/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:22:04,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:22:04,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:22:04,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 05:22:04,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:22:04,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:22:04,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:22:04,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:22:04,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:22:04,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:22:04,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:22:04,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:22:04,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:22:04,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:22:04,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:22:04,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:22:04,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:22:04,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:22:04,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:22:04,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:22:04,868 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 05:22:04,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:22:04,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:22:04,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:22:04,895 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:22:04,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:22:04,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:22:04,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:22:04,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:22:04,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:22:04,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:22:04,898 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:22:04,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:22:04,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:22:04,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:22:04,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:22:04,900 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:22:04,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:22:04,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:22:04,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:22:04,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:22:04,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:22:04,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:22:04,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:22:05,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:22:05,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:22:05,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:22:05,381 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:22:05,382 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:22:05,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-11-07 05:22:05,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264806a62/f7f70aefec17466b89786170495c9d6c/FLAGfc33de0b8 [2020-11-07 05:22:06,186 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:22:06,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-11-07 05:22:06,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264806a62/f7f70aefec17466b89786170495c9d6c/FLAGfc33de0b8 [2020-11-07 05:22:06,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264806a62/f7f70aefec17466b89786170495c9d6c [2020-11-07 05:22:06,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:22:06,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:22:06,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:22:06,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:22:06,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:22:06,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:22:06" (1/1) ... [2020-11-07 05:22:06,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfc022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:22:06, skipping insertion in model container [2020-11-07 05:22:06,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:22:06" (1/1) ... [2020-11-07 05:22:06,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:22:06,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:22:06,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:22:06,915 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:22:07,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:22:07,100 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:22:07,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:22:07 WrapperNode [2020-11-07 05:22:07,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:22:07,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:22:07,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:22:07,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:22:07,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:22:07" (1/1) ... [2020-11-07 05:22:07,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:22:07" (1/1) ... [2020-11-07 05:22:07,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:22:07" (1/1) ... [2020-11-07 05:22:07,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:22:07" (1/1) ... [2020-11-07 05:22:07,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:22:07" (1/1) ... [2020-11-07 05:22:07,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:22:07" (1/1) ... [2020-11-07 05:22:07,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:22:07" (1/1) ... [2020-11-07 05:22:07,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:22:07,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:22:07,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:22:07,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:22:07,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:22:07" (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 05:22:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:22:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:22:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:22:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-07 05:22:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:22:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-07 05:22:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:22:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:22:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:22:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:22:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:22:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:22:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:22:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:22:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:22:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:22:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:22:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:22:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:22:08,814 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:22:08,815 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 05:22:08,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:22:08 BoogieIcfgContainer [2020-11-07 05:22:08,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:22:08,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:22:08,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:22:08,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:22:08,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:22:06" (1/3) ... [2020-11-07 05:22:08,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48560c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:22:08, skipping insertion in model container [2020-11-07 05:22:08,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:22:07" (2/3) ... [2020-11-07 05:22:08,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48560c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:22:08, skipping insertion in model container [2020-11-07 05:22:08,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:22:08" (3/3) ... [2020-11-07 05:22:08,828 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2020-11-07 05:22:08,844 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:22:08,848 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:22:08,867 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:22:08,893 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:22:08,894 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:22:08,895 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:22:08,895 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:22:08,895 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:22:08,895 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:22:08,895 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:22:08,895 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:22:08,939 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2020-11-07 05:22:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-07 05:22:08,970 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:08,973 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] [2020-11-07 05:22:08,973 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:08,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:08,984 INFO L82 PathProgramCache]: Analyzing trace with hash -742173896, now seen corresponding path program 1 times [2020-11-07 05:22:08,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:08,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105965444] [2020-11-07 05:22:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:09,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:09,766 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 05:22:09,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105965444] [2020-11-07 05:22:09,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:22:09,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:22:09,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132494847] [2020-11-07 05:22:09,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:22:09,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:09,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:22:09,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:22:09,799 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 4 states. [2020-11-07 05:22:10,052 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:22:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:12,868 INFO L93 Difference]: Finished difference Result 1353 states and 1752 transitions. [2020-11-07 05:22:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 05:22:12,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-11-07 05:22:12,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:12,910 INFO L225 Difference]: With dead ends: 1353 [2020-11-07 05:22:12,910 INFO L226 Difference]: Without dead ends: 750 [2020-11-07 05:22:12,930 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 05:22:12,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-11-07 05:22:13,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 673. [2020-11-07 05:22:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-11-07 05:22:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 789 transitions. [2020-11-07 05:22:13,123 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 789 transitions. Word