/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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:23:01,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:23:01,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:23:01,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 01:23:01,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:23:01,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:23:01,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:23:01,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 01:23:01,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:23:01,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:23:01,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:23:01,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:23:01,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:23:01,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:23:01,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:23:01,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:23:01,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:23:01,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:23:01,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:23:01,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:23:01,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:23:01,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:23:01,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:23:01,507 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:23:01,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:23:01,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:23:01,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:23:01,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:23:01,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:23:01,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:23:01,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:23:01,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:23:01,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:23:01,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:23:01,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:23:01,969 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:23:01,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-10-24 01:23:02,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e590f7c3/5a30f26826424a00883e05ad83aea6e8/FLAG710207a56 [2020-10-24 01:23:02,880 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:23:02,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-10-24 01:23:02,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e590f7c3/5a30f26826424a00883e05ad83aea6e8/FLAG710207a56 [2020-10-24 01:23:03,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e590f7c3/5a30f26826424a00883e05ad83aea6e8 [2020-10-24 01:23:03,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:23:03,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:23:03,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:23:03,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:23:03,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:23:03,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:03" (1/1) ... [2020-10-24 01:23:03,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff2b8c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03, skipping insertion in model container [2020-10-24 01:23:03,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:03" (1/1) ... [2020-10-24 01:23:03,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:23:03,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:23:03,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:23:03,617 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:23:03,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:23:03,840 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:23:03,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03 WrapperNode [2020-10-24 01:23:03,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:23:03,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:23:03,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:23:03,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:23:03,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2020-10-24 01:23:03,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2020-10-24 01:23:03,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2020-10-24 01:23:03,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2020-10-24 01:23:03,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2020-10-24 01:23:03,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2020-10-24 01:23:03,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (1/1) ... [2020-10-24 01:23:03,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:23:03,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:23:04,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:23:04,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:23:04,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (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 [2020-10-24 01:23:04,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:23:04,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:23:04,092 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:23:04,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-24 01:23:04,092 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:23:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-24 01:23:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:23:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:23:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:23:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:23:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:23:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 01:23:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:23:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:23:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:23:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:23:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:23:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:23:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:23:06,072 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:23:06,073 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 01:23:06,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:06 BoogieIcfgContainer [2020-10-24 01:23:06,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:23:06,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:23:06,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:23:06,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:23:06,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:23:03" (1/3) ... [2020-10-24 01:23:06,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7637f9ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:06, skipping insertion in model container [2020-10-24 01:23:06,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03" (2/3) ... [2020-10-24 01:23:06,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7637f9ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:06, skipping insertion in model container [2020-10-24 01:23:06,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:06" (3/3) ... [2020-10-24 01:23:06,089 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2020-10-24 01:23:06,115 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:23:06,122 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:23:06,137 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:23:06,176 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:23:06,176 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:23:06,177 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:23:06,177 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:23:06,177 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:23:06,177 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:23:06,177 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:23:06,178 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:23:06,206 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2020-10-24 01:23:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-24 01:23:06,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:06,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:06,235 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:06,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:06,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1349729474, now seen corresponding path program 1 times [2020-10-24 01:23:06,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:06,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431894858] [2020-10-24 