/1) ... [2020-11-07 05:35:09,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:09" (1/1) ... [2020-11-07 05:35:09,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:09" (1/1) ... [2020-11-07 05:35:09,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:35:09,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:35:09,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:35:09,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:35:09,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:09" (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 [2020-11-07 05:35:09,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:35:09,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:35:09,558 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:35:09,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-07 05:35:09,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:35:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-07 05:35:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:35:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:35:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:35:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:35:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:35:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:35:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:35:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:35:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:35:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:35:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:35:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:35:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:35:10,951 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:35:10,951 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 05:35:10,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:35:10 BoogieIcfgContainer [2020-11-07 05:35:10,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:35:10,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:35:10,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:35:10,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:35:10,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:35:08" (1/3) ... [2020-11-07 05:35:10,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e69f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:35:10, skipping insertion in model container [2020-11-07 05:35:10,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:09" (2/3) ... [2020-11-07 05:35:10,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e69f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:35:10, skipping insertion in model container [2020-11-07 05:35:10,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:35:10" (3/3) ... [2020-11-07 05:35:10,964 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2020-11-07 05:35:10,980 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:35:10,984 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:35:10,997 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:35:11,023 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:35:11,023 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:35:11,023 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:35:11,024 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:35:11,024 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:35:11,024 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:35:11,024 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:35:11,024 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:35:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2020-11-07 05:35:11,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-11-07 05:35:11,107 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:11,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:35:11,109 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:11,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:11,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1702667502, now seen corresponding path program 1 times [2020-11-07 05:35:11,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:11,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842135774] [2020-11-07 05:35:11,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:11,782 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:35:11,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:35:11,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842135774] [2020-11-07 05:35:11,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:35:11,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:35:11,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572112634] [2020-11-07 05:35:11,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:35:11,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:11,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:35:11,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:35:11,982 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 4 states. [2020-11-07 05:35:15,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:15,171 INFO L93 Difference]: Finished difference Result 1281 states and 1681 transitions. [2020-11-07 05:35:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 05:35:15,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-11-07 05:35:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:15,198 INFO L225 Difference]: With dead ends: 1281 [2020-11-07 05:35:15,198 INFO L226 Difference]: Without dead ends: 703 [2020-11-07 05:35:15,213 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 [2020-11-07 05:35:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-11-07 05:35:15,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 612. [2020-11-07 05:35:15,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-11-07 05:35:15,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 728 transitions. [2020-11-07 05:35:15,429 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 728 transitions. Word has length 163 [2020-11-07 05:35:15,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:15,430 INFO L481 AbstractCegarLoop]: Abstraction has 612 states and 728 transitions. [2020-11-07 05:35:15,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:35:15,431 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 728 transitions. [2020-11-07 05:35:15,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-11-07 05:35:15,437 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:15,438 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:35:15,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:35:15,439 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:15,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:15,440 INFO L82 PathProgramCache]: Analyzing trace with hash 154546291, now seen corresponding path program 1 times [2020-11-07 05:35:15,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:15,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187187743] [2020-11-07 05:35:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:15,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:15,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:15,810 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:35:15,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187187743] [2020-11-07 05:35:15,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:35:15,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 05:35:15,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712762050] [2020-11-07 05:35:15,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:35:15,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:15,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:35:15,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:35:15,818 INFO L87 Difference]: Start difference. First operand 612 states and 728 transitions. Second operand 8 states. [2020-11-07 05:35:16,043 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:35:16,729 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:35:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:19,449 INFO L93 Difference]: Finished difference Result 1599 states and 1996 transitions. [2020-11-07 05:35:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:35:19,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-11-07 05:35:19,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:19,468 INFO L225 Difference]: With dead ends: 1599 [2020-11-07 05:35:19,468 INFO L226 Difference]: Without dead ends: 1019 [2020-11-07 05:35:19,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-07 05:35:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-11-07 05:35:19,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 904. [2020-11-07 05:35:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-11-07 05:35:19,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1136 transitions. [2020-11-07 05:35:19,683 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1136 transitions. Word has length 184 [2020-11-07 05:35:19,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:19,684 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 1136 transitions. [2020-11-07 05:35:19,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:35:19,684 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1136 transitions. [2020-11-07 05:35:19,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-11-07 05:35:19,691 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:19,691 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:35:19,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:35:19,692 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:19,693 INFO L82 PathProgramCache]: Analyzing trace with hash -898477163, now seen corresponding path program 1 times [2020-11-07 05:35:19,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:19,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977761383] [2020-11-07 05:35:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:19,911 WARN L194 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:35:19,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:19,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:35:20,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977761383] [2020-11-07 05:35:20,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:35:20,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 05:35:20,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574141857] [2020-11-07 05:35:20,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:35:20,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:20,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:35:20,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:35:20,088 