has length 146 [2020-11-07 05:22:13,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:13,124 INFO L481 AbstractCegarLoop]: Abstraction has 673 states and 789 transitions. [2020-11-07 05:22:13,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:22:13,124 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 789 transitions. [2020-11-07 05:22:13,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-11-07 05:22:13,137 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:13,138 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:22:13,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:22:13,140 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:13,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:13,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1974306298, now seen corresponding path program 1 times [2020-11-07 05:22:13,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:13,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318404979] [2020-11-07 05:22:13,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:13,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:13,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:13,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:22:13,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318404979] [2020-11-07 05:22:13,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:13,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:22:13,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305489061] [2020-11-07 05:22:13,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:22:13,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:13,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:22:13,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:22:13,867 INFO L87 Difference]: Start difference. First operand 673 states and 789 transitions. Second operand 11 states. [2020-11-07 05:22:14,088 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:22:14,565 WARN L194 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:22:14,721 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:22:15,130 WARN L194 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 05:22:15,390 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:22:19,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:19,990 INFO L93 Difference]: Finished difference Result 2531 states and 3317 transitions. [2020-11-07 05:22:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:22:19,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-11-07 05:22:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:20,004 INFO L225 Difference]: With dead ends: 2531 [2020-11-07 05:22:20,005 INFO L226 Difference]: Without dead ends: 1480 [2020-11-07 05:22:20,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:22:20,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2020-11-07 05:22:20,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1248. [2020-11-07 05:22:20,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2020-11-07 05:22:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1477 transitions. [2020-11-07 05:22:20,298 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1477 transitions. Word has length 167 [2020-11-07 05:22:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:20,299 INFO L481 AbstractCegarLoop]: Abstraction has 1248 states and 1477 transitions. [2020-11-07 05:22:20,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:22:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1477 transitions. [2020-11-07 05:22:20,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-11-07 05:22:20,305 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:20,306 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:22:20,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:22:20,306 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:20,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:20,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1940010900, now seen corresponding path program 1 times [2020-11-07 05:22:20,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:20,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649483758] [2020-11-07 05:22:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:20,503 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:22:20,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:20,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:20,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:22:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 05:22:20,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649483758] [2020-11-07 05:22:20,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:20,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:22:20,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470377454] [2020-11-07 05:22:20,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:22:20,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:20,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:22:20,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:22:20,705 INFO L87 Difference]: Start difference. First operand 1248 states and 1477 transitions. Second operand 7 states. [2020-11-07 05:22:20,960 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:22:24,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:24,138 INFO L93 Difference]: Finished difference Result 3418 states and 4190 transitions. [2020-11-07 05:22:24,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:22:24,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-11-07 05:22:24,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:24,159 INFO L225 Difference]: With dead ends: 3418 [2020-11-07 05:22:24,160 INFO L226 Difference]: Without dead ends: 2202 [2020-11-07 05:22:24,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:22:24,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2020-11-07 05:22:24,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 2136. [2020-11-07 05:22:24,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-11-07 05:22:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 2544 transitions. [2020-11-07 05:22:24,772 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 2544 transitions. Word has length 184 [2020-11-07 05:22:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:24,773 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 2544 transitions. [2020-11-07 05:22:24,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:22:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 2544 transitions. [2020-11-07 05:22:24,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-11-07 05:22:24,782 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:24,783 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:22:24,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:22:24,783 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:24,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:24,784 INFO L82 PathProgramCache]: Analyzing trace with hash 755680268, now seen corresponding path program 1 times [2020-11-07 05:22:24,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:24,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727734434] [2020-11-07 05:22:24,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:25,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:25,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:25,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:22:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-07 05:22:25,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727734434] [2020-11-07 05:22:25,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:25,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:22:25,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486706684] [2020-11-07 05:22:25,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:22:25,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:25,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:22:25,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:22:25,414 INFO L87 Difference]: Start difference. First operand 2136 states and 2544 transitions. Second operand 11 states. [2020-11-07 05:22:25,774 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:22:26,272 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:22:26,878 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 05:22:31,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:31,786 INFO L93 Difference]: Finished difference Result 5599 states and 6814 transitions. [2020-11-07 05:22:31,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:22:31,787 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 195 [2020-11-07 05:22:31,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:31,814 INFO L225 Difference]: With dead ends: 5599 [2020-11-07 05:22:31,814 INFO L226 Difference]: Without dead ends: 3353 [2020-11-07 05:22:31,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:22:31,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2020-11-07 05:22:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 2874. [2020-11-07 05:22:32,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2874 states. [2020-11-07 05:22:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 3341 transitions. [2020-11-07 05:22:32,486 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 3341 transitions. Word has length 195 [2020-11-07 05:22:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:32,487 INFO L481 AbstractCegarLoop]: Abstraction has 2874 states and 3341 transitions. [2020-11-07 05:22:32,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:22:32,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 3341 transitions. [2020-11-07 05:22:32,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-11-07 05:22:32,499 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:32,500 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:22:32,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:22:32,500 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:32,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:32,501 INFO L82 PathProgramCache]: Analyzing trace with hash -157780183, now seen corresponding path program 1 times [2020-11-07 05:22:32,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:32,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386246140] [2020-11-07 05:22:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:32,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:32,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:32,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:22:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:32,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-11-07 05:22:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-07 05:22:32,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386246140] [2020-11-07 05:22:32,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:32,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:22:32,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514136283] [2020-11-07 05:22:32,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:22:32,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:32,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:22:32,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:22:32,829 INFO L87 Difference]: Start difference. First operand 2874 states and 3341 transitions. Second operand 7 states. [2020-11-07 05:22:33,840 