01:23:06,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:06,902 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-24 01:23:06,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:23:07,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431894858] [2020-10-24 01:23:07,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:23:07,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 01:23:07,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207363770] [2020-10-24 01:23:07,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 01:23:07,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:07,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 01:23:07,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 01:23:07,093 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 4 states. [2020-10-24 01:23:07,437 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:23:10,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:10,177 INFO L93 Difference]: Finished difference Result 1248 states and 1647 transitions. [2020-10-24 01:23:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 01:23:10,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-24 01:23:10,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:10,202 INFO L225 Difference]: With dead ends: 1248 [2020-10-24 01:23:10,203 INFO L226 Difference]: Without dead ends: 670 [2020-10-24 01:23:10,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 01:23:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-10-24 01:23:10,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 614. [2020-10-24 01:23:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2020-10-24 01:23:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 724 transitions. [2020-10-24 01:23:10,443 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 724 transitions. Word has length 151 [2020-10-24 01:23:10,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:10,445 INFO L481 AbstractCegarLoop]: Abstraction has 614 states and 724 transitions. [2020-10-24 01:23:10,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 01:23:10,445 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 724 transitions. [2020-10-24 01:23:10,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-24 01:23:10,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:10,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:10,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:23:10,453 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:10,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:10,454 INFO L82 PathProgramCache]: Analyzing trace with hash 2117276078, now seen corresponding path program 1 times [2020-10-24 01:23:10,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:10,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869254497] [2020-10-24 01:23:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:10,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:23:10,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869254497] [2020-10-24 01:23:10,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:10,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-24 01:23:10,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384786564] [2020-10-24 01:23:10,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 01:23:10,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:10,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 01:23:10,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 01:23:10,973 INFO L87 Difference]: Start difference. First operand 614 states and 724 transitions. Second operand 5 states. [2020-10-24 01:23:11,206 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:23:13,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:13,551 INFO L93 Difference]: Finished difference Result 1534 states and 1885 transitions. [2020-10-24 01:23:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 01:23:13,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-24 01:23:13,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:13,573 INFO L225 Difference]: With dead ends: 1534 [2020-10-24 01:23:13,574 INFO L226 Difference]: Without dead ends: 952 [2020-10-24 01:23:13,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 01:23:13,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-10-24 01:23:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 900. [2020-10-24 01:23:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2020-10-24 01:23:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1081 transitions. [2020-10-24 01:23:13,790 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1081 transitions. Word has length 168 [2020-10-24 01:23:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:13,792 INFO L481 AbstractCegarLoop]: Abstraction has 900 states and 1081 transitions. [2020-10-24 01:23:13,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 01:23:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1081 transitions. [2020-10-24 01:23:13,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-24 01:23:13,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:13,812 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:13,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:23:13,812 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:13,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:13,813 INFO L82 PathProgramCache]: Analyzing trace with hash 63829093, now seen corresponding path program 1 times [2020-10-24 01:23:13,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:13,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454865572] [2020-10-24 01:23:13,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:14,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:23:14,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454865572] [2020-10-24 01:23:14,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:23:14,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 01:23:14,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985147857] [2020-10-24 01:23:14,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:23:14,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:14,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:23:14,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:23:14,248 INFO L87 Difference]: Start difference. First operand 900 states and 1081 transitions. Second operand 8 states. [2020-10-24 01:23:14,502 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:23:18,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:18,323 INFO L93 Difference]: Finished difference Result 2854 states and 3677 transitions. [2020-10-24 01:23:18,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-24 01:23:18,324 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 173 [2020-10-24 01:23:18,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:18,342 INFO L225 Difference]: With dead ends: 2854 [2020-10-24 01:23:18,342 INFO L226 Difference]: Without dead ends: 1986 [2020-10-24 01:23:18,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-24 01:23:18,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2020-10-24 01:23:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1631. [2020-10-24 01:23:18,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1631 states. [2020-10-24 01:23:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2022 transitions. [2020-10-24 01:23:18,754 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2022 transitions. Word has length 173 [2020-10-24 01:23:18,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:18,754 INFO L481 AbstractCegarLoop]: Abstraction has 1631 states and 2022 transitions. [2020-10-24 01:23:18,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:23:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2022 transitions. [2020-10-24 01:23:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-24 01:23:18,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:18,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-24 01:23:18,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 01:23:18,766 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:18,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:18,767 INFO L82 PathProgramCache]: Analyzing trace with hash 464120051, now seen corresponding path program 1 times [2020-10-24 01:23:18,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:18,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532087018] [2020-10-24 01:23:18,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:18,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:18,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:18,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 