/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_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:21:45,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:21:45,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:21:45,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 05:21:45,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:21:45,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:21:45,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:21:45,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:21:45,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:21:45,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:21:45,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:21:45,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:21:45,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:21:45,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:21:45,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:21:45,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:21:45,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:21:45,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:21:45,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:21:45,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:21:45,673 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 05:21:45,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:21:45,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:21:45,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:21:45,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:21:45,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:21:45,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:21:45,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:21:45,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:21:45,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:21:45,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:21:45,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:21:45,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:21:45,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:21:45,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:21:45,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:21:45,704 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:21:45,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:21:45,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:21:45,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:21:45,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:21:45,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:21:45,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:21:45,706 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:21:46,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:21:46,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:21:46,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:21:46,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:21:46,156 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:21:46,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-11-07 05:21:46,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e884b9a/607f560d1a0547dba78ff68088bc55b5/FLAG63ffb9073 [2020-11-07 05:21:47,036 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:21:47,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-11-07 05:21:47,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e884b9a/607f560d1a0547dba78ff68088bc55b5/FLAG63ffb9073 [2020-11-07 05:21:47,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e884b9a/607f560d1a0547dba78ff68088bc55b5 [2020-11-07 05:21:47,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:21:47,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:21:47,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:21:47,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:21:47,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:21:47,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:21:47" (1/1) ... [2020-11-07 05:21:47,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e9fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:47, skipping insertion in model container [2020-11-07 05:21:47,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:21:47" (1/1) ... [2020-11-07 05:21:47,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:21:47,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:21:47,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:21:47,953 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:21:48,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:21:48,147 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:21:48,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:48 WrapperNode [2020-11-07 05:21:48,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:21:48,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:21:48,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:21:48,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:21:48,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:48" (1/1) ... [2020-11-07 05:21:48,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:48" (1/1) ... [2020-11-07 05:21:48,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:48" (1/1) ... [2020-11-07 05:21:48,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:48" (1/1) ... [2020-11-07 05:21:48,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:48" (1/1) ... [2020-11-07 05:21:48,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:48" (1/1) ... [2020-11-07 05:21:48,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:48" (1/1) ... [2020-11-07 05:21:48,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:21:48,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:21:48,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:21:48,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:21:48,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:48" (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 05:21:48,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:21:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:21:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:21:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-07 05:21:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:21:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-07 05:21:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:21:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:21:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:21:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:21:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:21:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:21:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:21:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:21:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:21:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:21:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:21:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:21:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:21:49,605 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:21:49,605 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 05:21:49,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:21:49 BoogieIcfgContainer [2020-11-07 05:21:49,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:21:49,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:21:49,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:21:49,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:21:49,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:21:47" (1/3) ... [2020-11-07 05:21:49,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c24f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:21:49, skipping insertion in model container [2020-11-07 05:21:49,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:48" (2/3) ... [2020-11-07 05:21:49,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c24f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:21:49, skipping insertion in model container [2020-11-07 05:21:49,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:21:49" (3/3) ... [2020-11-07 05:21:49,618 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-11-07 05:21:49,636 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:21:49,641 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:21:49,654 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:21:49,679 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:21:49,679 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:21:49,679 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:21:49,679 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:21:49,680 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:21:49,680 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:21:49,680 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:21:49,680 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:21:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2020-11-07 05:21:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-11-07 05:21:49,754 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:49,755 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] [2020-11-07 05:21:49,755 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:49,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:49,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1500080742, now seen corresponding path program 1 times [2020-11-07 05:21:49,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:49,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145929025] [2020-11-07 05:21:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:50,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:21:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:50,684 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 05:21:50,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145929025] [2020-11-07 05:21:50,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:21:50,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:21:50,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739200742] [2020-11-07 05:21:50,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:21:50,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:21:50,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:21:50,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:21:50,716 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 4 states. [2020-11-07 05:21:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:21:53,598 INFO L93 Difference]: Finished difference Result 1353 states and 1752 transitions. [2020-11-07 05:21:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 05:21:53,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-11-07 05:21:53,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:21:53,626 INFO L225 Difference]: With dead ends: 1353 [2020-11-07 05:21:53,627 INFO L226 Difference]: Without dead ends: 750 [2020-11-07 05:21:53,639 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 05:21:53,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-11-07 05:21:53,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 673. [2020-11-07 05:21:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-11-07 05:21:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 789 transitions. [2020-11-07 05:21:53,866 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 789 transitions. Word has length 145 [2020-11-07 05:21:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:21:53,871 INFO L481 AbstractCegarLoop]: Abstraction has 673 states and 789 transitions. [2020-11-07 05:21:53,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:21:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 789 transitions. [2020-11-07 05:21:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-07 