INFO L87 Difference]: Start difference. First operand 904 states and 1136 transitions. Second operand 8 states. [2020-11-07 05:35:20,326 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:35:20,858 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:35:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:23,847 INFO L93 Difference]: Finished difference Result 2723 states and 3695 transitions. [2020-11-07 05:35:23,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 05:35:23,848 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 185 [2020-11-07 05:35:23,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:23,873 INFO L225 Difference]: With dead ends: 2723 [2020-11-07 05:35:23,874 INFO L226 Difference]: Without dead ends: 1851 [2020-11-07 05:35:23,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-11-07 05:35:23,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-11-07 05:35:24,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1776. [2020-11-07 05:35:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1776 states. [2020-11-07 05:35:24,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2305 transitions. [2020-11-07 05:35:24,374 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2305 transitions. Word has length 185 [2020-11-07 05:35:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:24,374 INFO L481 AbstractCegarLoop]: Abstraction has 1776 states and 2305 transitions. [2020-11-07 05:35:24,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:35:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2305 transitions. [2020-11-07 05:35:24,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-11-07 05:35:24,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:24,386 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:35:24,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:35:24,387 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:24,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:24,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1881653219, now seen corresponding path program 1 times [2020-11-07 05:35:24,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:24,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573056349] [2020-11-07 05:35:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:24,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:24,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 05:35:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-07 05:35:24,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573056349] [2020-11-07 05:35:24,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:35:24,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:35:24,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931168717] [2020-11-07 05:35:24,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:35:24,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:24,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:35:24,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:35:24,794 INFO L87 Difference]: Start difference. First operand 1776 states and 2305 transitions. Second operand 8 states. [2020-11-07 05:35:25,035 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:35:25,904 WARN L194 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:35:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:29,377 INFO L93 Difference]: Finished difference Result 4104 states and 5427 transitions. [2020-11-07 05:35:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:35:29,378 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-11-07 05:35:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:29,397 INFO L225 Difference]: With dead ends: 4104 [2020-11-07 05:35:29,398 INFO L226 Difference]: Without dead ends: 2360 [2020-11-07 05:35:29,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:35:29,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2020-11-07 05:35:29,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 1677. [2020-11-07 05:35:29,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-11-07 05:35:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 2141 transitions. [2020-11-07 05:35:29,797 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 2141 transitions. Word has length 217 [2020-11-07 05:35:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:29,798 INFO L481 AbstractCegarLoop]: Abstraction has 1677 states and 2141 transitions. [2020-11-07 05:35:29,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:35:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 2141 transitions. [2020-11-07 05:35:29,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-11-07 05:35:29,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:29,810 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:35:29,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:35:29,810 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:29,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:29,811 INFO L82 PathProgramCache]: Analyzing trace with hash -233661240, now seen corresponding path program 1 times [2020-11-07 05:35:29,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:29,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18425236] [2020-11-07 05:35:29,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:30,001 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:35:30,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:30,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:30,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 05:35:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:30,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 05:35:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 55 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-07 05:35:30,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18425236] [2020-11-07 05:35:30,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:35:30,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:35:30,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672932156] [2020-11-07 05:35:30,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:35:30,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:30,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:35:30,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:35:30,238 INFO L87 Difference]: Start difference. First operand 1677 states and 2141 transitions. Second operand 8 states. [2020-11-07 05:35:31,106 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:35:31,785 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:35:32,090 WARN L194 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:35:34,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:34,661 INFO L93 Difference]: Finished difference Result 3886 states and 4994 transitions. [2020-11-07 05:35:34,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:35:34,662 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 251 [2020-11-07 05:35:34,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:34,680 INFO L225 Difference]: With dead ends: 3886 [2020-11-07 05:35:34,680 INFO L226 Difference]: Without dead ends: 2241 [2020-11-07 05:35:34,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:35:34,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2020-11-07 05:35:35,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 2015. [2020-11-07 05:35:35,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2015 states. [2020-11-07 05:35:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 2549 transitions. [2020-11-07 05:35:35,182 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 2549 transitions. Word has length 251 [2020-11-07 05:35:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:35,183 INFO L481 AbstractCegarLoop]: Abstraction has 2015 states and 2549 transitions. [2020-11-07 05:35:35,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:35:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 2549 transitions. [2020-11-07 05:35:35,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-11-07 05:35:35,197 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:35,197 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:35:35,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:35:35,198 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:35,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:35,199 INFO L82 PathProgramCache]: Analyzing trace with hash 567719630, now seen corresponding path program 1 times [2020-11-07 05:35:35,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:35,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444192006] [2020-11-07 05:35:35,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:35,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:35,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:35,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:35:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:35,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-11-07 05:35:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:35,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 05:35:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 112 proven. 