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:22:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:36,568 INFO L93 Difference]: Finished difference Result 6617 states and 7851 transitions. [2020-11-07 05:22:36,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 05:22:36,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-11-07 05:22:36,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:36,600 INFO L225 Difference]: With dead ends: 6617 [2020-11-07 05:22:36,600 INFO L226 Difference]: Without dead ends: 3916 [2020-11-07 05:22:36,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:22:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3916 states. [2020-11-07 05:22:37,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3916 to 3688. [2020-11-07 05:22:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3688 states. [2020-11-07 05:22:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 4336 transitions. [2020-11-07 05:22:37,457 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 4336 transitions. Word has length 218 [2020-11-07 05:22:37,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:37,457 INFO L481 AbstractCegarLoop]: Abstraction has 3688 states and 4336 transitions. [2020-11-07 05:22:37,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:22:37,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 4336 transitions. [2020-11-07 05:22:37,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-11-07 05:22:37,469 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:37,470 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:22:37,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:22:37,471 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:37,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:37,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1796871503, now seen corresponding path program 1 times [2020-11-07 05:22:37,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:37,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758456491] [2020-11-07 05:22:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:37,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:37,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:22:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 05:22:37,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758456491] [2020-11-07 05:22:37,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:37,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:22:37,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914280306] [2020-11-07 05:22:37,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:22:37,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:37,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:22:37,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:22:37,811 INFO L87 Difference]: Start difference. First operand 3688 states and 4336 transitions. Second operand 8 states. [2020-11-07 05:22:38,619 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:22:39,556 WARN L194 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:22:42,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:42,419 INFO L93 Difference]: Finished difference Result 7609 states and 9003 transitions. [2020-11-07 05:22:42,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 05:22:42,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-11-07 05:22:42,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:42,449 INFO L225 Difference]: With dead ends: 7609 [2020-11-07 05:22:42,449 INFO L226 Difference]: Without dead ends: 4094 [2020-11-07 05:22:42,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:22:42,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2020-11-07 05:22:43,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3998. [2020-11-07 05:22:43,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-11-07 05:22:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 4689 transitions. [2020-11-07 05:22:43,217 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 4689 transitions. Word has length 230 [2020-11-07 05:22:43,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:43,218 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 4689 transitions. [2020-11-07 05:22:43,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:22:43,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 4689 transitions. [2020-11-07 05:22:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-11-07 05:22:43,231 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:43,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:22:43,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:22:43,232 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:43,233 INFO L82 PathProgramCache]: Analyzing trace with hash 912048621, now seen corresponding path program 1 times [2020-11-07 05:22:43,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:43,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687546666] [2020-11-07 05:22:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:43,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:43,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:43,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:22:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 05:22:43,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687546666] [2020-11-07 05:22:43,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:43,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:22:43,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941789748] [2020-11-07 05:22:43,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:22:43,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:43,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:22:43,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:22:43,522 INFO L87 Difference]: Start difference. First operand 3998 states and 4689 transitions. Second operand 7 states. [2020-11-07 05:22:47,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:47,082 INFO L93 Difference]: Finished difference Result 8003 states and 9369 transitions. [2020-11-07 05:22:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 05:22:47,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-11-07 05:22:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:47,152 INFO L225 Difference]: With dead ends: 8003 [2020-11-07 05:22:47,152 INFO L226 Difference]: Without dead ends: 4021 [2020-11-07 05:22:47,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:22:47,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2020-11-07 05:22:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3968. [2020-11-07 05:22:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3968 states. [2020-11-07 05:22:47,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 4466 transitions. [2020-11-07 05:22:47,742 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 4466 transitions. Word has length 244 [2020-11-07 05:22:47,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:47,742 INFO L481 AbstractCegarLoop]: Abstraction has 3968 states and 4466 transitions. [2020-11-07 05:22:47,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:22:47,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 4466 transitions. [2020-11-07 05:22:47,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-11-07 05:22:47,756 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:47,757 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:22:47,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 05:22:47,757 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:47,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:47,758 INFO L82 PathProgramCache]: Analyzing trace with hash -854649261, now seen corresponding path program 1 times [2020-11-07 05:22:47,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:47,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090762360] [2020-11-07 05:22:47,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:47,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:48,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:48,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:22:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:48,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 05:22:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 82 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-07 05:22:48,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090762360] [2020-11-07 05:22:48,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:48,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:22:48,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974515699] [2020-11-07 05:22:48,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:22:48,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:48,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:22:48,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:22:48,450 INFO L87 Difference]: Start difference. First operand 3968 states and 4466 transitions. Second operand 11 states. [2020-11-07 05:22:49,631 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:22:49,863 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:22:50,501 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:22:53,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:53,178 INFO L93 Difference]: Finished difference Result 8878 states and 10175 transitions. [2020-11-07 05:22:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 05:22:53,185 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 247 [2020-11-07 05:22:53,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:53,213 INFO L225 Difference]: With dead ends: 8878 [2020-11-07 05:22:53,214 INFO L226 Difference]: Without dead ends: 4810 [2020-11-07 05:22:53,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:22:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2020-11-07 05:22:53,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4206. [2020-11-07 05:22:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4206 states. [2020-11-07 05:22:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4206 states to 4206 states and 4680 transitions. [2020-11-07 05:22:53,971 INFO L78 Accepts]: Start accepts. Automaton has 4206 states and 4680 transitions. Word has length 247 [2020-11-07 05:22:53,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:53,972 INFO L481 AbstractCegarLoop]: Abstraction has 4206 states and 4680 transitions. [2020-11-07 05:22:53,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:22:53,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4206 states and 4680 transitions. [2020-11-07 05:22:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-11-07 05:22:53,983 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:53,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:22:53,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 05:22:53,985 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:53,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:53,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1743339092, now seen corresponding path program 1 times [2020-11-07 05:22:53,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:53,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241669768] [2020-11-07 05:22:53,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:54,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:54,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:54,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:22:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-07 