01:23:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-24 01:23:19,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532087018] [2020-10-24 01:23:19,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:19,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:23:19,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507731406] [2020-10-24 01:23:19,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:23:19,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:19,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:23:19,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:23:19,055 INFO L87 Difference]: Start difference. First operand 1631 states and 2022 transitions. Second operand 7 states. [2020-10-24 01:23:21,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:21,913 INFO L93 Difference]: Finished difference Result 3640 states and 4650 transitions. [2020-10-24 01:23:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:23:21,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-24 01:23:21,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:21,936 INFO L225 Difference]: With dead ends: 3640 [2020-10-24 01:23:21,937 INFO L226 Difference]: Without dead ends: 2041 [2020-10-24 01:23:21,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:23:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2020-10-24 01:23:22,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 1670. [2020-10-24 01:23:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1670 states. [2020-10-24 01:23:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2050 transitions. [2020-10-24 01:23:22,372 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2050 transitions. Word has length 213 [2020-10-24 01:23:22,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:22,372 INFO L481 AbstractCegarLoop]: Abstraction has 1670 states and 2050 transitions. [2020-10-24 01:23:22,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:23:22,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2050 transitions. [2020-10-24 01:23:22,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-24 01:23:22,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:22,383 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, 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] [2020-10-24 01:23:22,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 01:23:22,383 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:22,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:22,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1910149684, now seen corresponding path program 1 times [2020-10-24 01:23:22,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:22,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604620184] [2020-10-24 01:23:22,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:22,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:22,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:22,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:23:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-24 01:23:22,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604620184] [2020-10-24 01:23:22,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:22,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:23:22,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522812540] [2020-10-24 01:23:22,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:23:22,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:22,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:23:22,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:23:22,709 INFO L87 Difference]: Start difference. First operand 1670 states and 2050 transitions. Second operand 7 states. [2020-10-24 01:23:25,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:25,867 INFO L93 Difference]: Finished difference Result 4244 states and 5380 transitions. [2020-10-24 01:23:25,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:23:25,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-10-24 01:23:25,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:25,890 INFO L225 Difference]: With dead ends: 4244 [2020-10-24 01:23:25,890 INFO L226 Difference]: Without dead ends: 2606 [2020-10-24 01:23:25,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:23:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2020-10-24 01:23:26,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2337. [2020-10-24 01:23:26,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2337 states. [2020-10-24 01:23:26,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 2869 transitions. [2020-10-24 01:23:26,450 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 2869 transitions. Word has length 235 [2020-10-24 01:23:26,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:26,450 INFO L481 AbstractCegarLoop]: Abstraction has 2337 states and 2869 transitions. [2020-10-24 01:23:26,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:23:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 2869 transitions. [2020-10-24 01:23:26,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-24 01:23:26,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:26,463 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:26,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 01:23:26,464 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:26,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:26,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1841168927, now seen corresponding path program 1 times [2020-10-24 01:23:26,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:26,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554575973] [2020-10-24 01:23:26,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:26,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:26,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 01:23:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:26,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-24 01:23:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 96 proven. 14 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-24 01:23:26,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554575973] [2020-10-24 01:23:26,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:26,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:23:26,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662769840] [2020-10-24 01:23:26,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:23:26,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:26,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:23:26,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:23:26,798 INFO L87 Difference]: Start difference. First operand 2337 states and 2869 transitions. Second operand 8 states. [2020-10-24 01:23:27,186 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:23:27,526 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-24 01:23:28,493 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:23:31,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:31,406 INFO L93 Difference]: Finished difference Result 5923 states and 7366 transitions. [2020-10-24 01:23:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-24 01:23:31,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 256 [2020-10-24 01:23:31,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:31,432 INFO L225 Difference]: With dead ends: 5923 [2020-10-24 01:23:31,432 INFO L226 Difference]: Without dead ends: 3187 [2020-10-24 01:23:31,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-24 01:23:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2020-10-24 01:23:32,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 3179. [2020-10-24 01:23:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-10-24 01:23:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 3728 transitions. [2020-10-24 01:23:32,066 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 3728 transitions. Word has length 256 [2020-10-24 01:23:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:32,067 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 3728 transitions. [2020-10-24 01:23:32,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:23:32,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 3728 transitions. [2020-10-24 01:23:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-24 01:23:32,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:32,082 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:32,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 01:23:32,082 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:32,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:32,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1944479063, now