05:21:53,904 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:53,904 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] [2020-11-07 05:21:53,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:21:53,905 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:53,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:53,907 INFO L82 PathProgramCache]: Analyzing trace with hash -2014521500, now seen corresponding path program 1 times [2020-11-07 05:21:53,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:53,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740514945] [2020-11-07 05:21:53,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:54,278 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:21:54,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:21:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:54,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:21:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:54,592 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 05:21:54,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740514945] [2020-11-07 05:21:54,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:21:54,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:21:54,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702547391] [2020-11-07 05:21:54,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:21:54,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:21:54,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:21:54,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:21:54,597 INFO L87 Difference]: Start difference. First operand 673 states and 789 transitions. Second operand 11 states. [2020-11-07 05:21:54,840 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:21:55,344 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:21:55,535 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:21:55,964 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 05:21:56,195 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:22:00,434 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 05:22:01,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:01,104 INFO L93 Difference]: Finished difference Result 2531 states and 3317 transitions. [2020-11-07 05:22:01,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 05:22:01,105 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 166 [2020-11-07 05:22:01,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:01,129 INFO L225 Difference]: With dead ends: 2531 [2020-11-07 05:22:01,129 INFO L226 Difference]: Without dead ends: 1631 [2020-11-07 05:22:01,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:22:01,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2020-11-07 05:22:01,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1399. [2020-11-07 05:22:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1399 states. [2020-11-07 05:22:01,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1646 transitions. [2020-11-07 05:22:01,473 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1646 transitions. Word has length 166 [2020-11-07 05:22:01,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:01,474 INFO L481 AbstractCegarLoop]: Abstraction has 1399 states and 1646 transitions. [2020-11-07 05:22:01,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:22:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1646 transitions. [2020-11-07 05:22:01,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-11-07 05:22:01,492 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:01,493 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:22:01,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:22:01,493 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:01,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:01,495 INFO L82 PathProgramCache]: Analyzing trace with hash -402140788, now seen corresponding path program 1 times [2020-11-07 05:22:01,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:01,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456340123] [2020-11-07 05:22:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:01,956 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:22:01,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:02,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:22:02,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456340123] [2020-11-07 05:22:02,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:02,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:22:02,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801469011] [2020-11-07 05:22:02,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:22:02,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:02,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:22:02,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:22:02,385 INFO L87 Difference]: Start difference. First operand 1399 states and 1646 transitions. Second operand 11 states. [2020-11-07 05:22:02,640 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:22:03,197 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:22:03,525 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:22:03,767 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:22:04,734 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:22:09,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:09,104 INFO L93 Difference]: Finished difference Result 1880 states and 2169 transitions. [2020-11-07 05:22:09,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:22:09,105 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 179 [2020-11-07 05:22:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:09,117 INFO L225 Difference]: With dead ends: 1880 [2020-11-07 05:22:09,118 INFO L226 Difference]: Without dead ends: 1627 [2020-11-07 05:22:09,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:22:09,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-11-07 05:22:09,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1395. [2020-11-07 05:22:09,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1395 states. [2020-11-07 05:22:09,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1636 transitions. [2020-11-07 05:22:09,446 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1636 transitions. Word has length 179 [2020-11-07 05:22:09,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:09,446 INFO L481 AbstractCegarLoop]: Abstraction has 1395 states and 1636 transitions. [2020-11-07 05:22:09,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:22:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1636 transitions. [2020-11-07 05:22:09,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-11-07 05:22:09,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:09,453 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] [2020-11-07 05:22:09,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:22:09,453 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:09,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:09,454 INFO L82 PathProgramCache]: Analyzing trace with hash 768704178, now seen corresponding path program 1 times [2020-11-07 05:22:09,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:09,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550931204] [2020-11-07 05:22:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:09,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:09,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:09,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:22:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:09,683 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 05:22:09,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550931204] [2020-11-07 05:22:09,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:09,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:22:09,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412222415] [2020-11-07 05:22:09,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:22:09,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:09,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:22:09,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:22:09,687 INFO L87 Difference]: Start difference. First operand 1395 states and 1636 transitions. Second operand 7 states. [2020-11-07 05:22:13,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:13,092 INFO L93 Difference]: Finished difference Result 3713 states and 4523 transitions. [2020-11-07 05:22:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:22:13,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2020-11-07 05:22:13,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:13,116 INFO L225 Difference]: With dead ends: 3713 [2020-11-07 05:22:13,117 INFO L226 Difference]: Without dead ends: 2350 [2020-11-07 05:22:13,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:22:13,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2020-11-07 05:22:13,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2283. [2020-11-07 05:22:13,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2283 states. [2020-11-07 05:22:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 2718 transitions. [2020-11-07 05:22:13,635 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 2718 transitions. Word has length 183 [2020-11-07 05:22:13,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:13,636 INFO L481 AbstractCegarLoop]: Abstraction has 2283 states and 2718 transitions. [2020-11-07 05:22:13,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:22:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 2718 transitions. [2020-11-07 05:22:13,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-11-07 05:22:13,646 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:13,647 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] [2020-11-07 05:22:13,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:22:13,647 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:13,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:13,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1271303954, now seen corresponding path program 1 times [2020-11-07 05:22:13,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:13,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448671120] [2020-11-07 05:22:13,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:13,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:14,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:14,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:22:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:14,283 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 05:22:14,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448671120] [2020-11-07 05:22:14,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:14,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:22:14,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777929407] [2020-11-07 05:22:14,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:22:14,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:14,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:22:14,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:22:14,287 INFO L87 Difference]: Start difference. First operand 2283 states and 2718 transitions. Second operand 11 states. [2020-11-07 05:22:15,208 WARN L194 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:22:15,644 WARN L194 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 05:22:16,465 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:22:20,190 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 05:22:21,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:21,269 INFO L93 Difference]: Finished difference Result 5893 states and 7182 transitions. [2020-11-07 05:22:21,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 