05:22:54,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241669768] [2020-11-07 05:22:54,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:54,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:22:54,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467586469] [2020-11-07 05:22:54,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:22:54,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:54,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:22:54,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:22:54,624 INFO L87 Difference]: Start difference. First operand 4206 states and 4680 transitions. Second operand 11 states. [2020-11-07 05:22:55,783 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:22:56,654 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:22:57,184 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:22:57,575 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 05:22:58,122 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 05:23:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:23:02,310 INFO L93 Difference]: Finished difference Result 11310 states and 12753 transitions. [2020-11-07 05:23:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 05:23:02,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 250 [2020-11-07 05:23:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:23:02,350 INFO L225 Difference]: With dead ends: 11310 [2020-11-07 05:23:02,351 INFO L226 Difference]: Without dead ends: 6571 [2020-11-07 05:23:02,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:23:02,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6571 states. [2020-11-07 05:23:03,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6571 to 5839. [2020-11-07 05:23:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5839 states. [2020-11-07 05:23:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 6398 transitions. [2020-11-07 05:23:03,360 INFO L78 Accepts]: Start accepts. Automaton has 5839 states and 6398 transitions. Word has length 250 [2020-11-07 05:23:03,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:23:03,361 INFO L481 AbstractCegarLoop]: Abstraction has 5839 states and 6398 transitions. [2020-11-07 05:23:03,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:23:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand 5839 states and 6398 transitions. [2020-11-07 05:23:03,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-11-07 05:23:03,375 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:23:03,375 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:23:03,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 05:23:03,375 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:23:03,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:23:03,376 INFO L82 PathProgramCache]: Analyzing trace with hash 2082241577, now seen corresponding path program 1 times [2020-11-07 05:23:03,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:23:03,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553472621] [2020-11-07 05:23:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:23:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:03,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:23:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:03,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:23:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:23:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:03,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 05:23:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 165 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-07 05:23:04,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553472621] [2020-11-07 05:23:04,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:23:04,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-07 05:23:04,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711236689] [2020-11-07 05:23:04,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 05:23:04,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:23:04,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 05:23:04,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:23:04,013 INFO L87 Difference]: Start difference. First operand 5839 states and 6398 transitions. Second operand 16 states. [2020-11-07 05:23:04,278 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:23:04,623 WARN L194 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-11-07 05:23:05,163 WARN L194 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-11-07 05:23:05,788 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 05:23:06,322 WARN L194 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-11-07 05:23:06,556 WARN L194 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:23:06,847 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:23:07,270 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:23:08,248 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:23:08,893 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:23:09,403 WARN L194 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-11-07 05:23:09,700 WARN L194 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-11-07 05:23:10,191 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:23:10,399 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 05:23:11,630 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:23:11,893 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 05:23:12,885 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:23:13,449 WARN L194 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-11-07 05:23:16,100 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:23:17,255 WARN L194 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-11-07 05:23:17,894 WARN L194 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-11-07 05:23:18,441 WARN L194 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-11-07 05:23:19,752 WARN L194 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-11-07 05:23:21,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:23:21,902 INFO L93 Difference]: Finished difference Result 14091 states and 15559 transitions. [2020-11-07 05:23:21,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-11-07 05:23:21,903 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 288 [2020-11-07 05:23:21,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:23:21,940 INFO L225 Difference]: With dead ends: 14091 [2020-11-07 05:23:21,941 INFO L226 Difference]: Without dead ends: 8425 [2020-11-07 05:23:21,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2285 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1096, Invalid=5546, Unknown=0, NotChecked=0, Total=6642 [2020-11-07 05:23:21,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8425 states. [2020-11-07 05:23:23,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8425 to 7159. [2020-11-07 05:23:23,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7159 states. [2020-11-07 05:23:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7159 states to 7159 states and 7809 transitions. [2020-11-07 05:23:23,597 INFO L78 Accepts]: Start accepts. Automaton has 7159 states and 7809 transitions. Word has length 288 [2020-11-07 05:23:23,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:23:23,598 INFO L481 AbstractCegarLoop]: Abstraction has 7159 states and 7809 transitions. [2020-11-07 05:23:23,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 05:23:23,598 INFO L276 IsEmpty]: Start isEmpty. Operand 7159 states and 7809 transitions. [2020-11-07 05:23:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-11-07 05:23:23,614 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:23:23,615 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:23:23,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 05:23:23,615 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:23:23,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:23:23,616 INFO L82 PathProgramCache]: Analyzing trace with hash 296695306, now seen corresponding path program 1 times [2020-11-07 05:23:23,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:23:23,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47893423] [2020-11-07 05:23:23,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:23:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:23,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:23:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:23,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:23:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:23,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 05:23:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:23,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 05:23:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 143 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-11-07 05:23:24,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47893423] [2020-11-07 05:23:24,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:23:24,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:23:24,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439313663] [2020-11-07 05:23:24,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:23:24,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:23:24,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:23:24,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:23:24,353 INFO L87 Difference]: Start difference. First operand 7159 states and 7809 transitions. Second operand 11 states. [2020-11-07 05:23:24,536 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:23:25,062 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:23:26,239 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:23:26,694 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 05:23:26,865 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:23:30,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:23:30,159 INFO L93 Difference]: Finished difference Result 14469 states and 15718 transitions. [2020-11-07 05:23:30,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:23:30,160 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 290 [2020-11-07 05:23:30,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:23:30,192 INFO L225 Difference]: With dead ends: 14469 [2020-11-07 05:23:30,193 INFO L226 Difference]: Without dead ends: 7611 [2020-11-07 05:23:30,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:23:30,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7611 states. [2020-11-07 05:23:31,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7611 to 7144. [2020-11-07 05:23:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7144 states. [2020-11-07 05:23:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7144 states to 7144 states and 7751 transitions. [2020-11-07 05:23:31,587 INFO L78 Accepts]: Start accepts. Automaton has 7144 states and 7751 transitions. Word has length 290 [2020-11-07 05:23:31,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:23:31,587 INFO L481 AbstractCegarLoop]: Abstraction has 7144 states and 7751 transitions. [2020-11-07 05:23:31,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:23:31,588 INFO L276 IsEmpty]: Start isEmpty. Operand 7144 states and 7751 transitions. [2020-11-07 05:23:31,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-11-07 