seen corresponding path program 1 times [2020-10-24 01:23:32,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:32,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137995934] [2020-10-24 01:23:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:32,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 01:23:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 93 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-24 01:23:32,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137995934] [2020-10-24 01:23:32,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:32,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:23:32,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888555543] [2020-10-24 01:23:32,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:23:32,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:32,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:23:32,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:23:32,518 INFO L87 Difference]: Start difference. First operand 3179 states and 3728 transitions. Second operand 8 states. [2020-10-24 01:23:33,281 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:23:33,918 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:23:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:36,683 INFO L93 Difference]: Finished difference Result 6392 states and 7524 transitions. [2020-10-24 01:23:36,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:23:36,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 261 [2020-10-24 01:23:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:36,707 INFO L225 Difference]: With dead ends: 6392 [2020-10-24 01:23:36,708 INFO L226 Difference]: Without dead ends: 3386 [2020-10-24 01:23:36,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:23:36,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2020-10-24 01:23:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2343. [2020-10-24 01:23:37,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2343 states. [2020-10-24 01:23:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 2701 transitions. [2020-10-24 01:23:37,335 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 2701 transitions. Word has length 261 [2020-10-24 01:23:37,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:37,335 INFO L481 AbstractCegarLoop]: Abstraction has 2343 states and 2701 transitions. [2020-10-24 01:23:37,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:23:37,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 2701 transitions. [2020-10-24 01:23:37,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-24 01:23:37,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:37,347 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2020-10-24 01:23:37,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 01:23:37,348 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:37,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:37,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1882413799, now seen corresponding path program 1 times [2020-10-24 01:23:37,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:37,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492958211] [2020-10-24 01:23:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:37,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:37,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:37,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:23:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:37,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 01:23:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 123 proven. 32 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-24 01:23:37,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492958211] [2020-10-24 01:23:37,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:37,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:23:37,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454875566] [2020-10-24 01:23:37,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:23:37,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:37,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:23:37,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:23:37,751 INFO L87 Difference]: Start difference. First operand 2343 states and 2701 transitions. Second operand 8 states. [2020-10-24 01:23:38,503 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:23:39,118 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:23:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:41,363 INFO L93 Difference]: Finished difference Result 4733 states and 5476 transitions. [2020-10-24 01:23:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 01:23:41,367 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 278 [2020-10-24 01:23:41,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:41,380 INFO L225 Difference]: With dead ends: 4733 [2020-10-24 01:23:41,380 INFO L226 Difference]: Without dead ends: 2563 [2020-10-24 01:23:41,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-24 01:23:41,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2020-10-24 01:23:42,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2493. [2020-10-24 01:23:42,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2493 states. [2020-10-24 01:23:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 2857 transitions. [2020-10-24 01:23:42,056 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 2857 transitions. Word has length 278 [2020-10-24 01:23:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:42,057 INFO L481 AbstractCegarLoop]: Abstraction has 2493 states and 2857 transitions. [2020-10-24 01:23:42,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:23:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 2857 transitions. [2020-10-24 01:23:42,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-24 01:23:42,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:42,069 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, 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] [2020-10-24 01:23:42,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 01:23:42,070 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:42,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:42,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1667464267, now seen corresponding path program 1 times [2020-10-24 01:23:42,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:42,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743244609] [2020-10-24 01:23:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:42,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:42,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:42,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-24 01:23:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:42,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-24 01:23:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 123 proven. 21 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-24 01:23:42,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743244609] [2020-10-24 01:23:42,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:42,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 01:23:42,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694050998] [2020-10-24 01:23:42,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 01:23:42,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:42,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 01:23:42,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:23:42,464 INFO L87 Difference]: Start difference. First operand 2493 states and 2857 transitions. Second operand 11 states. [2020-10-24 01:23:42,913 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-10-24 01:23:43,642 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:23:43,948 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:23:45,640 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-24 01:23:45,983 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:23:47,019 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:23:48,339 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:23:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:49,479 INFO L93 Difference]: Finished difference Result 6741 states and 7728 transitions. [2020-10-24 01:23:49,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-24 01:23:49,481 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 285 [2020-10-24 01:23:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:49,516 INFO L225 Difference]: With dead ends: 6741 [2020-10-24 