25 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-07 05:35:35,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444192006] [2020-11-07 05:35:35,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:35:35,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:35:35,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901983187] [2020-11-07 05:35:35,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:35:35,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:35,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:35:35,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:35:35,682 INFO L87 Difference]: Start difference. First operand 2015 states and 2549 transitions. Second operand 10 states. [2020-11-07 05:35:36,163 WARN L194 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-11-07 05:35:36,830 WARN L194 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-11-07 05:35:37,218 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:35:37,757 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:35:38,163 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:35:39,393 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:35:40,282 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:35:44,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:44,558 INFO L93 Difference]: Finished difference Result 7366 states and 9760 transitions. [2020-11-07 05:35:44,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-07 05:35:44,559 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 267 [2020-11-07 05:35:44,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:44,593 INFO L225 Difference]: With dead ends: 7366 [2020-11-07 05:35:44,593 INFO L226 Difference]: Without dead ends: 5383 [2020-11-07 05:35:44,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2020-11-07 05:35:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5383 states. [2020-11-07 05:35:45,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5383 to 4016. [2020-11-07 05:35:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4016 states. [2020-11-07 05:35:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 4989 transitions. [2020-11-07 05:35:45,516 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 4989 transitions. Word has length 267 [2020-11-07 05:35:45,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:45,516 INFO L481 AbstractCegarLoop]: Abstraction has 4016 states and 4989 transitions. [2020-11-07 05:35:45,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:35:45,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 4989 transitions. [2020-11-07 05:35:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-11-07 05:35:45,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:45,535 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:35:45,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:35:45,536 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:45,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:45,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1724793775, now seen corresponding path program 1 times [2020-11-07 05:35:45,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:45,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340362023] [2020-11-07 05:35:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:45,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:45,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:45,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:35:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:45,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-11-07 05:35:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:45,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-11-07 05:35:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 136 proven. 21 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-07 05:35:45,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340362023] [2020-11-07 05:35:45,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:35:45,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:35:45,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188333290] [2020-11-07 05:35:45,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:35:45,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:45,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:35:45,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:35:45,929 INFO L87 Difference]: Start difference. First operand 4016 states and 4989 transitions. Second operand 7 states. [2020-11-07 05:35:46,486 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:35:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:49,631 INFO L93 Difference]: Finished difference Result 8906 states and 10993 transitions. [2020-11-07 05:35:49,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 05:35:49,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-11-07 05:35:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:49,666 INFO L225 Difference]: With dead ends: 8906 [2020-11-07 05:35:49,666 INFO L226 Difference]: Without dead ends: 4922 [2020-11-07 05:35:49,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:35:49,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4922 states. [2020-11-07 05:35:50,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4922 to 4790. [2020-11-07 05:35:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4790 states. [2020-11-07 05:35:50,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4790 states to 4790 states and 5758 transitions. [2020-11-07 05:35:50,841 INFO L78 Accepts]: Start accepts. Automaton has 4790 states and 5758 transitions. Word has length 274 [2020-11-07 05:35:50,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:50,841 INFO L481 AbstractCegarLoop]: Abstraction has 4790 states and 5758 transitions. [2020-11-07 05:35:50,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:35:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4790 states and 5758 transitions. [2020-11-07 05:35:50,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-11-07 05:35:50,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:50,860 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:35:50,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 05:35:50,861 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:50,862 INFO L82 PathProgramCache]: Analyzing trace with hash -141743399, now seen corresponding path program 1 times [2020-11-07 05:35:50,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:50,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690403531] [2020-11-07 05:35:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:51,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:51,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:35:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:51,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-11-07 05:35:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:51,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-11-07 05:35:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 137 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-11-07 05:35:51,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690403531] [2020-11-07 05:35:51,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:35:51,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:35:51,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891174193] [2020-11-07 05:35:51,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:35:51,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:51,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:35:51,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:35:51,233 INFO L87 Difference]: Start difference. First operand 4790 states and 5758 transitions. Second operand 7 states. [2020-11-07 05:35:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:55,121 INFO L93 Difference]: Finished difference Result 11177 states and 13463 transitions. [2020-11-07 05:35:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 05:35:55,122 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-11-07 05:35:55,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:55,154 INFO L225 Difference]: With dead ends: 11177 [2020-11-07 05:35:55,154 INFO L226 Difference]: Without dead ends: 6004 [2020-11-07 05:35:55,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:35:55,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6004 states. [2020-11-07 05:35:56,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6004 to 5950. [2020-11-07 05:35:56,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5950 states. [2020-11-07 05:35:56,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 6814 transitions. [2020-11-07 05:35:56,543 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 6814 transitions. Word has length 282 [2020-11-07 05:35:56,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:56,544 INFO L481 AbstractCegarLoop]: Abstraction has 5950 states and 6814 transitions. [2020-11-07 05:35:56,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:35:56,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 6814 transitions. [2020-11-07 05:35:56,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-11-07 05:35:56,563 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:56,563 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1] [2020-11-07 05:35:56,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 05:35:56,564 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:56,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:56,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1829437080, now seen corresponding path program 1 times [2020-11-07 05:35:56,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:56,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142657574] [2020-11-07 05:35:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:56,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:56,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:56,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:35:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:56,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-11-07 05:35:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:56,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-11-07 05:35:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 146 proven. 35 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-07 05:35:56,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142657574] [2020-11-07 05:35:56,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:35:56,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-07 05:35:56,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109333200] [2020-11-07 05:35:56,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 05:35:56,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:56,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 05:35:56,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-07 05:35:56,989 INFO L87 Difference]: Start difference. First operand 5950 states and 6814 transitions. Second operand 9 states. [2020-11-07 05:35:57,324 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:36:04,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:04,034 INFO L93 Difference]: Finished difference Result 13555 states and 15450 transitions. [2020-11-07 05:36:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-07 05:36:04,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 288 [2020-11-07 05:36:04,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:04,074 INFO L225 Difference]: With dead ends: 13555 [2020-11-07 05:36:04,074 INFO L226 Difference]: Without dead ends: 7778 [2020-11-07 05:36:04,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2020-11-07 05:36:04,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7778 states. [2020-11-07 05:36:05,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7778 to 7633. [2020-11-07 05:36:05,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7633 states. [2020-11-07 