05:23:31,602 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:23:31,602 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:23:31,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 05:23:31,603 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:23:31,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:23:31,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1148795768, now seen corresponding path program 1 times [2020-11-07 05:23:31,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:23:31,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206927176] [2020-11-07 05:23:31,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:23:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:31,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:23:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:31,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:23:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 05:23:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:31,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 05:23:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 212 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-07 05:23:32,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206927176] [2020-11-07 05:23:32,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:23:32,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:23:32,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211848871] [2020-11-07 05:23:32,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:23:32,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:23:32,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:23:32,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:23:32,050 INFO L87 Difference]: Start difference. First operand 7144 states and 7751 transitions. Second operand 10 states. [2020-11-07 05:23:32,410 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:23:32,714 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:23:33,541 WARN L194 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-11-07 05:23:33,950 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:23:35,518 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:23:35,909 WARN L194 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-11-07 05:23:37,054 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:23:38,022 WARN L194 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-11-07 05:23:38,476 WARN L194 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-11-07 05:23:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:23:41,251 INFO L93 Difference]: Finished difference Result 14616 states and 15879 transitions. [2020-11-07 05:23:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-07 05:23:41,252 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 306 [2020-11-07 05:23:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:23:41,299 INFO L225 Difference]: With dead ends: 14616 [2020-11-07 05:23:41,299 INFO L226 Difference]: Without dead ends: 7650 [2020-11-07 05:23:41,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=303, Invalid=1179, Unknown=0, NotChecked=0, Total=1482 [2020-11-07 05:23:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7650 states. [2020-11-07 05:23:42,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7650 to 6706. [2020-11-07 05:23:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6706 states. [2020-11-07 05:23:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6706 states to 6706 states and 7144 transitions. [2020-11-07 05:23:42,660 INFO L78 Accepts]: Start accepts. Automaton has 6706 states and 7144 transitions. Word has length 306 [2020-11-07 05:23:42,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:23:42,660 INFO L481 AbstractCegarLoop]: Abstraction has 6706 states and 7144 transitions. [2020-11-07 05:23:42,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:23:42,661 INFO L276 IsEmpty]: Start isEmpty. Operand 6706 states and 7144 transitions. [2020-11-07 05:23:42,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-11-07 05:23:42,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:23:42,670 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:23:42,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 05:23:42,671 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:23:42,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:23:42,671 INFO L82 PathProgramCache]: Analyzing trace with hash -110496964, now seen corresponding path program 1 times [2020-11-07 05:23:42,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:23:42,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709238891] [2020-11-07 05:23:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:23:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:42,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:23:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:42,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:23:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:42,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 05:23:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:43,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-07 05:23:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-11-07 05:23:43,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709238891] [2020-11-07 05:23:43,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:23:43,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:23:43,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069893757] [2020-11-07 05:23:43,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:23:43,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:23:43,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:23:43,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:23:43,317 INFO L87 Difference]: Start difference. First operand 6706 states and 7144 transitions. Second operand 11 states. [2020-11-07 05:23:44,307 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:23:45,188 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:23:46,682 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:23:47,144 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 05:23:50,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:23:50,531 INFO L93 Difference]: Finished difference Result 13864 states and 14738 transitions. [2020-11-07 05:23:50,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:23:50,532 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 312 [2020-11-07 05:23:50,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:23:50,558 INFO L225 Difference]: With dead ends: 13864 [2020-11-07 05:23:50,558 INFO L226 Difference]: Without dead ends: 7433 [2020-11-07 05:23:50,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:23:50,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7433 states. [2020-11-07 05:23:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7433 to 6683. [2020-11-07 05:23:51,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6683 states. [2020-11-07 05:23:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6683 states to 6683 states and 7102 transitions. [2020-11-07 05:23:51,966 INFO L78 Accepts]: Start accepts. Automaton has 6683 states and 7102 transitions. Word has length 312 [2020-11-07 05:23:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:23:51,967 INFO L481 AbstractCegarLoop]: Abstraction has 6683 states and 7102 transitions. [2020-11-07 05:23:51,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:23:51,967 INFO L276 IsEmpty]: Start isEmpty. Operand 6683 states and 7102 transitions. [2020-11-07 05:23:51,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-11-07 05:23:51,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:23:51,977 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:23:51,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 05:23:51,977 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:23:51,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:23:51,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1077043949, now seen corresponding path program 1 times [2020-11-07 05:23:51,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:23:51,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478407407] [2020-11-07 05:23:51,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:23:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:52,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:23:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:52,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:23:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:52,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 05:23:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:52,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-07 05:23:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:52,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-11-07 05:23:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 05:23:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 239 proven. 35 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-11-07 05:23:52,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478407407] [2020-11-07 05:23:52,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:23:52,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:23:52,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088679694] [2020-11-07 05:23:52,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:23:52,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:23:52,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:23:52,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:23:52,351 INFO L87 Difference]: Start difference. First operand 6683 states and 7102 transitions. Second operand 10 states. [2020-11-07 05:23:52,563 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:23:52,833 WARN L194 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-11-07 05:23:53,572 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:23:53,853 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:23:55,474 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:23:56,105 WARN L194 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-11-07 05:23:56,784 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:23:57,133 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:23:58,747 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:23:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:23:59,700 INFO L93 Difference]: Finished difference Result 13955 states and 14884 transitions. [2020-11-07 05:23:59,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-07 05:23:59,700 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 340 [2020-11-07 05:23:59,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:23:59,724 INFO L225 Difference]: With dead ends: 13955 [2020-11-07 05:23:59,724 INFO L226 Difference]: Without dead ends: 7450 [2020-11-07 05:23:59,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2020-11-07 05:23:59,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7450 states. [2020-11-07 05:24:01,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7450 to 6647. [2020-11-07 05:24:01,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6647 states. [2020-11-07 05:24:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6647 states to 6647 states and 7029 transitions. [2020-11-07 05:24:01,093 INFO L78 Accepts]: Start accepts. Automaton has 6647 states and 7029 transitions. Word has length 340 [2020-11-07 05:24:01,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:24:01,094 INFO L481 AbstractCegarLoop]: Abstraction has 6647 states and 7029 transitions. [2020-11-07 05:24:01,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:24:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand 6647 states and 7029 transitions. [2020-11-07 05:24:01,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-11-07 05:24:01,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:24:01,106 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:24:01,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 05:24:01,106 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:24:01,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:24:01,107 INFO L82 PathProgramCache]: Analyzing trace with hash -404534197, now seen corresponding path program 1 times [2020-11-07 05:24:01,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:24:01,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511340799] [2020-11-07 05:24:01,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:24:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:01,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:24:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:01,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:24:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:24:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:01,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 05:24:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 200 proven. 