01:23:49,517 INFO L226 Difference]: Without dead ends: 4421 [2020-10-24 01:23:49,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2020-10-24 01:23:49,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2020-10-24 01:23:50,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4336. [2020-10-24 01:23:50,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4336 states. [2020-10-24 01:23:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 4887 transitions. [2020-10-24 01:23:50,519 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 4887 transitions. Word has length 285 [2020-10-24 01:23:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:50,519 INFO L481 AbstractCegarLoop]: Abstraction has 4336 states and 4887 transitions. [2020-10-24 01:23:50,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 01:23:50,520 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 4887 transitions. [2020-10-24 01:23:50,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-24 01:23:50,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:50,532 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-24 01:23:50,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 01:23:50,532 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:50,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:50,533 INFO L82 PathProgramCache]: Analyzing trace with hash -673436740, now seen corresponding path program 1 times [2020-10-24 01:23:50,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:50,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084660400] [2020-10-24 01:23:50,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:50,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:50,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:50,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:23:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:51,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 01:23:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 124 proven. 33 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-24 01:23:51,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084660400] [2020-10-24 01:23:51,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:51,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-24 01:23:51,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558015886] [2020-10-24 01:23:51,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 01:23:51,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:51,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 01:23:51,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-24 01:23:51,339 INFO L87 Difference]: Start difference. First operand 4336 states and 4887 transitions. Second operand 15 states. [2020-10-24 01:23:51,709 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-10-24 01:23:52,212 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2020-10-24 01:23:53,369 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-24 01:23:54,356 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-24 01:23:55,010 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:23:55,764 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-24 01:23:56,246 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 100 [2020-10-24 01:23:57,201 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-24 01:23:58,058 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-24 01:23:58,382 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-10-24 01:23:59,379 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-24 01:23:59,782 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-10-24 01:24:01,116 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-24 01:24:02,730 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-24 01:24:04,047 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-24 01:24:04,492 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-10-24 01:24:07,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:07,219 INFO L93 Difference]: Finished difference Result 11315 states and 13049 transitions. [2020-10-24 01:24:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-24 01:24:07,219 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 293 [2020-10-24 01:24:07,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:07,254 INFO L225 Difference]: With dead ends: 11315 [2020-10-24 01:24:07,254 INFO L226 Difference]: Without dead ends: 6677 [2020-10-24 01:24:07,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=830, Invalid=2476, Unknown=0, NotChecked=0, Total=3306 [2020-10-24 01:24:07,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6677 states. [2020-10-24 01:24:08,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6677 to 6601. [2020-10-24 01:24:08,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6601 states. [2020-10-24 01:24:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6601 states to 6601 states and 7328 transitions. [2020-10-24 01:24:08,800 INFO L78 Accepts]: Start accepts. Automaton has 6601 states and 7328 transitions. Word has length 293 [2020-10-24 01:24:08,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:08,800 INFO L481 AbstractCegarLoop]: Abstraction has 6601 states and 7328 transitions. [2020-10-24 01:24:08,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 01:24:08,801 INFO L276 IsEmpty]: Start isEmpty. Operand 6601 states and 7328 transitions. [2020-10-24 01:24:08,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-24 01:24:08,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:08,818 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:08,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 01:24:08,818 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:08,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1320741800, now seen corresponding path program 1 times [2020-10-24 01:24:08,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:08,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994688382] [2020-10-24 01:24:08,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:09,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:09,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:09,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-24 01:24:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:09,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 01:24:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:09,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 01:24:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 192 proven. 28 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-24 01:24:09,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994688382] [2020-10-24 01:24:09,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:09,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:24:09,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463869924] [2020-10-24 01:24:09,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:24:09,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:09,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:24:09,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:24:09,319 INFO L87 Difference]: Start difference. First operand 6601 states and 7328 transitions. Second operand 10 states. [2020-10-24 01:24:09,550 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:24:10,439 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:24:10,975 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-10-24 01:24:11,239 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:24:11,393 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:24:12,705 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:24:14,388 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:24:14,725 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:24:17,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:17,675 INFO L93 Difference]: Finished difference Result 15062 states and 16802 transitions. [2020-10-24 01:24:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-24 01:24:17,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 328 [2020-10-24 01:24:17,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:17,714 INFO L225 Difference]: With dead ends: 15062 [2020-10-24 01:24:17,714 INFO L226 Difference]: Without dead ends: 8294 [2020-10-24 01:24:17,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2020-10-24 01:24:17,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8294 states. [2020-10-24 01:24:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8294 to 8069. [2020-10-24 01:24:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8069 states. [2020-10-24 01:24:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8069 states to 8069 states