05:36:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 8546 transitions. [2020-11-07 05:36:05,668 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 8546 transitions. Word has length 288 [2020-11-07 05:36:05,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:05,669 INFO L481 AbstractCegarLoop]: Abstraction has 7633 states and 8546 transitions. [2020-11-07 05:36:05,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 05:36:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 8546 transitions. [2020-11-07 05:36:05,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-11-07 05:36:05,691 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:36:05,691 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:36:05,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 05:36:05,692 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:36:05,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:36:05,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1769085494, now seen corresponding path program 1 times [2020-11-07 05:36:05,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:36:05,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242948479] [2020-11-07 05:36:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:36:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:05,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:36:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:06,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:36:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:36:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:06,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 05:36:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:06,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 05:36:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 124 proven. 41 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-11-07 05:36:06,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242948479] [2020-11-07 05:36:06,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:36:06,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:36:06,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46046958] [2020-11-07 05:36:06,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:36:06,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:36:06,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:36:06,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:36:06,206 INFO L87 Difference]: Start difference. First operand 7633 states and 8546 transitions. Second operand 8 states. [2020-11-07 05:36:06,963 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:36:08,292 WARN L194 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:36:11,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:11,798 INFO L93 Difference]: Finished difference Result 15502 states and 17374 transitions. [2020-11-07 05:36:11,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 05:36:11,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 291 [2020-11-07 05:36:11,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:11,843 INFO L225 Difference]: With dead ends: 15502 [2020-11-07 05:36:11,844 INFO L226 Difference]: Without dead ends: 8042 [2020-11-07 05:36:11,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:36:11,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8042 states. [2020-11-07 05:36:13,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8042 to 7488. [2020-11-07 05:36:13,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7488 states. [2020-11-07 05:36:13,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7488 states to 7488 states and 8332 transitions. [2020-11-07 05:36:13,579 INFO L78 Accepts]: Start accepts. Automaton has 7488 states and 8332 transitions. Word has length 291 [2020-11-07 05:36:13,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:13,579 INFO L481 AbstractCegarLoop]: Abstraction has 7488 states and 8332 transitions. [2020-11-07 05:36:13,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:36:13,580 INFO L276 IsEmpty]: Start isEmpty. Operand 7488 states and 8332 transitions. [2020-11-07 05:36:13,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-11-07 05:36:13,594 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:36:13,595 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:36:13,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 05:36:13,595 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:36:13,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:36:13,596 INFO L82 PathProgramCache]: Analyzing trace with hash 157460476, now seen corresponding path program 1 times [2020-11-07 05:36:13,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:36:13,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737532756] [2020-11-07 05:36:13,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:36:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:13,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:36:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:13,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:36:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:13,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:36:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:13,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 05:36:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:13,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-07 05:36:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-07 05:36:13,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737532756] [2020-11-07 05:36:13,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:36:13,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:36:13,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787724412] [2020-11-07 05:36:13,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:36:13,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:36:13,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:36:13,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:36:13,982 INFO L87 Difference]: Start difference. First operand 7488 states and 8332 transitions. Second operand 8 states. [2020-11-07 05:36:14,301 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:36:15,114 WARN L194 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:36:18,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:18,860 INFO L93 Difference]: Finished difference Result 15154 states and 16874 transitions. [2020-11-07 05:36:18,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 05:36:18,867 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 297 [2020-11-07 05:36:18,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:18,900 INFO L225 Difference]: With dead ends: 15154 [2020-11-07 05:36:18,901 INFO L226 Difference]: Without dead ends: 7519 [2020-11-07 05:36:18,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:36:18,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7519 states. [2020-11-07 05:36:20,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7519 to 6879. [2020-11-07 05:36:20,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6879 states. [2020-11-07 05:36:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6879 states to 6879 states and 7618 transitions. [2020-11-07 05:36:20,367 INFO L78 Accepts]: Start accepts. Automaton has 6879 states and 7618 transitions. Word has length 297 [2020-11-07 05:36:20,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:20,367 INFO L481 AbstractCegarLoop]: Abstraction has 6879 states and 7618 transitions. [2020-11-07 05:36:20,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:36:20,367 INFO L276 IsEmpty]: Start isEmpty. Operand 6879 states and 7618 transitions. [2020-11-07 05:36:20,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-11-07 05:36:20,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:36:20,383 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:36:20,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 05:36:20,384 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:36:20,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:36:20,384 INFO L82 PathProgramCache]: Analyzing trace with hash 530672667, now seen corresponding path program 1 times [2020-11-07 05:36:20,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:36:20,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917039900] [2020-11-07 05:36:20,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:36:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:20,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:36:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:20,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:36:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:20,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:36:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:20,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 05:36:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-07 05:36:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:20,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-11-07 05:36:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 197 proven. 