3 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-11-07 05:24:01,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511340799] [2020-11-07 05:24:01,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:24:01,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:24:01,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203343629] [2020-11-07 05:24:01,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:24:01,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:24:01,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:24:01,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:24:01,773 INFO L87 Difference]: Start difference. First operand 6647 states and 7029 transitions. Second operand 11 states. [2020-11-07 05:24:01,957 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:24:02,115 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:24:03,951 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:24:04,276 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:24:04,454 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 05:24:06,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:24:06,509 INFO L93 Difference]: Finished difference Result 12784 states and 13485 transitions. [2020-11-07 05:24:06,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 05:24:06,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 347 [2020-11-07 05:24:06,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:24:06,532 INFO L225 Difference]: With dead ends: 12784 [2020-11-07 05:24:06,532 INFO L226 Difference]: Without dead ends: 6507 [2020-11-07 05:24:06,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:24:06,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6507 states. [2020-11-07 05:24:07,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6507 to 6478. [2020-11-07 05:24:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6478 states. [2020-11-07 05:24:07,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6478 states to 6478 states and 6839 transitions. [2020-11-07 05:24:07,898 INFO L78 Accepts]: Start accepts. Automaton has 6478 states and 6839 transitions. Word has length 347 [2020-11-07 05:24:07,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:24:07,899 INFO L481 AbstractCegarLoop]: Abstraction has 6478 states and 6839 transitions. [2020-11-07 05:24:07,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:24:07,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6478 states and 6839 transitions. [2020-11-07 05:24:07,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-11-07 05:24:07,908 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:24:07,908 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:24:07,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 05:24:07,909 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:24:07,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:24:07,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1454021021, now seen corresponding path program 1 times [2020-11-07 05:24:07,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:24:07,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658651053] [2020-11-07 05:24:07,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:24:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:08,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:24:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:08,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:24:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:08,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:24:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:08,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 05:24:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:08,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-07 05:24:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:08,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-11-07 05:24:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:08,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-11-07 05:24:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 299 proven. 87 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-11-07 05:24:08,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658651053] [2020-11-07 05:24:08,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:24:08,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-11-07 05:24:08,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605659242] [2020-11-07 05:24:08,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-07 05:24:08,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:24:08,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-07 05:24:08,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:24:08,609 INFO L87 Difference]: Start difference. First operand 6478 states and 6839 transitions. Second operand 17 states. [2020-11-07 05:24:08,819 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:24:09,161 WARN L194 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-11-07 05:24:10,152 WARN L194 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-11-07 05:24:10,551 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:24:11,127 WARN L194 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-11-07 05:24:12,140 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:24:12,356 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 05:24:12,680 WARN L194 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-11-07 05:24:12,948 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:24:13,739 WARN L194 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-11-07 05:24:14,622 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:24:15,670 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-11-07 05:24:16,022 WARN L194 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-07 05:24:16,241 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 05:24:17,079 WARN L194 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-11-07 05:24:18,505 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:24:18,671 WARN L194 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 05:24:19,270 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:24:20,461 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:24:21,171 WARN L194 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2020-11-07 05:24:21,413 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:24:21,561 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:24:22,632 WARN L194 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:24:23,091 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 05:24:23,896 WARN L194 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2020-11-07 05:24:24,583 WARN L194 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-11-07 05:24:25,215 WARN L194 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-11-07 05:24:26,164 WARN L194 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 05:24:28,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:24:28,135 INFO L93 Difference]: Finished difference Result 14758 states and 15611 transitions. [2020-11-07 05:24:28,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-11-07 05:24:28,136 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 394 [2020-11-07 05:24:28,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:24:28,164 INFO L225 Difference]: With dead ends: 14758 [2020-11-07 05:24:28,164 INFO L226 Difference]: Without dead ends: 8458 [2020-11-07 05:24:28,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3128 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1114, Invalid=7442, Unknown=0, NotChecked=0, Total=8556 [2020-11-07 05:24:28,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8458 states. [2020-11-07 05:24:29,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8458 to 6613. [2020-11-07 05:24:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6613 states. [2020-11-07 05:24:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6613 states to 6613 states and 6956 transitions. [2020-11-07 05:24:29,587 INFO L78 Accepts]: Start accepts. Automaton has 6613 states and 6956 transitions. Word has length 394 [2020-11-07 05:24:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:24:29,588 INFO L481 AbstractCegarLoop]: Abstraction has 6613 states and 6956 transitions. [2020-11-07 05:24:29,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-07 05:24:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 6613 states and 6956 transitions. [2020-11-07 05:24:29,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-11-07 05:24:29,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:24:29,596 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:24:29,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 05:24:29,596 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:24:29,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:24:29,597 INFO L82 PathProgramCache]: Analyzing trace with hash 958765504, now seen corresponding path program 1 times [2020-11-07 05:24:29,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:24:29,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641050210] [2020-11-07 05:24:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:24:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:29,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:24:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:29,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:24:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:29,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:24:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:29,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 05:24:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:29,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-07 05:24:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:29,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-11-07 05:24:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:29,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-11-07 05:24:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:24:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 275 proven. 