and 8733 transitions. [2020-10-24 01:24:19,714 INFO L78 Accepts]: Start accepts. Automaton has 8069 states and 8733 transitions. Word has length 328 [2020-10-24 01:24:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:19,715 INFO L481 AbstractCegarLoop]: Abstraction has 8069 states and 8733 transitions. [2020-10-24 01:24:19,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:24:19,715 INFO L276 IsEmpty]: Start isEmpty. Operand 8069 states and 8733 transitions. [2020-10-24 01:24:19,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-24 01:24:19,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:19,733 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:19,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 01:24:19,734 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:19,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:19,734 INFO L82 PathProgramCache]: Analyzing trace with hash -809664696, now seen corresponding path program 1 times [2020-10-24 01:24:19,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:19,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887661857] [2020-10-24 01:24:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:19,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:19,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:19,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-24 01:24:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:20,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 01:24:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:20,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-24 01:24:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 224 proven. 60 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-24 01:24:20,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887661857] [2020-10-24 01:24:20,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:20,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:24:20,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139235766] [2020-10-24 01:24:20,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:24:20,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:20,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:24:20,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:24:20,172 INFO L87 Difference]: Start difference. First operand 8069 states and 8733 transitions. Second operand 7 states. [2020-10-24 01:24:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:24,263 INFO L93 Difference]: Finished difference Result 16090 states and 17405 transitions. [2020-10-24 01:24:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 01:24:24,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 348 [2020-10-24 01:24:24,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:24,305 INFO L225 Difference]: With dead ends: 16090 [2020-10-24 01:24:24,305 INFO L226 Difference]: Without dead ends: 8199 [2020-10-24 01:24:24,328 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 [2020-10-24 01:24:24,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8199 states. [2020-10-24 01:24:26,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8199 to 8128. [2020-10-24 01:24:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8128 states. [2020-10-24 01:24:26,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 8688 transitions. [2020-10-24 01:24:26,461 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 8688 transitions. Word has length 348 [2020-10-24 01:24:26,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:26,461 INFO L481 AbstractCegarLoop]: Abstraction has 8128 states and 8688 transitions. [2020-10-24 01:24:26,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:24:26,461 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 8688 transitions. [2020-10-24 01:24:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-24 01:24:26,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:26,478 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:26,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 01:24:26,478 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:26,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:26,479 INFO L82 PathProgramCache]: Analyzing trace with hash -885481970, now seen corresponding path program 1 times [2020-10-24 01:24:26,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:26,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860278690] [2020-10-24 01:24:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:26,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:26,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:24:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:26,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 01:24:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:26,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-24 01:24:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:26,930 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 243 proven. 18 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-24 01:24:26,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860278690] [2020-10-24 01:24:26,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:26,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:24:26,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361936642] [2020-10-24 01:24:26,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:24:26,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:26,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:24:26,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:24:26,932 INFO L87 Difference]: Start difference. First operand 8128 states and 8688 transitions. Second operand 8 states. [2020-10-24 01:24:28,398 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:24:31,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:31,565 INFO L93 Difference]: Finished difference Result 16285 states and 17409 transitions. [2020-10-24 01:24:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:24:31,565 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 370 [2020-10-24 01:24:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:31,599 INFO L225 Difference]: With dead ends: 16285 [2020-10-24 01:24:31,600 INFO L226 Difference]: Without dead ends: 8335 [2020-10-24 01:24:31,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-24 01:24:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8335 states. [2020-10-24 01:24:34,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8335 to 8279. [2020-10-24 01:24:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8279 states. [2020-10-24 01:24:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8279 states to 8279 states and 8820 transitions. [2020-10-24 01:24:34,016 INFO L78 Accepts]: Start accepts. Automaton has 8279 states and 8820 transitions. Word has length 370 [2020-10-24 01:24:34,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:34,016 INFO L481 AbstractCegarLoop]: Abstraction has 8279 states and 8820 transitions. [2020-10-24 01:24:34,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:24:34,017 INFO L276 IsEmpty]: Start isEmpty. Operand 8279 states and 8820 transitions. [2020-10-24 01:24:34,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-24 01:24:34,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:34,032 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:34,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 01:24:34,032 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:34,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:34,033 INFO L82 PathProgramCache]: Analyzing trace with hash -382983671, now seen corresponding path program 1 times [2020-10-24 01:24:34,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:34,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872653840] [2020-10-24 01:24:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:24:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 01:24:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-24 01:24:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-24 01:24:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 228 proven. 