05:22:21,270 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 194 [2020-11-07 05:22:21,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:21,299 INFO L225 Difference]: With dead ends: 5893 [2020-11-07 05:22:21,300 INFO L226 Difference]: Without dead ends: 3661 [2020-11-07 05:22:21,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:22:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2020-11-07 05:22:22,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 3041. [2020-11-07 05:22:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3041 states. [2020-11-07 05:22:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 3578 transitions. [2020-11-07 05:22:22,121 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 3578 transitions. Word has length 194 [2020-11-07 05:22:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:22,122 INFO L481 AbstractCegarLoop]: Abstraction has 3041 states and 3578 transitions. [2020-11-07 05:22:22,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:22:22,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 3578 transitions. [2020-11-07 05:22:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-11-07 05:22:22,139 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:22,140 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-11-07 05:22:22,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:22:22,140 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:22,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:22,143 INFO L82 PathProgramCache]: Analyzing trace with hash 363716375, now seen corresponding path program 1 times [2020-11-07 05:22:22,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:22,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493622315] [2020-11-07 05:22:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:22,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:22,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:22:22,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493622315] [2020-11-07 05:22:22,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:22,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:22:22,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109657234] [2020-11-07 05:22:22,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:22:22,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:22,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:22:22,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:22:22,705 INFO L87 Difference]: Start difference. First operand 3041 states and 3578 transitions. Second operand 11 states. [2020-11-07 05:22:22,915 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:22:24,023 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:22:24,419 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:22:24,824 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:22:27,199 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 05:22:29,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:29,260 INFO L93 Difference]: Finished difference Result 6352 states and 7457 transitions. [2020-11-07 05:22:29,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:22:29,268 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 203 [2020-11-07 05:22:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:29,300 INFO L225 Difference]: With dead ends: 6352 [2020-11-07 05:22:29,300 INFO L226 Difference]: Without dead ends: 3226 [2020-11-07 05:22:29,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:22:29,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2020-11-07 05:22:29,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3029. [2020-11-07 05:22:29,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3029 states. [2020-11-07 05:22:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3029 states to 3029 states and 3529 transitions. [2020-11-07 05:22:29,879 INFO L78 Accepts]: Start accepts. Automaton has 3029 states and 3529 transitions. Word has length 203 [2020-11-07 05:22:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:29,879 INFO L481 AbstractCegarLoop]: Abstraction has 3029 states and 3529 transitions. [2020-11-07 05:22:29,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:22:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3029 states and 3529 transitions. [2020-11-07 05:22:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-11-07 05:22:29,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:29,891 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-07 05:22:29,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:22:29,891 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:29,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:29,892 INFO L82 PathProgramCache]: Analyzing trace with hash -687766128, now seen corresponding path program 1 times [2020-11-07 05:22:29,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:29,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736972615] [2020-11-07 05:22:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:30,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:30,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:30,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:22:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:30,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-11-07 05:22:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 64 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-07 05:22:30,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736972615] [2020-11-07 05:22:30,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:30,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-07 05:22:30,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515913895] [2020-11-07 05:22:30,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 05:22:30,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:30,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 05:22:30,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-07 05:22:30,238 INFO L87 Difference]: Start difference. First operand 3029 states and 3529 transitions. Second operand 9 states. [2020-11-07 05:22:31,113 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:22:32,013 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:22:32,357 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:22:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:36,862 INFO L93 Difference]: Finished difference Result 7196 states and 8381 transitions. [2020-11-07 05:22:36,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-07 05:22:36,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2020-11-07 05:22:36,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:36,894 INFO L225 Difference]: With dead ends: 7196 [2020-11-07 05:22:36,895 INFO L226 Difference]: Without dead ends: 4340 [2020-11-07 05:22:36,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-11-07 05:22:36,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2020-11-07 05:22:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 3912. [2020-11-07 05:22:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3912 states. [2020-11-07 05:22:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 4513 transitions. [2020-11-07 05:22:37,729 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 4513 transitions. Word has length 212 [2020-11-07 05:22:37,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:37,730 INFO L481 AbstractCegarLoop]: Abstraction has 3912 states and 4513 transitions. [2020-11-07 05:22:37,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 05:22:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 4513 transitions. [2020-11-07 05:22:37,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-11-07 05:22:37,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:37,742 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] [2020-11-07 05:22:37,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 05:22:37,743 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:37,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:37,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1806203819, now seen corresponding path program 1 times [2020-11-07 05:22:37,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:37,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741251133] [2020-11-07 05:22:37,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:37,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:37,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:37,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:22:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:37,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-11-07 05:22:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:37,976 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 05:22:37,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741251133] [2020-11-07 05:22:37,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:37,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:22:37,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289010572] [2020-11-07 05:22:37,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:22:37,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:37,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:22:37,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:22:37,979 INFO L87 Difference]: Start difference. First operand 3912 states and 4513 transitions. Second operand 7 states. [2020-11-07 05:22:38,850 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:22:41,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:41,348 INFO L93 Difference]: Finished difference Result 8715 states and 10216 transitions. [2020-11-07 05:22:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 05:22:41,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-11-07 05:22:41,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:41,377 INFO L225 Difference]: With dead ends: 8715 [2020-11-07 05:22:41,378 INFO L226 Difference]: Without dead ends: 4976 [2020-11-07 05:22:41,389 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 05:22:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2020-11-07 05:22:42,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4883. [2020-11-07 05:22:42,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4883 states. [2020-11-07 05:22:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4883 states to 4883 states and 5701 transitions. [2020-11-07 05:22:42,218 INFO L78 Accepts]: Start accepts. Automaton has 4883 states and 5701 transitions. Word has length 217 [2020-11-07 05:22:42,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:42,218 INFO L481 AbstractCegarLoop]: Abstraction has 4883 states and 5701 transitions. [2020-11-07 05:22:42,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:22:42,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4883 states and 5701 transitions. [2020-11-07 05:22:42,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-11-07 05:22:42,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:42,232 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, 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 05:22:42,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 05:22:42,233 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:42,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:42,233 INFO L82 PathProgramCache]: Analyzing trace with hash -479619811, now seen corresponding path program 1 times [2020-11-07 05:22:42,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:42,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672824156] [2020-11-07 05:22:42,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:42,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:42,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:42,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:22:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:42,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-11-07 