46 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-11-07 05:36:20,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917039900] [2020-11-07 05:36:20,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:36:20,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:36:20,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358115464] [2020-11-07 05:36:20,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:36:20,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:36:20,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:36:20,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:36:20,856 INFO L87 Difference]: Start difference. First operand 6879 states and 7618 transitions. Second operand 10 states. [2020-11-07 05:36:21,299 WARN L194 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-11-07 05:36:22,463 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:36:23,307 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:36:23,927 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:36:24,151 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:36:24,693 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:36:25,027 WARN L194 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:36:26,447 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:36:30,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:30,109 INFO L93 Difference]: Finished difference Result 15064 states and 16761 transitions. [2020-11-07 05:36:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-07 05:36:30,110 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 337 [2020-11-07 05:36:30,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:30,146 INFO L225 Difference]: With dead ends: 15064 [2020-11-07 05:36:30,146 INFO L226 Difference]: Without dead ends: 8363 [2020-11-07 05:36:30,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2020-11-07 05:36:30,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8363 states. [2020-11-07 05:36:31,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8363 to 7202. [2020-11-07 05:36:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7202 states. [2020-11-07 05:36:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7202 states to 7202 states and 7857 transitions. [2020-11-07 05:36:31,810 INFO L78 Accepts]: Start accepts. Automaton has 7202 states and 7857 transitions. Word has length 337 [2020-11-07 05:36:31,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:31,810 INFO L481 AbstractCegarLoop]: Abstraction has 7202 states and 7857 transitions. [2020-11-07 05:36:31,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:36:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 7202 states and 7857 transitions. [2020-11-07 05:36:31,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-11-07 05:36:31,820 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:36:31,820 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, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-11-07 05:36:31,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 05:36:31,820 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:36:31,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:36:31,821 INFO L82 PathProgramCache]: Analyzing trace with hash -299578980, now seen corresponding path program 1 times [2020-11-07 05:36:31,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:36:31,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669883698] [2020-11-07 05:36:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:36:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:32,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:36:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:32,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:36:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:32,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 05:36:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:32,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 05:36:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:32,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-07 05:36:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:32,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-11-07 05:36:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 222 proven. 40 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-11-07 05:36:32,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669883698] [2020-11-07 05:36:32,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:36:32,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:36:32,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474206742] [2020-11-07 05:36:32,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:36:32,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:36:32,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:36:32,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:36:32,307 INFO L87 Difference]: Start difference. First operand 7202 states and 7857 transitions. Second operand 10 states. [2020-11-07 05:36:32,495 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:36:32,668 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:36:33,904 WARN L194 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-11-07 05:36:34,092 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:36:34,364 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:36:34,720 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:36:35,453 WARN L194 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:36:36,557 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:36:36,939 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:36:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:40,847 INFO L93 Difference]: Finished difference Result 14614 states and 15970 transitions. [2020-11-07 05:36:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-07 05:36:40,848 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 355 [2020-11-07 05:36:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:40,879 INFO L225 Difference]: With dead ends: 14614 [2020-11-07 05:36:40,880 INFO L226 Difference]: Without dead ends: 7590 [2020-11-07 05:36:40,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2020-11-07 05:36:40,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7590 states. [2020-11-07 05:36:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7590 to 6844. [2020-11-07 05:36:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6844 states. [2020-11-07 05:36:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6844 states to 6844 states and 7414 transitions. [2020-11-07 05:36:42,420 INFO L78 Accepts]: Start accepts. Automaton has 6844 states and 7414 transitions. Word has length 355 [2020-11-07 05:36:42,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:42,420 INFO L481 AbstractCegarLoop]: Abstraction has 6844 states and 7414 transitions. [2020-11-07 05:36:42,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:36:42,420 INFO L276 IsEmpty]: Start isEmpty. Operand 6844 states and 7414 transitions. [2020-11-07 05:36:42,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-11-07 05:36:42,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:36:42,431 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2020-11-07 05:36:42,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 05:36:42,432 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:36:42,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:36:42,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1778024703, now seen corresponding path program 1 times [2020-11-07 05:36:42,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:36:42,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246118272] [2020-11-07 05:36:42,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:36:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:42,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:36:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:42,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:36:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:42,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:36:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 05:36:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:42,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-07 05:36:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:42,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 05:36:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:42,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-11-07 05:36:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:43,038 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 281 proven. 38 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-11-07 05:36:43,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246118272] [2020-11-07 05:36:43,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:36:43,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:36:43,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592101212] [2020-11-07 05:36:43,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:36:43,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:36:43,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:36:43,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:36:43,045 INFO L87 Difference]: Start difference. First operand 6844 states and 7414 transitions. Second operand 8 states. [2020-11-07 05:36:43,236 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:36:43,500 WARN L194 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:36:44,870 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:36:46,309 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:36:49,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:49,207 INFO L93 Difference]: Finished difference Result 15747 states and 17116 transitions. [2020-11-07 05:36:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 05:36:49,210 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 383 [2020-11-07 05:36:49,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:49,240 INFO L225 Difference]: With dead ends: 15747 [2020-11-07 05:36:49,240 INFO L226 Difference]: Without dead ends: 8221 [2020-11-07 05:36:49,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:36:49,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8221 states. [2020-11-07 05:36:50,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8221 to 6081. [2020-11-07 05:36:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6081 states. [2020-11-07 05:36:50,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 6429 transitions. [2020-11-07 05:36:50,819 INFO L78 Accepts]: Start accepts. Automaton has 6081 states and 6429 transitions. Word has length 383 [2020-11-07 05:36:50,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:50,820 INFO L481 AbstractCegarLoop]: Abstraction has 6081 states and 6429 transitions. [2020-11-07 05:36:50,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:36:50,820 INFO L276 IsEmpty]: Start isEmpty. Operand 6081 states and 6429 transitions. [2020-11-07 05:36:50,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-11-07 05:36:50,829 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:36:50,829 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, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:36:50,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 05:36:50,829 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:36:50,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:36:50,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1601370321, now seen corresponding path program 1 times [2020-11-07 05:36:50,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:36:50,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743520256] [2020-11-07 05:36:50,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:36:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:51,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:36:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:51,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:36:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:51,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:36:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:51,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 05:36:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:51,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-11-07 05:36:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:51,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 05:36:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 287 proven. 