52 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-11-07 05:24:30,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641050210] [2020-11-07 05:24:30,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:24:30,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:24:30,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618044350] [2020-11-07 05:24:30,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:24:30,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:24:30,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:24:30,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:24:30,081 INFO L87 Difference]: Start difference. First operand 6613 states and 6956 transitions. Second operand 7 states. [2020-11-07 05:24:30,309 WARN L194 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:24:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:24:33,533 INFO L93 Difference]: Finished difference Result 12799 states and 13429 transitions. [2020-11-07 05:24:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 05:24:33,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 414 [2020-11-07 05:24:33,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:24:33,538 INFO L225 Difference]: With dead ends: 12799 [2020-11-07 05:24:33,539 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 05:24:33,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:24:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 05:24:33,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 05:24:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 05:24:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 05:24:33,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 414 [2020-11-07 05:24:33,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:24:33,559 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 05:24:33,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:24:33,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 05:24:33,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 05:24:33,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 05:24:33,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 05:24:34,155 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:24:49,670 WARN L194 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 115 [2020-11-07 05:24:49,952 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 113 [2020-11-07 05:25:09,567 WARN L194 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-11-07 05:25:46,654 WARN L194 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-11-07 05:25:48,089 WARN L194 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-11-07 05:25:48,291 WARN L194 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-11-07 05:26:06,955 WARN L194 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-11-07 05:27:08,737 WARN L194 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-11-07 05:27:08,877 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-11-07 05:27:09,121 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-11-07 05:27:09,262 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-11-07 05:27:09,402 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-11-07 05:27:09,531 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 116 [2020-11-07 05:27:09,691 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-11-07 05:27:09,834 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-11-07 05:27:10,053 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 116 [2020-11-07 05:27:10,231 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 116 [2020-11-07 05:27:10,346 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2020-11-07 05:27:10,463 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2020-11-07 05:27:10,621 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-11-07 05:27:10,731 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2020-11-07 05:27:10,880 WARN L194 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-11-07 05:27:10,996 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 116 [2020-11-07 05:27:11,106 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2020-11-07 05:27:11,216 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2020-11-07 05:27:11,357 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-11-07 05:27:11,513 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-11-07 05:27:11,623 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2020-11-07 05:27:11,769 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-11-07 05:27:51,795 WARN L194 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-11-07 05:27:52,055 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 150 [2020-11-07 05:27:53,965 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 150 [2020-11-07 05:27:54,520 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 150 [2020-11-07 05:27:56,455 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 150 [2020-11-07 05:28:52,390 WARN L194 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-11-07 05:28:52,592 WARN L194 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-11-07 05:28:52,792 WARN L194 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-11-07 05:28:54,959 WARN L194 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-11-07 05:29:07,096 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-11-07 05:29:11,012 WARN L194 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:29:14,924 WARN L194 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:29:18,799 WARN L194 SmtUtils]: Spent 3.86 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:29:20,249 WARN L194 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:29:21,767 WARN L194 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-11-07 05:29:23,215 WARN L194 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:29:27,102 WARN L194 SmtUtils]: Spent 3.87 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:29:28,606 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-11-07 05:29:32,515 WARN L194 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:29:33,691 WARN L194 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 240 DAG size of output: 86 [2020-11-07 05:29:35,366 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 244 DAG size of output: 85 [2020-11-07 05:29:36,509 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 239 DAG size of output: 82 [2020-11-07 05:29:37,753 WARN L194 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 194 DAG size of output: 86 [2020-11-07 05:29:39,217 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 194 DAG size of output: 85 [2020-11-07 05:29:41,109 WARN L194 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 250 DAG size of output: 88 [2020-11-07 05:29:45,031 WARN L194 SmtUtils]: Spent 3.91 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:29:46,815 WARN L194 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 259 DAG size of output: 89 [2020-11-07 05:29:48,232 WARN L194 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 243 DAG size of output: 86 [2020-11-07 05:29:52,180 WARN L194 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:29:56,105 WARN L194 SmtUtils]: Spent 3.91 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:29:57,205 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 189 DAG size of output: 82 [2020-11-07 05:29:58,349 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 239 DAG size of output: 82 [2020-11-07 05:29:59,560 WARN L194 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 190 DAG size of output: 82 [2020-11-07 05:30:01,282 WARN L194 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 245 DAG size of output: 86 [2020-11-07 05:30:02,359 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2020-11-07 05:30:06,328 WARN L194 SmtUtils]: Spent 3.95 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:30:07,841 WARN L194 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:30:08,940 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 190 DAG size of output: 82 [2020-11-07 05:30:10,785 WARN L194 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 260 DAG size of output: 85 [2020-11-07 05:30:11,966 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 192 DAG size of output: 81 [2020-11-07 05:30:13,575 WARN L194 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 197 DAG size of output: 86 [2020-11-07 05:30:17,578 WARN L194 SmtUtils]: Spent 3.99 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:30:19,279 WARN L194 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 244 DAG size of output: 85 [2020-11-07 05:30:23,262 WARN L194 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:30:24,420 WARN L194 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 239 DAG size of output: 82 [2020-11-07 05:30:25,579 WARN L194 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 192 DAG size of output: 83 [2020-11-07 05:30:26,769 WARN L194 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 194 DAG size of output: 82 [2020-11-07 05:30:30,767 WARN L194 SmtUtils]: Spent 3.99 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:30:32,307 WARN L194 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 190 DAG size of output: 81 [2020-11-07 05:30:33,498 WARN L194 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 192 DAG size of output: 81 [2020-11-07 05:30:34,989 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 195 DAG size of output: 85 [2020-11-07 05:30:36,246 WARN L194 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 189 DAG size of output: 81 [2020-11-07 05:30:38,627 WARN L194 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 292 DAG size of output: 97 [2020-11-07 05:30:40,187 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 198 DAG size of output: 82 [2020-11-07 05:30:41,334 WARN L194 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 189 DAG size of output: 82 [2020-11-07 05:30:45,304 WARN L194 SmtUtils]: Spent 3.96 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:30:46,892 WARN L194 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 195 DAG size of output: 83 [2020-11-07 05:30:48,388 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 245 DAG size of output: 84 [2020-11-07 05:30:49,731 WARN L194 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 197 DAG size of output: 87 [2020-11-07 05:30:50,837 WARN L194 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 192 DAG size of output: 84 [2020-11-07 05:30:52,054 WARN L194 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 190 DAG size of output: 79 [2020-11-07 05:30:53,914 WARN L194 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 253 DAG size of output: 88 [2020-11-07 05:30:54,999 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 190 DAG size of output: 80 [2020-11-07 05:30:56,217 WARN L194 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 240 DAG size of output: 86 [2020-11-07 05:30:57,357 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 194 DAG size of output: 82 [2020-11-07 05:30:58,627 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 189 DAG size of output: 81 [2020-11-07 