42 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2020-10-24 01:24:34,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872653840] [2020-10-24 01:24:34,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:34,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:24:34,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124675756] [2020-10-24 01:24:34,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:24:34,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:34,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:24:34,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:24:34,547 INFO L87 Difference]: Start difference. First operand 8279 states and 8820 transitions. Second operand 7 states. [2020-10-24 01:24:38,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:38,609 INFO L93 Difference]: Finished difference Result 15286 states and 16275 transitions. [2020-10-24 01:24:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 01:24:38,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 391 [2020-10-24 01:24:38,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:38,635 INFO L225 Difference]: With dead ends: 15286 [2020-10-24 01:24:38,635 INFO L226 Difference]: Without dead ends: 8275 [2020-10-24 01:24:38,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:24:38,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8275 states. [2020-10-24 01:24:40,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8275 to 8268. [2020-10-24 01:24:40,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8268 states. [2020-10-24 01:24:40,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8268 states to 8268 states and 8786 transitions. [2020-10-24 01:24:40,806 INFO L78 Accepts]: Start accepts. Automaton has 8268 states and 8786 transitions. Word has length 391 [2020-10-24 01:24:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:40,806 INFO L481 AbstractCegarLoop]: Abstraction has 8268 states and 8786 transitions. [2020-10-24 01:24:40,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:24:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 8268 states and 8786 transitions. [2020-10-24 01:24:40,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-24 01:24:40,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:40,820 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:40,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-24 01:24:40,820 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:40,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:40,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1533184256, now seen corresponding path program 1 times [2020-10-24 01:24:40,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:40,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514224869] [2020-10-24 01:24:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:41,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:41,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:41,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:24:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:41,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 01:24:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:41,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-24 01:24:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:41,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-24 01:24:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:41,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-24 01:24:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:41,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 01:24:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 382 proven. 7 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-10-24 01:24:41,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514224869] [2020-10-24 01:24:41,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:41,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-24 01:24:41,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944339366] [2020-10-24 01:24:41,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 01:24:41,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:41,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 01:24:41,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 01:24:41,401 INFO L87 Difference]: Start difference. First operand 8268 states and 8786 transitions. Second operand 5 states. [2020-10-24 01:24:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:44,176 INFO L93 Difference]: Finished difference Result 13249 states and 14096 transitions. [2020-10-24 01:24:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 01:24:44,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 481 [2020-10-24 01:24:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:44,184 INFO L225 Difference]: With dead ends: 13249 [2020-10-24 01:24:44,184 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 01:24:44,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 01:24:44,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 01:24:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 01:24:44,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 01:24:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 01:24:44,200 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 481 [2020-10-24 01:24:44,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:44,200 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 01:24:44,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 01:24:44,201 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 01:24:44,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 01:24:44,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-24 01:24:44,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 01:24:44,650 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:24:44,926 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:24:59,566 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 124 [2020-10-24 01:25:16,085 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 221 [2020-10-24 01:25:49,154 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 221 [2020-10-24 01:25:50,531 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 221 [2020-10-24 01:25:50,673 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 221 [2020-10-24 01:26:08,307 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 221 [2020-10-24 01:27:25,281 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 221 [2020-10-24 01:28:12,054 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 221 [2020-10-24 01:28:12,234 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 221 [2020-10-24 01:28:12,377 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 221 [2020-10-24 01:28:14,723 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 221 [2020-10-24 01:28:27,479 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:28:30,260 WARN L193 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:28:32,998 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:28:35,763 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:28:36,732 WARN L193 SmtUtils]: Spent 957.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:28:37,732 WARN L193 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:28:38,727 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:28:41,460 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:28:42,423 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:28:45,187 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:28:46,334 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 191 DAG size of output: 74 [2020-10-24 01:28:47,588 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 192 DAG size of output: 75 [2020-10-24 01:28:48,380 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 72 [2020-10-24 01:28:49,493 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 149 DAG size of output: 77 [2020-10-24 01:28:50,273 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 67 [2020-10-24 01:28:51,450 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 143 DAG size of output: 71 [2020-10-24 01:28:54,354 WARN L193 SmtUtils]: Spent 2.89 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:28:55,733 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 220 DAG size of output: 77 [2020-10-24 01:28:56,622 WARN L193 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 76 [2020-10-24 01:28:59,508 WARN L193 SmtUtils]: Spent 2.87 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:29:02,394 WARN L193 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:29:03,379 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 69 [2020-10-24 01:29:04,197 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 72 [2020-10-24 01:29:05,065 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 72 [2020-10-24 01:29:06,252 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 192 DAG size of output: 76 [2020-10-24 01:29:09,148 WARN L193 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:29:09,886 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 72 [2020-10-24 01:29:10,900 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:29:11,732 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 71 [2020-10-24 01:29:12,924 