32 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-11-07 05:36:51,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743520256] [2020-11-07 05:36:51,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:36:51,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:36:51,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053073161] [2020-11-07 05:36:51,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:36:51,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:36:51,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:36:51,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:36:51,416 INFO L87 Difference]: Start difference. First operand 6081 states and 6429 transitions. Second operand 8 states. [2020-11-07 05:36:51,752 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:36:52,942 WARN L194 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:36:54,104 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:36:55,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:55,869 INFO L93 Difference]: Finished difference Result 12062 states and 12755 transitions. [2020-11-07 05:36:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:36:55,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 415 [2020-11-07 05:36:55,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:55,891 INFO L225 Difference]: With dead ends: 12062 [2020-11-07 05:36:55,891 INFO L226 Difference]: Without dead ends: 6159 [2020-11-07 05:36:55,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:36:55,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6159 states. [2020-11-07 05:36:57,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6159 to 5803. [2020-11-07 05:36:57,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5803 states. [2020-11-07 05:36:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 6117 transitions. [2020-11-07 05:36:57,679 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 6117 transitions. Word has length 415 [2020-11-07 05:36:57,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:57,682 INFO L481 AbstractCegarLoop]: Abstraction has 5803 states and 6117 transitions. [2020-11-07 05:36:57,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:36:57,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 6117 transitions. [2020-11-07 05:36:57,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-11-07 05:36:57,694 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:36:57,694 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, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:36:57,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 05:36:57,696 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:36:57,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:36:57,696 INFO L82 PathProgramCache]: Analyzing trace with hash -703582026, now seen corresponding path program 1 times [2020-11-07 05:36:57,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:36:57,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943174196] [2020-11-07 05:36:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:36:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:57,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:36:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:57,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:36:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:57,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:36:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:58,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 05:36:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:58,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-07 05:36:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:58,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-11-07 05:36:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:58,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-11-07 05:36:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 301 proven. 6 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2020-11-07 05:36:58,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943174196] [2020-11-07 05:36:58,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:36:58,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-07 05:36:58,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997627834] [2020-11-07 05:36:58,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 05:36:58,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:36:58,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 05:36:58,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:36:58,263 INFO L87 Difference]: Start difference. First operand 5803 states and 6117 transitions. Second operand 5 states. [2020-11-07 05:37:01,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:37:01,441 INFO L93 Difference]: Finished difference Result 11716 states and 12369 transitions. [2020-11-07 05:37:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 05:37:01,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 436 [2020-11-07 05:37:01,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:37:01,450 INFO L225 Difference]: With dead ends: 11716 [2020-11-07 05:37:01,450 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 05:37:01,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:37:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 05:37:01,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 05:37:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 05:37:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 05:37:01,467 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 436 [2020-11-07 05:37:01,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:37:01,467 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 05:37:01,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 05:37:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 05:37:01,467 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 05:37:01,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 05:37:01,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 05:37:02,117 WARN L194 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:37:17,983 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2020-11-07 05:37:18,199 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2020-11-07 05:37:18,319 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2020-11-07 05:37:18,460 WARN L194 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 113 [2020-11-07 05:37:34,975 WARN L194 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-11-07 05:38:14,602 WARN L194 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-11-07 05:38:16,307 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-11-07 05:38:16,550 WARN L194 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-11-07 05:38:35,999 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-11-07 05:38:46,625 WARN L194 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:46,758 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:47,013 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:47,139 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:47,288 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:47,416 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:47,545 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:47,682 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:47,885 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:48,016 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:48,143 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:48,266 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:48,393 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:48,520 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:48,723 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:48,857 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:49,044 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:38:49,252 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-11-07 05:39:01,795 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:39:02,613 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:39:03,176 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:39:03,564 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:39:04,028 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:39:04,218 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:39:05,723 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:39:06,515 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 123 [2020-11-07 05:39:08,466 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:39:21,076 WARN L194 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 136 [2020-11-07 05:39:21,262 WARN L194 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:21,423 WARN L194 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 136 [2020-11-07 05:39:21,581 WARN L194 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 136 [2020-11-07 05:39:21,745 WARN L194 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:21,908 WARN L194 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:22,072 WARN L194 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:22,233 WARN L194 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:22,398 WARN L194 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:22,570 WARN L194 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:22,741 WARN L194 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:22,910 WARN L194 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:23,090 WARN L194 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:23,253 WARN L194 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:23,414 WARN L194 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:23,575 WARN L194 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 136 [2020-11-07 05:39:23,738 WARN L194 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:23,902 WARN L194 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:24,067 WARN L194 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:24,239 WARN L194 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:24,438 WARN L194 