05:22:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 74 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-07 05:22:42,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672824156] [2020-11-07 05:22:42,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:42,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:22:42,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984294163] [2020-11-07 05:22:42,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:22:42,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:42,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:22:42,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:22:42,699 INFO L87 Difference]: Start difference. First operand 4883 states and 5701 transitions. Second operand 10 states. [2020-11-07 05:22:42,897 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:22:43,185 WARN L194 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-11-07 05:22:43,482 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:22:43,992 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:22:44,446 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:22:45,098 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:22:45,486 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:22:45,743 WARN L194 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-11-07 05:22:46,323 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:22:47,271 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:22:47,803 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:22:50,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:50,499 INFO L93 Difference]: Finished difference Result 11667 states and 13751 transitions. [2020-11-07 05:22:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-07 05:22:50,499 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 219 [2020-11-07 05:22:50,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:50,539 INFO L225 Difference]: With dead ends: 11667 [2020-11-07 05:22:50,539 INFO L226 Difference]: Without dead ends: 6957 [2020-11-07 05:22:50,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2020-11-07 05:22:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6957 states. [2020-11-07 05:22:51,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6957 to 6258. [2020-11-07 05:22:51,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6258 states. [2020-11-07 05:22:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6258 states to 6258 states and 7321 transitions. [2020-11-07 05:22:51,810 INFO L78 Accepts]: Start accepts. Automaton has 6258 states and 7321 transitions. Word has length 219 [2020-11-07 05:22:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:51,811 INFO L481 AbstractCegarLoop]: Abstraction has 6258 states and 7321 transitions. [2020-11-07 05:22:51,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:22:51,811 INFO L276 IsEmpty]: Start isEmpty. Operand 6258 states and 7321 transitions. [2020-11-07 05:22:51,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-11-07 05:22:51,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:51,827 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] [2020-11-07 05:22:51,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 05:22:51,828 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:51,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:51,828 INFO L82 PathProgramCache]: Analyzing trace with hash -196509747, now seen corresponding path program 1 times [2020-11-07 05:22:51,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:51,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430880320] [2020-11-07 05:22:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:51,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:52,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:52,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:22:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:52,299 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 05:22:52,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430880320] [2020-11-07 05:22:52,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:52,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:22:52,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098786643] [2020-11-07 05:22:52,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:22:52,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:52,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:22:52,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:22:52,303 INFO L87 Difference]: Start difference. First operand 6258 states and 7321 transitions. Second operand 8 states. [2020-11-07 05:22:52,496 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:22:53,051 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:22:54,268 WARN L194 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:22:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:22:57,310 INFO L93 Difference]: Finished difference Result 12740 states and 14953 transitions. [2020-11-07 05:22:57,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 05:22:57,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 229 [2020-11-07 05:22:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:22:57,344 INFO L225 Difference]: With dead ends: 12740 [2020-11-07 05:22:57,344 INFO L226 Difference]: Without dead ends: 6655 [2020-11-07 05:22:57,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:22:57,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6655 states. [2020-11-07 05:22:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6655 to 6268. [2020-11-07 05:22:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6268 states. [2020-11-07 05:22:58,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6268 states to 6268 states and 7307 transitions. [2020-11-07 05:22:58,553 INFO L78 Accepts]: Start accepts. Automaton has 6268 states and 7307 transitions. Word has length 229 [2020-11-07 05:22:58,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:22:58,553 INFO L481 AbstractCegarLoop]: Abstraction has 6268 states and 7307 transitions. [2020-11-07 05:22:58,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:22:58,553 INFO L276 IsEmpty]: Start isEmpty. Operand 6268 states and 7307 transitions. [2020-11-07 05:22:58,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-11-07 05:22:58,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:22:58,567 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] [2020-11-07 05:22:58,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 05:22:58,567 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:22:58,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:22:58,568 INFO L82 PathProgramCache]: Analyzing trace with hash -27568149, now seen corresponding path program 1 times [2020-11-07 05:22:58,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:22:58,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878219464] [2020-11-07 05:22:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:22:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:58,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:22:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:58,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:22:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:58,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:22:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:58,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 05:22:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:22:59,217 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 05:22:59,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878219464] [2020-11-07 05:22:59,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:22:59,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:22:59,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851176942] [2020-11-07 05:22:59,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:22:59,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:22:59,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:22:59,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:22:59,220 INFO L87 Difference]: Start difference. First operand 6268 states and 7307 transitions. Second operand 11 states. [2020-11-07 05:22:59,422 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:23:00,363 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:23:00,578 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:23:02,441 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:23:05,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:23:05,016 INFO L93 Difference]: Finished difference Result 13476 states and 15876 transitions. [2020-11-07 05:23:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 05:23:05,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-11-07 05:23:05,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:23:05,051 INFO L225 Difference]: With dead ends: 13476 [2020-11-07 05:23:05,051 INFO L226 Difference]: Without dead ends: 6778 [2020-11-07 05:23:05,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:23:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2020-11-07 05:23:06,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 6185. [2020-11-07 05:23:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6185 states. [2020-11-07 05:23:06,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6185 states to 6185 states and 7019 transitions. [2020-11-07 05:23:06,151 INFO L78 Accepts]: Start accepts. Automaton has 6185 states and 7019 transitions. Word has length 246 [2020-11-07 05:23:06,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:23:06,152 INFO L481 AbstractCegarLoop]: Abstraction has 6185 states and 7019 transitions. [2020-11-07 05:23:06,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:23:06,152 INFO L276 IsEmpty]: Start isEmpty. Operand 6185 states and 7019 transitions. [2020-11-07 05:23:06,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-11-07 05:23:06,161 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:23:06,161 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] [2020-11-07 05:23:06,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 05:23:06,162 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:23:06,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:23:06,163 INFO L82 PathProgramCache]: Analyzing trace with hash 913595762, now seen corresponding path program 1 times [2020-11-07 05:23:06,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:23:06,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325056129] [2020-11-07 05:23:06,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:23:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:23:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:06,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:23:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:06,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:23:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:06,962 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 05:23:06,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325056129] [2020-11-07 05:23:06,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:23:06,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 05:23:06,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350405727] [2020-11-07 05:23:06,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 05:23:06,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:23:06,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 05:23:06,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:23:06,964 INFO L87 Difference]: Start difference. First operand 6185 states and 7019 transitions. Second