05:31:02,624 WARN L194 SmtUtils]: Spent 3.98 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:31:03,880 WARN L194 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 191 DAG size of output: 84 [2020-11-07 05:31:05,314 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 214 DAG size of output: 67 [2020-11-07 05:31:06,882 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-11-07 05:31:07,966 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2020-11-07 05:31:09,062 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2020-11-07 05:31:13,068 WARN L194 SmtUtils]: Spent 3.99 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:31:14,563 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:31:18,542 WARN L194 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:31:22,562 WARN L194 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:31:26,522 WARN L194 SmtUtils]: Spent 3.95 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:31:28,016 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:31:29,518 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:31:31,022 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:31:34,997 WARN L194 SmtUtils]: Spent 3.96 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:31:39,031 WARN L194 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:31:40,140 WARN L194 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2020-11-07 05:31:42,310 WARN L194 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 214 DAG size of output: 93 [2020-11-07 05:31:46,353 WARN L194 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:31:47,586 WARN L194 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 190 DAG size of output: 79 [2020-11-07 05:31:49,510 WARN L194 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 252 DAG size of output: 88 [2020-11-07 05:31:50,863 WARN L194 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 192 DAG size of output: 87 [2020-11-07 05:31:52,416 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 191 DAG size of output: 83 [2020-11-07 05:31:54,157 WARN L194 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 200 DAG size of output: 85 [2020-11-07 05:31:56,296 WARN L194 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 251 DAG size of output: 85 [2020-11-07 05:31:57,978 WARN L194 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 253 DAG size of output: 91 [2020-11-07 05:31:59,498 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 194 DAG size of output: 85 [2020-11-07 05:32:01,399 WARN L194 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 250 DAG size of output: 82 [2020-11-07 05:32:02,620 WARN L194 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 195 DAG size of output: 82 [2020-11-07 05:32:06,684 WARN L194 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:32:07,908 WARN L194 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 196 DAG size of output: 85 [2020-11-07 05:32:09,170 WARN L194 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 197 DAG size of output: 84 [2020-11-07 05:32:10,280 WARN L194 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 190 DAG size of output: 80 [2020-11-07 05:32:11,509 WARN L194 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 195 DAG size of output: 84 [2020-11-07 05:32:13,091 WARN L194 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 202 DAG size of output: 83 [2020-11-07 05:32:14,664 WARN L194 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-11-07 05:32:15,766 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 190 DAG size of output: 80 [2020-11-07 05:32:19,815 WARN L194 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:32:23,900 WARN L194 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:32:25,418 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:32:29,481 WARN L194 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:32:33,879 WARN L194 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:32:38,279 WARN L194 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:32:39,918 WARN L194 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:32:41,293 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 188 DAG size of output: 80 [2020-11-07 05:32:43,601 WARN L194 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 213 DAG size of output: 94 [2020-11-07 05:32:47,978 WARN L194 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:32:49,232 WARN L194 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 190 DAG size of output: 80 [2020-11-07 05:32:50,435 WARN L194 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2020-11-07 05:32:51,798 WARN L194 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 189 DAG size of output: 83 [2020-11-07 05:32:54,422 WARN L194 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 279 DAG size of output: 93 [2020-11-07 05:32:56,396 WARN L194 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 246 DAG size of output: 87 [2020-11-07 05:32:57,662 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 194 DAG size of output: 82 [2020-11-07 05:32:59,067 WARN L194 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 205 DAG size of output: 86 [2020-11-07 05:33:00,680 WARN L194 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 193 DAG size of output: 86 [2020-11-07 05:33:02,008 WARN L194 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 190 DAG size of output: 79 [2020-11-07 05:33:03,427 WARN L194 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 203 DAG size of output: 81 [2020-11-07 05:33:07,750 WARN L194 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:33:09,096 WARN L194 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 240 DAG size of output: 86 [2020-11-07 05:33:13,523 WARN L194 SmtUtils]: Spent 4.42 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:33:15,394 WARN L194 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 200 DAG size of output: 85 [2020-11-07 05:33:16,997 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:33:18,669 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-11-07 05:33:22,958 WARN L194 SmtUtils]: Spent 4.28 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:33:24,676 WARN L194 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 253 DAG size of output: 84 [2020-11-07 05:33:26,644 WARN L194 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 200 DAG size of output: 86 [2020-11-07 05:33:30,951 WARN L194 SmtUtils]: Spent 4.29 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:33:32,299 WARN L194 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 195 DAG size of output: 84 [2020-11-07 05:33:33,908 WARN L194 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 192 DAG size of output: 83 [2020-11-07 05:33:35,587 WARN L194 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 191 DAG size of output: 83 [2020-11-07 05:33:37,239 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 197 DAG size of output: 82 [2020-11-07 05:33:38,501 WARN L194 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 192 DAG size of output: 81 [2020-11-07 05:33:39,795 WARN L194 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 196 DAG size of output: 85 [2020-11-07 05:33:44,097 WARN L194 SmtUtils]: Spent 4.29 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:33:46,271 WARN L194 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 240 DAG size of output: 84 [2020-11-07 05:33:47,540 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 193 DAG size of output: 82 [2020-11-07 05:33:49,545 WARN L194 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 204 DAG size of output: 88 [2020-11-07 05:33:51,088 WARN L194 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 191 DAG size of output: 82 [2020-11-07 05:33:52,329 WARN L194 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 194 DAG size of output: 81 [2020-11-07 05:33:54,046 WARN L194 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 240 DAG size of output: 85 [2020-11-07 05:33:55,310 WARN L194 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 192 DAG size of output: 81 [2020-11-07 05:33:56,667 WARN L194 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 201 DAG size of output: 86 [2020-11-07 05:33:57,958 WARN L194 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 195 DAG size of output: 79 [2020-11-07 05:33:59,370 WARN L194 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 202 DAG size of output: 85 [2020-11-07 05:34:00,818 WARN L194 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 206 DAG size of output: 91 [2020-11-07 05:34:02,039 WARN L194 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 189 DAG size of output: 80 [2020-11-07 05:34:03,388 WARN L194 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 195 DAG size of output: 83 [2020-11-07 05:34:04,717 WARN L194 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 193 DAG size of output: 82 [2020-11-07 05:34:07,141 WARN L194 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 251 DAG size of output: 95 [2020-11-07 05:34:08,447 WARN L194 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 197 DAG size of output: 84 [2020-11-07 05:34:10,057 WARN L194 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-11-07 05:34:11,535 WARN L194 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 214 DAG size of output: 67 [2020-11-07 05:34:15,627 WARN L194 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:34:19,710 WARN L194 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:34:21,197 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 214 DAG size of output: 67 [2020-11-07 05:34:22,679 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 214 DAG size of output: 67 [2020-11-07 05:34:24,241 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:34:25,536 WARN L194 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 195 DAG size of output: 80 [2020-11-07 05:34:29,657 WARN L194 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:34:31,124 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 194 DAG size of output: 80 [2020-11-07 05:34:32,810 WARN L194 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 202 DAG size of output: 83 [2020-11-07 05:34:34,111 WARN L194 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 194 DAG size of output: 83 [2020-11-07 05:34:38,275 WARN L194 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:34:42,453 WARN L194 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:34:43,949 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 248 DAG size of output: 83 [2020-11-07 05:34:45,557 WARN L194 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 193 DAG size of output: 86 [2020-11-07 05:34:49,704 WARN L194 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-11-07 05:34:51,267 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:34:52,821 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:34:54,386 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:34:58,510 WARN L194 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:35:00,129 WARN L194 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-11-07 05:35:01,712 WARN L194 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:35:05,825 WARN L194 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-11-07 05:35:07,387 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-11-07 05:35:11,491 WARN L194 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 326 DAG size of output: 102