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 136 [2020-11-07 05:39:24,609 WARN L194 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 136 [2020-11-07 05:39:24,784 WARN L194 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:24,956 WARN L194 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-11-07 05:39:28,453 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-11-07 05:39:28,614 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-11-07 05:39:28,786 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-11-07 05:39:28,902 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-11-07 05:39:29,029 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-11-07 05:39:29,152 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-11-07 05:39:29,277 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-11-07 05:39:29,389 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-11-07 05:39:29,501 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-11-07 05:39:29,618 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-11-07 05:39:29,731 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-11-07 05:39:29,854 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-11-07 05:39:29,965 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-11-07 05:39:30,139 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-11-07 05:39:30,375 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-11-07 05:39:30,499 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-11-07 05:39:42,493 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 121 [2020-11-07 05:39:42,604 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 126 [2020-11-07 05:39:42,725 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 130 [2020-11-07 05:39:42,936 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 130 [2020-11-07 05:39:43,159 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 130 [2020-11-07 05:39:43,270 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 126 [2020-11-07 05:39:43,644 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 126 [2020-11-07 05:39:43,768 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 121 [2020-11-07 05:39:43,880 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 126 [2020-11-07 05:39:44,009 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 124 [2020-11-07 05:39:44,248 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 130 [2020-11-07 05:40:06,339 WARN L194 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-11-07 05:40:06,964 WARN L194 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 155 [2020-11-07 05:40:07,962 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 162 [2020-11-07 05:40:08,560 WARN L194 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 167 [2020-11-07 05:40:10,607 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 155 [2020-11-07 05:40:11,607 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 162 [2020-11-07 05:40:49,152 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:40:49,808 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:40:50,910 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:40:51,370 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:40:51,563 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:40:53,076 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:40:53,617 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-11-07 05:41:08,828 WARN L194 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-11-07 05:41:09,070 WARN L194 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-11-07 05:41:09,314 WARN L194 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-11-07 05:41:12,020 WARN L194 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-11-07 05:41:24,031 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2020-11-07 05:41:24,245 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2020-11-07 05:41:24,367 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2020-11-07 05:41:24,487 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 113 [2020-11-07 05:41:26,909 WARN L194 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 253 DAG size of output: 85 [2020-11-07 05:41:31,524 WARN L194 SmtUtils]: Spent 4.60 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:41:36,124 WARN L194 SmtUtils]: Spent 4.58 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:41:40,704 WARN L194 SmtUtils]: Spent 4.57 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:41:42,405 WARN L194 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 253 DAG size of output: 85 [2020-11-07 05:41:44,069 WARN L194 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-11-07 05:41:45,342 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 194 DAG size of output: 69 [2020-11-07 05:41:46,987 WARN L194 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-11-07 05:41:51,587 WARN L194 SmtUtils]: Spent 4.59 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:41:52,883 WARN L194 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 194 DAG size of output: 69 [2020-11-07 05:41:57,493 WARN L194 SmtUtils]: Spent 4.60 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:41:59,107 WARN L194 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 276 DAG size of output: 84 [2020-11-07 05:42:00,629 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 260 DAG size of output: 82 [2020-11-07 05:42:02,063 WARN L194 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 258 DAG size of output: 82 [2020-11-07 05:42:03,723 WARN L194 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 215 DAG size of output: 88 [2020-11-07 05:42:05,112 WARN L194 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:42:07,686 WARN L194 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 327 DAG size of output: 100 [2020-11-07 05:42:12,325 WARN L194 SmtUtils]: Spent 4.63 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:42:14,096 WARN L194 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 266 DAG size of output: 86 [2020-11-07 05:42:15,919 WARN L194 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 259 DAG size of output: 83 [2020-11-07 05:42:20,577 WARN L194 SmtUtils]: Spent 4.65 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:42:25,231 WARN L194 SmtUtils]: Spent 4.64 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:42:26,602 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 208 DAG size of output: 79 [2020-11-07 05:42:28,054 WARN L194 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 258 DAG size of output: 82 [2020-11-07 05:42:29,568 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 212 DAG size of output: 86 [2020-11-07 05:42:31,091 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 258 DAG size of output: 84 [2020-11-07 05:42:35,771 WARN L194 SmtUtils]: Spent 4.67 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:42:37,152 WARN L194 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:42:38,920 WARN L194 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 253 DAG size of output: 85 [2020-11-07 05:42:40,343 WARN L194 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:42:42,120 WARN L194 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 269 DAG size of output: 86 [2020-11-07 05:42:43,500 WARN L194 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 208 DAG size of output: 79 [2020-11-07 05:42:45,628 WARN L194 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 221 DAG size of output: 85 [2020-11-07 05:42:50,321 WARN L194 SmtUtils]: Spent 4.68 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:42:51,855 WARN L194 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 260 DAG size of output: 82 [2020-11-07 05:42:56,565 WARN L194 SmtUtils]: Spent 4.70 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:42:58,038 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 258 DAG size of output: 82 [2020-11-07 05:42:59,655 WARN L194 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 212 DAG size of output: 87 [2020-11-07 05:43:01,199 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 216 DAG size of output: 84 [2020-11-07 05:43:05,922 WARN L194 SmtUtils]: Spent 4.71 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:43:07,395 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 211 DAG size of output: 83 [2020-11-07 05:43:08,785 WARN L194 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 208 DAG size of output: 79 [2020-11-07 05:43:10,188 WARN L194 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 209 DAG size of output: 80 [2020-11-07 05:43:12,043 WARN L194 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 247 DAG size of output: 96 [2020-11-07 05:43:14,225 WARN L194 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 241 DAG size of output: 92 [2020-11-07 05:43:15,926 WARN L194 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 219 DAG size of output: 88 [2020-11-07 05:43:17,672 WARN L194 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 212 DAG size of output: 88 [2020-11-07 05:43:22,436 WARN L194 SmtUtils]: Spent 4.75 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:43:23,922 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 215 DAG size of output: 83 [2020-11-07 05:43:25,854 WARN L194 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 259 DAG size of output: 85 [2020-11-07 05:43:28,078 WARN L194 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 221 DAG size of output: 85 [2020-11-07 05:43:29,551 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 209 DAG size of output: 80 [2020-11-07 05:43:31,018 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 212 DAG size of output: 82 [2020-11-07 05:43:33,139 WARN L194 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 266 DAG size of output: 85 [2020-11-07 05:43:34,551 WARN L194 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 211 DAG size of output: 82 [2020-11-07 05:43:36,226 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 276 DAG size of output: 84 [2020-11-07 05:43:37,814 WARN L194 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 218 DAG size of output: 86 [2020-11-07 05:43:39,612 WARN L194 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 231 DAG size of output: 90 [2020-11-07 05:43:44,387 WARN L194 SmtUtils]: Spent 4.76 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:43:46,135 WARN L194 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 211 DAG size of output: 87 [2020-11-07 05:43:48,596 WARN L194 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 229 DAG size of output: 74 [2020-11-07 05:43:50,348 WARN L194 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-11-07 