operand 11 states. [2020-11-07 05:23:07,187 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:23:08,198 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:23:09,105 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:23:09,227 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:23:09,820 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 05:23:10,321 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 05:23:10,703 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:23:14,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:23:14,555 INFO L93 Difference]: Finished difference Result 14193 states and 16058 transitions. [2020-11-07 05:23:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 05:23:14,558 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 249 [2020-11-07 05:23:14,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:23:14,596 INFO L225 Difference]: With dead ends: 14193 [2020-11-07 05:23:14,596 INFO L226 Difference]: Without dead ends: 7498 [2020-11-07 05:23:14,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:23:14,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7498 states. [2020-11-07 05:23:15,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7498 to 6347. [2020-11-07 05:23:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6347 states. [2020-11-07 05:23:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6347 states to 6347 states and 7105 transitions. [2020-11-07 05:23:15,836 INFO L78 Accepts]: Start accepts. Automaton has 6347 states and 7105 transitions. Word has length 249 [2020-11-07 05:23:15,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:23:15,836 INFO L481 AbstractCegarLoop]: Abstraction has 6347 states and 7105 transitions. [2020-11-07 05:23:15,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 05:23:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 6347 states and 7105 transitions. [2020-11-07 05:23:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-11-07 05:23:15,845 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:23:15,845 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 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] [2020-11-07 05:23:15,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 05:23:15,845 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:23:15,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:23:15,846 INFO L82 PathProgramCache]: Analyzing trace with hash 234186119, now seen corresponding path program 1 times [2020-11-07 05:23:15,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:23:15,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155448221] [2020-11-07 05:23:15,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:23:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:16,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:23:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:16,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:23:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:16,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 05:23:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:16,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-07 05:23:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-11-07 05:23:16,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155448221] [2020-11-07 05:23:16,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:23:16,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:23:16,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874768231] [2020-11-07 05:23:16,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:23:16,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:23:16,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:23:16,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:23:16,175 INFO L87 Difference]: Start difference. First operand 6347 states and 7105 transitions. Second operand 7 states. [2020-11-07 05:23:16,890 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:23:17,939 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:23:19,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:23:19,656 INFO L93 Difference]: Finished difference Result 12720 states and 14213 transitions. [2020-11-07 05:23:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:23:19,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-11-07 05:23:19,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:23:19,683 INFO L225 Difference]: With dead ends: 12720 [2020-11-07 05:23:19,684 INFO L226 Difference]: Without dead ends: 6292 [2020-11-07 05:23:19,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 05:23:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6292 states. [2020-11-07 05:23:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6292 to 6248. [2020-11-07 05:23:20,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6248 states. [2020-11-07 05:23:20,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 6681 transitions. [2020-11-07 05:23:20,718 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 6681 transitions. Word has length 265 [2020-11-07 05:23:20,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:23:20,718 INFO L481 AbstractCegarLoop]: Abstraction has 6248 states and 6681 transitions. [2020-11-07 05:23:20,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:23:20,718 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 6681 transitions. [2020-11-07 05:23:20,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-11-07 05:23:20,726 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:23:20,726 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:23:20,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 05:23:20,726 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:23:20,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:23:20,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2060463762, now seen corresponding path program 1 times [2020-11-07 05:23:20,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:23:20,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556120766] [2020-11-07 05:23:20,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:23:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:20,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:23:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:21,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:23:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:21,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 05:23:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:21,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 05:23:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 128 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-07 05:23:21,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556120766] [2020-11-07 05:23:21,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:23:21,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:23:21,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934381024] [2020-11-07 05:23:21,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:23:21,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:23:21,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:23:21,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:23:21,198 INFO L87 Difference]: Start difference. First operand 6248 states and 6681 transitions. Second operand 10 states. [2020-11-07 05:23:21,527 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:23:22,165 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:23:22,635 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:23:23,190 WARN L194 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-11-07 05:23:23,449 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:23:24,424 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:23:26,214 WARN L194 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:23:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:23:27,906 INFO L93 Difference]: Finished difference Result 12685 states and 13587 transitions. [2020-11-07 05:23:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-07 05:23:27,907 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 266 [2020-11-07 05:23:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:23:27,931 INFO L225 Difference]: With dead ends: 12685 [2020-11-07 05:23:27,931 INFO L226 Difference]: Without dead ends: 6610 [2020-11-07 05:23:27,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2020-11-07 05:23:27,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2020-11-07 05:23:29,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 6103. [2020-11-07 05:23:29,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6103 states. [2020-11-07 05:23:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 6490 transitions. [2020-11-07 05:23:29,131 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 6490 transitions. Word has length 266 [2020-11-07 05:23:29,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:23:29,132 INFO L481 AbstractCegarLoop]: Abstraction has 6103 states and 6490 transitions. [2020-11-07 05:23:29,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:23:29,132 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 6490 transitions. [2020-11-07 05:23:29,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-11-07 05:23:29,139 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:23:29,139 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-11-07 05:23:29,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 05:23:29,139 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:23:29,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:23:29,140 INFO L82 PathProgramCache]: Analyzing trace with hash 888262528, now seen corresponding path program 1 times [2020-11-07 05:23:29,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:23:29,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889764525] [2020-11-07 05:23:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:23:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:29,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:23:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:29,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:23:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:29,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:23:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:29,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 05:23:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:29,521 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 173 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-11-07 05:23:29,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889764525] [2020-11-07 05:23:29,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:23:29,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:23:29,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273877244] [2020-11-07 05:23:29,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:23:29,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:23:29,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:23:29,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:23:29,525 INFO L87 Difference]: Start difference. First operand 6103 states and 6490 transitions. Second operand 8 states. [2020-11-07 05:23:30,998 WARN L194 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:23:33,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:23:33,331 INFO L93 Difference]: Finished difference Result 12134 states and 12904 transitions. [2020-11-07 05:23:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:23:33,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 306 [2020-11-07 05:23:33,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:23:33,364 INFO L225 Difference]: With dead ends: 12134 [2020-11-07 05:23:33,364 INFO L226 Difference]: Without dead ends: 6204 [2020-11-07 05:23:33,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:23:33,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6204 states. [2020-11-07 05:23:34,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6204 to 5837. [2020-11-07 05:23:34,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5837 states. [2020-11-07 05:23:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5837 states to 5837 states and 6182 transitions. [2020-11-07 05:23:34,513 INFO L78 Accepts]: Start accepts. Automaton has 5837 states and 6182 transitions. Word has length 306 [2020-11-07 05:23:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:23:34,514 INFO L481 AbstractCegarLoop]: Abstraction has 5837 states and 6182 transitions. [2020-11-07 05:23:34,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:23:34,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5837 states and 6182 transitions. [2020-11-07 05:23:34,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-11-07 05:23:34,522 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:23:34,523 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 05:23:34,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 05:23:34,523 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:23:34,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:23:34,524 INFO L82 PathProgramCache]: Analyzing trace with hash -863851653, now seen corresponding path program 1 times [2020-11-07 05:23:34,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:23:34,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162624628] [2020-11-07 05:23:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:23:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:34,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:23:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:34,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:23:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:23:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 05:23:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:34,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-07 05:23:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 150 proven. 32 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-11-07 05:23:34,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162624628] [2020-11-07 05:23:34,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:23:34,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:23:34,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596643615] [2020-11-07 05:23:34,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:23:34,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:23:34,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:23:34,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:23:34,943 INFO L87 Difference]: Start difference. First operand 5837 states and 6182 transitions. Second operand 7 states. [2020-11-07 05:23:37,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:23:37,946 INFO L93 Difference]: Finished difference Result 11359 states and 12041 transitions. [2020-11-07 05:23:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 05:23:37,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-11-07 05:23:38,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:23:38,042 INFO L225 Difference]: With dead ends: 11359 [2020-11-07 05:23:38,042 INFO L226 Difference]: Without dead ends: 5695 [2020-11-07 05:23:38,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:23:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5695 states. [2020-11-07 05:23:39,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5695 to 5660. [2020-11-07 05:23:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5660 states. [2020-11-07 05:23:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5660 states to 5660 states and 5970 transitions. [2020-11-07 05:23:39,055 INFO L78 Accepts]: Start accepts. Automaton has 5660 states and 5970 transitions. Word has length 327 [2020-11-07 05:23:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:23:39,056 INFO L481 AbstractCegarLoop]: Abstraction has 5660 states and 5970 transitions. [2020-11-07 05:23:39,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:23:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 5660 states and 5970 transitions. [2020-11-07 05:23:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-11-07 05:23:39,066 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:23:39,066 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-11-07 05:23:39,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 05:23:39,066 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:23:39,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:23:39,067 INFO L82 PathProgramCache]: Analyzing trace with hash -9437547, now seen corresponding path program 1 times [2020-11-07 05:23:39,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:23:39,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484159110] [2020-11-07 05:23:39,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:23:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:39,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:23:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:39,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:23:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:39,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:23:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:39,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 05:23:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:39,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-07 05:23:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:39,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-11-07 05:23:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:39,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-11-07 05:23:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:23:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 393 proven. 4 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-11-07 05:23:39,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484159110] [2020-11-07 05:23:39,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:23:39,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:23:39,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036518431] [2020-11-07 05:23:39,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:23:39,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:23:39,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:23:39,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:23:39,560 INFO L87 Difference]: Start difference. First operand 5660 states and 5970 transitions. Second operand 7 states. [2020-11-07 05:23:43,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:23:43,245 INFO L93 Difference]: Finished difference Result 11141 states and 11797 transitions. [2020-11-07 05:23:43,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 05:23:43,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 401 [2020-11-07 05:23:43,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:23:43,251 INFO L225 Difference]: With dead ends: 11141 [2020-11-07 05:23:43,251 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 05:23:43,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 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 05:23:43,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 05:23:43,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 05:23:43,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 05:23:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 05:23:43,263 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 401 [2020-11-07 05:23:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:23:43,263 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 05:23:43,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:23:43,264 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 05:23:43,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 05:23:43,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 05:23:43,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 05:23:43,980 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:23:58,818 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 107 [2020-11-07 05:23:58,974 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 105 [2020-11-07 05:23:59,209 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 106 [2020-11-07 05:25:06,955 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 115 [2020-11-07 05:26:17,987 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 153 [2020-11-07 05:26:18,245 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 144 [2020-11-07 05:26:19,638 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 153 [2020-11-07 05:27:13,210 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 107 [2020-11-07 05:27:13,366 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 105 [2020-11-07 05:27:13,594 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 106 [2020-11-07 05:27:15,316 WARN L194 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 170 DAG size of output: 69 [2020-11-07 05:27:18,294 WARN L194 SmtUtils]: Spent 2.96 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:27:21,335 WARN L194 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:27:24,296 WARN L194 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:27:25,145 WARN L194 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:27:26,273 WARN L194 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 170 DAG size of output: 69 [2020-11-07 05:27:27,124 WARN L194 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:27:30,099 WARN L194 SmtUtils]: Spent 2.96 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:27:31,221 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 170 DAG size of output: 69 [2020-11-07 05:27:34,202 WARN L194 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:27:35,383 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 178 DAG size of output: 71 [2020-11-07 05:27:36,339 WARN L194 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 74 [2020-11-07 05:27:37,140 WARN L194 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 68 [2020-11-07 05:27:37,882 WARN L194 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 65 [2020-11-07 05:27:38,617 WARN L194 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 67 [2020-11-07 05:27:40,361 WARN L194 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 185 DAG size of output: 77 [2020-11-07 05:27:43,393 WARN L194 SmtUtils]: Spent 3.02 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:27:44,671 WARN L194 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 183 DAG size of output: 73 [2020-11-07 05:27:45,496 WARN L194 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 70 [2020-11-07 05:27:48,530 WARN L194 SmtUtils]: Spent 3.02 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:27:51,715 WARN L194 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:27:52,824 WARN L194 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 122 DAG size of output: 67 [2020-11-07 05:27:53,708 WARN L194 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 68 [2020-11-07 05:27:54,595 WARN L194 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 67 [2020-11-07 05:27:55,864 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 173 DAG size of output: 68 [2020-11-07 05:27:59,180 WARN L194 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:27:59,969 WARN L194 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 66 [2020-11-07 05:28:00,910 WARN L194 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:28:01,975 WARN L194 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 128 DAG size of output: 68 [2020-11-07 05:28:02,829 