05:43:51,774 WARN L194 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 212 DAG size of output: 82 [2020-11-07 05:43:56,578 WARN L194 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:43:58,006 WARN L194 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:43:59,736 WARN L194 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-11-07 05:44:04,558 WARN L194 SmtUtils]: Spent 4.81 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:44:09,361 WARN L194 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:44:14,190 WARN L194 SmtUtils]: Spent 4.82 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:44:15,933 WARN L194 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-11-07 05:44:17,674 WARN L194 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-11-07 05:44:19,427 WARN L194 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-11-07 05:44:24,277 WARN L194 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:44:29,126 WARN L194 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:44:30,565 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-11-07 05:44:33,131 WARN L194 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 230 DAG size of output: 88 [2020-11-07 05:44:38,002 WARN L194 SmtUtils]: Spent 4.86 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:44:39,543 WARN L194 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 213 DAG size of output: 81 [2020-11-07 05:44:41,501 WARN L194 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 269 DAG size of output: 84 [2020-11-07 05:44:43,693 WARN L194 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 215 DAG size of output: 87 [2020-11-07 05:44:45,290 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 220 DAG size of output: 84 [2020-11-07 05:44:48,281 WARN L194 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 290 DAG size of output: 94 [2020-11-07 05:44:50,463 WARN L194 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 266 DAG size of output: 85 [2020-11-07 05:44:52,608 WARN L194 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 291 DAG size of output: 89 [2020-11-07 05:44:54,075 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 209 DAG size of output: 80 [2020-11-07 05:44:56,123 WARN L194 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 269 DAG size of output: 87 [2020-11-07 05:44:57,687 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 216 DAG size of output: 83 [2020-11-07 05:45:02,590 WARN L194 SmtUtils]: Spent 4.89 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:45:04,237 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 213 DAG size of output: 83 [2020-11-07 05:45:05,717 WARN L194 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 207 DAG size of output: 78 [2020-11-07 05:45:07,182 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 211 DAG size of output: 82 [2020-11-07 05:45:08,839 WARN L194 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 213 DAG size of output: 83 [2020-11-07 05:45:10,736 WARN L194 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 222 DAG size of output: 87 [2020-11-07 05:45:12,568 WARN L194 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 253 DAG size of output: 85 [2020-11-07 05:45:14,024 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 208 DAG size of output: 80 [2020-11-07 05:45:18,939 WARN L194 SmtUtils]: Spent 4.90 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:45:23,862 WARN L194 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:45:25,716 WARN L194 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 253 DAG size of output: 85 [2020-11-07 05:45:30,645 WARN L194 SmtUtils]: Spent 4.92 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:45:35,614 WARN L194 SmtUtils]: Spent 4.96 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:45:40,573 WARN L194 SmtUtils]: Spent 4.95 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:45:42,379 WARN L194 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-11-07 05:45:44,319 WARN L194 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 231 DAG size of output: 92 [2020-11-07 05:45:46,407 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 227 DAG size of output: 87 [2020-11-07 05:45:51,386 WARN L194 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:45:53,094 WARN L194 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 218 DAG size of output: 84 [2020-11-07 05:45:54,571 WARN L194 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 210 DAG size of output: 81 [2020-11-07 05:45:56,910 WARN L194 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 217 DAG size of output: 86 [2020-11-07 05:46:00,090 WARN L194 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 307 DAG size of output: 90 [2020-11-07 05:46:02,202 WARN L194 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 263 DAG size of output: 85 [2020-11-07 05:46:03,855 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 222 DAG size of output: 84 [2020-11-07 05:46:05,938 WARN L194 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 259 DAG size of output: 92 [2020-11-07 05:46:07,541 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 217 DAG size of output: 83 [2020-11-07 05:46:09,120 WARN L194 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 213 DAG size of output: 81 [2020-11-07 05:46:10,847 WARN L194 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 219 DAG size of output: 84 [2020-11-07 05:46:15,862 WARN L194 SmtUtils]: Spent 5.00 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:46:17,630 WARN L194 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 276 DAG size of output: 84 [2020-11-07 05:46:22,656 WARN L194 SmtUtils]: Spent 5.01 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:46:24,810 WARN L194 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 223 DAG size of output: 90 [2020-11-07 05:46:26,647 WARN L194 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-11-07 05:46:28,559 WARN L194 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 253 DAG size of output: 85 [2020-11-07 05:46:33,606 WARN L194 SmtUtils]: Spent 5.03 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:46:35,700 WARN L194 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 260 DAG size of output: 85 [2020-11-07 05:46:37,758 WARN L194 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 224 DAG size of output: 87 [2020-11-07 05:46:42,821 WARN L194 SmtUtils]: Spent 5.05 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:46:44,652 WARN L194 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 214 DAG size of output: 88 [2020-11-07 05:46:46,310 WARN L194 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 220 DAG size of output: 84 [2020-11-07 05:46:47,882 WARN L194 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 212 DAG size of output: 83 [2020-11-07 05:46:49,607 WARN L194 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 216 DAG size of output: 84 [2020-11-07 05:46:51,240 WARN L194 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-11-07 05:46:52,758 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 208 DAG size of output: 79 [2020-11-07 05:46:57,844 WARN L194 SmtUtils]: Spent 5.07 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:47:00,066 WARN L194 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 264 DAG size of output: 89 [2020-11-07 05:47:01,773 WARN L194 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 216 DAG size of output: 84 [2020-11-07 05:47:04,410 WARN L194 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 220 DAG size of output: 88 [2020-11-07 05:47:05,943 WARN L194 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 208 DAG size of output: 79 [2020-11-07 05:47:07,625 WARN L194 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 216 DAG size of output: 85 [2020-11-07 05:47:09,383 WARN L194 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 269 DAG size of output: 85 [2020-11-07 05:47:11,032 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-11-07 05:47:12,856 WARN L194 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 216 DAG size of output: 84 [2020-11-07 05:47:14,571 WARN L194 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 220 DAG size of output: 80 [2020-11-07 05:47:16,526 WARN L194 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 244 DAG size of output: 91 [2020-11-07 05:47:18,864 WARN L194 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 285 DAG size of output: 94 [2020-11-07 05:47:20,577 WARN L194 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 221 DAG size of output: 85 [2020-11-07 05:47:22,394 WARN L194 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 228 DAG size of output: 89 [2020-11-07 05:47:24,267 WARN L194 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 210 DAG size of output: 86 [2020-11-07 05:47:27,165 WARN L194 SmtUtils]: Spent 2.89 s on a formula simplification. DAG size of input: 263 DAG size of output: 92 [2020-11-07 05:47:28,735 WARN L194 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 207 DAG size of output: 78 [2020-11-07 05:47:30,591 WARN L194 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-11-07 05:47:33,269 WARN L194 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 229 DAG size of output: 74 [2020-11-07 05:47:38,433 WARN L194 SmtUtils]: Spent 5.15 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:47:43,581 WARN L194 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:47:46,247 WARN L194 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 229 DAG size of output: 74 [2020-11-07 05:47:48,916 WARN L194 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 229 DAG size of output: 74 [2020-11-07 05:47:50,813 WARN L194 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-11-07 05:47:52,763 WARN L194 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 215 DAG size of output: 88 [2020-11-07 05:47:57,948 WARN L194 SmtUtils]: Spent 5.17 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:47:59,537 WARN L194 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 211 DAG size of output: 81 [2020-11-07 05:48:01,203 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 212 DAG size of output: 83 [2020-11-07 05:48:03,262 WARN L194 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 240 DAG size of output: 96 [2020-11-07 05:48:08,486 WARN L194 SmtUtils]: Spent 5.21 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:48:14,231 WARN L194 SmtUtils]: Spent 5.73 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-11-07 05:48:16,366 WARN L194 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 262 DAG size of output: 82