WARN L194 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 68 [2020-11-07 05:28:03,922 WARN L194 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 124 DAG size of output: 69 [2020-11-07 05:28:04,991 WARN L194 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 128 DAG size of output: 73 [2020-11-07 05:28:08,254 WARN L194 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:28:09,290 WARN L194 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 172 DAG size of output: 74 [2020-11-07 05:28:12,503 WARN L194 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:28:13,363 WARN L194 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 68 [2020-11-07 05:28:14,225 WARN L194 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 68 [2020-11-07 05:28:15,086 WARN L194 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 67 [2020-11-07 05:28:18,303 WARN L194 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:28:19,303 WARN L194 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 66 [2020-11-07 05:28:20,382 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 124 DAG size of output: 69 [2020-11-07 05:28:21,198 WARN L194 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 68 [2020-11-07 05:28:22,391 WARN L194 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 133 DAG size of output: 67 [2020-11-07 05:28:23,748 WARN L194 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 141 DAG size of output: 75 [2020-11-07 05:28:24,845 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 133 DAG size of output: 67 [2020-11-07 05:28:26,035 WARN L194 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 128 DAG size of output: 68 [2020-11-07 05:28:29,210 WARN L194 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:28:30,224 WARN L194 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 124 DAG size of output: 64 [2020-11-07 05:28:31,432 WARN L194 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 180 DAG size of output: 71 [2020-11-07 05:28:32,946 WARN L194 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 134 DAG size of output: 72 [2020-11-07 05:28:34,005 WARN L194 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 127 DAG size of output: 68 [2020-11-07 05:28:34,908 WARN L194 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 65 [2020-11-07 05:28:36,013 WARN L194 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 172 DAG size of output: 68 [2020-11-07 05:28:36,792 WARN L194 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 64 [2020-11-07 05:28:38,021 WARN L194 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 178 DAG size of output: 71 [2020-11-07 05:28:38,860 WARN L194 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2020-11-07 05:28:39,738 WARN L194 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 69 [2020-11-07 05:28:42,943 WARN L194 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:28:43,750 WARN L194 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 66 [2020-11-07 05:28:44,248 WARN L194 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 57 [2020-11-07 05:28:45,402 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 170 DAG size of output: 69 [2020-11-07 05:28:46,152 WARN L194 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 66 [2020-11-07 05:28:49,249 WARN L194 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:28:49,995 WARN L194 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 66 [2020-11-07 05:28:50,876 WARN L194 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:28:53,923 WARN L194 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:28:57,111 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:29:00,157 WARN L194 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:29:01,046 WARN L194 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:29:01,741 WARN L194 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 55 [2020-11-07 05:29:02,607 WARN L194 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:29:03,305 WARN L194 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 55 [2020-11-07 05:29:06,444 WARN L194 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:29:09,644 WARN L194 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:29:10,415 WARN L194 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 66 [2020-11-07 05:29:11,903 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 137 DAG size of output: 71 [2020-11-07 05:29:15,268 WARN L194 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:29:16,254 WARN L194 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 66 [2020-11-07 05:29:17,559 WARN L194 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 178 DAG size of output: 70 [2020-11-07 05:29:18,392 WARN L194 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 67 [2020-11-07 05:29:19,230 WARN L194 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 70 [2020-11-07 05:29:21,003 WARN L194 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 184 DAG size of output: 81 [2020-11-07 05:29:22,153 WARN L194 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 172 DAG size of output: 68 [2020-11-07 05:29:23,758 WARN L194 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 208 DAG size of output: 78 [2020-11-07 05:29:24,598 WARN L194 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 68 [2020-11-07 05:29:26,100 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 183 DAG size of output: 72 [2020-11-07 05:29:27,275 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 123 DAG size of output: 65 [2020-11-07 05:29:30,451 WARN L194 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:29:31,216 WARN L194 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 67 [2020-11-07 05:29:32,063 WARN L194 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 69 [2020-11-07 05:29:32,848 WARN L194 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 66 [2020-11-07 05:29:33,670 WARN L194 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 67 [2020-11-07 05:29:34,918 WARN L194 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 136 DAG size of output: 69 [2020-11-07 05:29:36,125 WARN L194 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 170 DAG size of output: 69 [2020-11-07 05:29:36,871 WARN L194 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 66 [2020-11-07 05:29:40,084 WARN L194 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:29:43,278 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:29:44,226 WARN L194 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:29:47,416 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:29:50,544 WARN L194 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:29:53,654 WARN L194 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:29:54,565 WARN L194 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:29:55,494 WARN L194 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 68 [2020-11-07 05:29:56,886 WARN L194 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 137 DAG size of output: 69 [2020-11-07 05:30:00,042 WARN L194 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:30:00,962 WARN L194 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 68 [2020-11-07 05:30:01,731 WARN L194 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 66 [2020-11-07 05:30:02,555 WARN L194 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 69 [2020-11-07 05:30:04,170 WARN L194 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 187 DAG size of output: 73 [2020-11-07 05:30:05,360 WARN L194 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 175 DAG size of output: 70 [2020-11-07 05:30:06,165 WARN L194 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 64 [2020-11-07 05:30:07,484 WARN L194 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 150 DAG size of output: 72 [2020-11-07 05:30:08,299 WARN L194 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 72 [2020-11-07 05:30:09,256 WARN L194 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2020-11-07 05:30:10,288 WARN L194 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 125 DAG size of output: 66 [2020-11-07 05:30:13,546 WARN L194 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:30:14,811 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 178 DAG size of output: 71 [2020-11-07 05:30:17,952 WARN L194 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:30:19,553 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 135 DAG size of output: 76 [2020-11-07 05:30:20,435 WARN L194 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:30:21,604 WARN L194 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 170 DAG size of output: 69 [2020-11-07 05:30:24,685 WARN L194 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:30:25,831 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 183 DAG size of output: 72 [2020-11-07 05:30:27,026 WARN L194 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 132 DAG size of output: 65 [2020-11-07 05:30:30,182 WARN L194 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:30:31,437 WARN L194 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 134 DAG size of output: 71 [2020-11-07 05:30:32,209 WARN L194 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 66 [2020-11-07 05:30:32,999 WARN L194 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 67 [2020-11-07 05:30:34,013 WARN L194 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 124 DAG size of output: 64 [2020-11-07 05:30:35,076 WARN L194 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 121 DAG size of output: 65 [2020-11-07 05:30:36,011 WARN L194 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 72 [2020-11-07 05:30:39,282 WARN L194 SmtUtils]: Spent 3.26 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:30:40,373 WARN L194 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 172 DAG size of output: 73 [2020-11-07 05:30:41,233 WARN L194 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 67 [2020-11-07 05:30:42,884 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 138 DAG size of output: 79 [2020-11-07 05:30:43,958 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 121 DAG size of output: 65 [2020-11-07 05:30:44,839 WARN L194 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2020-11-07 05:30:45,719 WARN L194 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 69 [2020-11-07 05:30:46,798 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 121 DAG size of output: 65 [2020-11-07 05:30:47,926 WARN L194 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 125 DAG size of output: 64 [2020-11-07 05:30:49,211 WARN L194 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 142 DAG size of output: 69 [2020-11-07 05:30:50,460 WARN L194 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 135 DAG size of output: 68 [2020-11-07 05:30:51,923 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 183 DAG size of output: 74 [2020-11-07 05:30:52,967 WARN L194 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 126 DAG size of output: 66 [2020-11-07 05:30:53,961 WARN L194 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 69 [2020-11-07 05:30:54,878 WARN L194 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 68 [2020-11-07 05:30:56,364 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 153 DAG size of output: 72 [2020-11-07 05:30:57,299 WARN L194 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 69 [2020-11-07 05:30:58,568 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 170 DAG size of output: 69 [2020-11-07 05:30:59,131 WARN L194 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 57 [2020-11-07 05:31:02,421 WARN L194 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:31:05,687 WARN L194 SmtUtils]: Spent 3.26 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:31:06,225 WARN L194 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 57 [2020-11-07 05:31:06,778 WARN L194 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 57 [2020-11-07 05:31:07,719 WARN L194 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:31:08,651 WARN L194 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 68 [2020-11-07 05:31:12,002 WARN L194 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:31:13,141 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 123 DAG size of output: 67 [2020-11-07 05:31:14,254 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 124 DAG size of output: 67 [2020-11-07 05:31:15,455 WARN L194 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 124 DAG size of output: 64 [2020-11-07 05:31:18,760 WARN L194 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:31:22,016 WARN L194 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:31:23,205 WARN L194 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 173 DAG size of output: 69 [2020-11-07 05:31:24,068 WARN L194 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 72 [2020-11-07 05:31:27,396 WARN L194 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:31:28,342 WARN L194 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:31:29,267 WARN L194 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:31:30,202 WARN L194 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:31:33,413 WARN L194 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:31:34,629 WARN L194 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 170 DAG size of output: 69 [2020-11-07 05:31:35,575 WARN L194 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:31:38,855 WARN L194 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:31:39,796 WARN L194 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:31:43,007 WARN L194 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:31:43,955 WARN L194 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:31:45,071 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 120 DAG size of output: 65 [2020-11-07 05:31:46,204 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 123 DAG size of output: 67 [2020-11-07 05:31:47,023 WARN L194 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 64 [2020-11-07 05:31:50,285 WARN L194 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:31:51,463 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 173 DAG size of output: 69 [2020-11-07 05:31:54,788 WARN L194 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:31:55,868 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 124 DAG size of output: 66 [2020-11-07 05:31:57,080 WARN L194 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 128 DAG size of output: 68 [2020-11-07 05:31:58,029 WARN L194 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:32:01,379 WARN L194 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:32:04,708 WARN L194 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:32:05,542 WARN L194 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 69 [2020-11-07 05:32:06,444 WARN L194 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 65 [2020-11-07 05:32:09,734 WARN L194 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:32:10,956 WARN L194 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 170 DAG size of output: 69 [2020-11-07 05:32:11,568 WARN L194 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 57 [2020-11-07 05:32:12,846 WARN L194 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 126 DAG size of output: 66 [2020-11-07 05:32:13,705 WARN L194 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 68 [2020-11-07 05:32:14,914 WARN L194 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 127 DAG size of output: 70 [2020-11-07 05:32:15,923 WARN L194 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 130 DAG size of output: 70 [2020-11-07 05:32:19,236 WARN L194 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:32:22,555 WARN L194 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:32:23,552 WARN L194 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 72 [2020-11-07 05:32:24,557 WARN L194 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 71 [2020-11-07 05:32:25,406 WARN L194 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 69 [2020-11-07 05:32:26,549 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 121 DAG size of output: 65 [2020-11-07 05:32:27,664 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 120 DAG size of output: 65 [2020-11-07 05:32:28,492 WARN L194 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 66 [2020-11-07 05:32:29,709 WARN L194 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 173 DAG size of output: 69 [2020-11-07 05:32:30,614 WARN L194 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 65 [2020-11-07 05:32:31,527 WARN L194 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 65 [2020-11-07 05:32:32,470 WARN L194 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 72 [2020-11-07 05:32:33,596 WARN L194 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 120 DAG size of output: 65 [2020-11-07 05:32:34,673 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 129 DAG size of output: 74 [2020-11-07 05:32:38,012 WARN L194 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:32:38,967 WARN L194 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 69 [2020-11-07 05:32:40,340 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 138 DAG size of output: 69 [2020-11-07 05:32:41,441 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 125 DAG size of output: 66 [2020-11-07 05:32:42,743 WARN L194 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 135 DAG size of output: 67 [2020-11-07 05:32:46,106 WARN L194 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:32:47,171 WARN L194 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 126 DAG size of output: 73 [2020-11-07 05:32:50,540 WARN L194 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:32:51,804 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 135 DAG size of output: 68 [2020-11-07 05:32:52,876 WARN L194 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 126 DAG size of output: 66 [2020-11-07 05:32:54,172 WARN L194 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2020-11-07 05:32:57,513 WARN L194 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:32:58,766 WARN L194 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 126 DAG size of output: 64 [2020-11-07 05:33:00,721 WARN L194 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 195 DAG size of output: 73 [2020-11-07 05:33:01,857 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 122 DAG size of output: 67 [2020-11-07 05:33:02,807 WARN L194 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 70 [2020-11-07 05:33:04,347 WARN L194 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 180 DAG size of output: 70 [2020-11-07 05:33:05,212 WARN L194 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2020-11-07 05:33:08,546 WARN L194 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:33:09,378 WARN L194 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 67 [2020-11-07 05:33:12,755 WARN L194 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:33:13,853 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 128 DAG size of output: 73 [2020-11-07 05:33:15,081 WARN L194 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 127 DAG size of output: 68 [2020-11-07 05:33:16,221 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 122 DAG size of output: 67 [2020-11-07 05:33:17,791 WARN L194 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 183 DAG size of output: 72 [2020-11-07 05:33:21,147 WARN L194 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:33:22,411 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 170 DAG size of output: 69 [2020-11-07 05:33:23,683 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 170 DAG size of output: 69 [2020-11-07 05:33:24,649 WARN L194 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 68 [2020-11-07 05:33:27,931 WARN L194 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:33:29,179 WARN L194 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 170 DAG size of output: 69 [2020-11-07 05:33:32,464 WARN L194 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 228 DAG size of output: 83 [2020-11-07 05:33:35,845 WARN L194 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:33:36,680 WARN L194 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 67 [2020-11-07 05:33:40,022 WARN L194 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:33:41,124 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 122 DAG size of output: 65 [2020-11-07 05:33:42,270 WARN L194 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 123 DAG size of output: 67 [2020-11-07 05:33:45,614 WARN L194 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:33:47,767 WARN L194 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 187 DAG size of output: 75 [2020-11-07 05:33:48,902 WARN L194 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 122 DAG size of output: 67 [2020-11-07 05:33:49,796 WARN L194 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 68 [2020-11-07 05:33:53,177 WARN L194 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:33:54,087 WARN L194 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 66 [2020-11-07 05:33:57,420 WARN L194 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:33:58,696 WARN L194 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 170 DAG size of output: 69 [2020-11-07 05:34:02,047 WARN L194 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:34:05,421 WARN L194 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:34:06,333 WARN L194 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 65 [2020-11-07 05:34:07,349 WARN L194 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 124 DAG size of output: 70 [2020-11-07 05:34:08,306 WARN L194 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 66 [2020-11-07 05:34:11,705 WARN L194 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:34:12,685 WARN L194 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 68 [2020-11-07 05:34:16,093 WARN L194 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:34:17,008 WARN L194 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 68 [2020-11-07 05:34:18,268 WARN L194 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 171 DAG size of output: 69 [2020-11-07 05:34:21,525 WARN L194 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:34:22,711 WARN L194 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 173 DAG size of output: 69 [2020-11-07 05:34:23,633 WARN L194 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 69 [2020-11-07 05:34:25,447 WARN L194 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 184 DAG size of output: 81 [2020-11-07 05:34:26,675 WARN L194 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 129 DAG size of output: 71 [2020-11-07 05:34:29,916 WARN L194 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:34:33,145 WARN L194 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:34:33,966 WARN L194 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 69 [2020-11-07 05:34:34,853 WARN L194 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 68 [2020-11-07 05:34:38,082 WARN L194 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:34:41,302 WARN L194 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2020-11-07 05:34:42,864 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 177 DAG size of output: 70 [2020-11-07 05:34:44,415 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 198 DAG size of output: 70 [2020-11-07 05:34:47,658 WARN L194 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 229 DAG size of output: 82