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 210 DAG size of output: 77 [2020-10-24 01:29:13,930 WARN L193 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 69 [2020-10-24 01:29:15,107 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 155 DAG size of output: 80 [2020-10-24 01:29:18,014 WARN L193 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:29:19,274 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 192 DAG size of output: 75 [2020-10-24 01:29:22,201 WARN L193 SmtUtils]: Spent 2.91 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:29:23,039 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 72 [2020-10-24 01:29:24,126 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 145 DAG size of output: 74 [2020-10-24 01:29:25,291 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 154 DAG size of output: 75 [2020-10-24 01:29:28,226 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:29:28,983 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 74 [2020-10-24 01:29:29,981 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 69 [2020-10-24 01:29:30,775 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 69 [2020-10-24 01:29:31,881 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 140 DAG size of output: 67 [2020-10-24 01:29:33,402 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 171 DAG size of output: 86 [2020-10-24 01:29:34,210 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 74 [2020-10-24 01:29:35,062 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 75 [2020-10-24 01:29:38,005 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:29:38,908 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 81 [2020-10-24 01:29:40,089 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 199 DAG size of output: 74 [2020-10-24 01:29:41,053 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 80 [2020-10-24 01:29:41,884 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 71 [2020-10-24 01:29:42,777 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 73 [2020-10-24 01:29:44,067 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 203 DAG size of output: 77 [2020-10-24 01:29:44,812 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 70 [2020-10-24 01:29:45,976 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 191 DAG size of output: 74 [2020-10-24 01:29:47,162 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 153 DAG size of output: 77 [2020-10-24 01:29:48,017 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 69 [2020-10-24 01:29:50,946 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:29:52,055 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 145 DAG size of output: 72 [2020-10-24 01:29:53,132 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 197 DAG size of output: 71 [2020-10-24 01:29:54,129 WARN L193 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:29:54,876 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 72 [2020-10-24 01:29:57,810 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:29:58,562 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 72 [2020-10-24 01:29:59,585 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:30:02,399 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:30:05,210 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:30:08,032 WARN L193 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:30:09,034 WARN L193 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:30:10,028 WARN L193 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:30:11,019 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:30:13,846 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:30:16,803 WARN L193 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:30:17,559 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 72 [2020-10-24 01:30:19,000 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 163 DAG size of output: 83 [2020-10-24 01:30:21,975 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:30:23,119 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 144 DAG size of output: 72 [2020-10-24 01:30:24,013 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 76 [2020-10-24 01:30:25,199 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 148 DAG size of output: 76 [2020-10-24 01:30:26,264 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 144 DAG size of output: 71 [2020-10-24 01:30:27,469 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 143 DAG size of output: 71 [2020-10-24 01:30:29,159 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 204 DAG size of output: 76 [2020-10-24 01:30:30,363 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 213 DAG size of output: 77 [2020-10-24 01:30:31,168 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 69 [2020-10-24 01:30:32,200 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 200 DAG size of output: 76 [2020-10-24 01:30:33,323 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 146 DAG size of output: 76 [2020-10-24 01:30:36,300 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:30:37,316 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 153 DAG size of output: 84 [2020-10-24 01:30:38,412 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 143 DAG size of output: 74 [2020-10-24 01:30:39,170 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 72 [2020-10-24 01:30:40,120 WARN L193 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 82 [2020-10-24 01:30:41,322 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 155 DAG size of output: 74 [2020-10-24 01:30:42,333 WARN L193 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:30:43,084 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 72 [2020-10-24 01:30:46,067 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:30:49,053 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:30:50,064 WARN L193 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:30:52,934 WARN L193 SmtUtils]: Spent 2.86 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:30:55,775 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:30:58,618 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:30:59,654 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:31:00,534 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 71 [2020-10-24 01:31:02,342 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 156 DAG size of output: 82 [2020-10-24 01:31:05,340 WARN L193 SmtUtils]: Spent 2.99 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:31:06,274 WARN L193 SmtUtils]: Spent 925.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 75 [2020-10-24 01:31:07,043 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 73 [2020-10-24 01:31:08,220 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 147 DAG size of output: 75 [2020-10-24 01:31:09,963 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 216 DAG size of output: 85 [2020-10-24 01:31:11,102 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 196 DAG size of output: 75 [2020-10-24 01:31:12,283 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 154 DAG size of output: 78 [2020-10-24 01:31:13,473 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:31:14,558 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 141 DAG size of output: 68 [2020-10-24 01:31:15,475 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 73 [2020-10-24 01:31:16,632 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 158 DAG size of output: 77 [2020-10-24 01:31:19,643 WARN L193 SmtUtils]: Spent 3.00 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:31:20,849 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 191 DAG size of output: 74 [2020-10-24 01:31:23,875 WARN L193 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:31:25,101 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 144 DAG size of output: 71 [2020-10-24 01:31:26,131 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:31:27,177 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:31:30,061 WARN L193 SmtUtils]: Spent 2.87 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:31:31,279 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 209 DAG size of output: 80 [2020-10-24 01:31:32,712 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 155 DAG size of output: 81 [2020-10-24 01:31:35,741 WARN L193 SmtUtils]: Spent 3.02 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:31:36,691 WARN L193 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 78 [2020-10-24 01:31:37,802 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 142 DAG size of output: 70 [2020-10-24 01:31:38,936 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 144 DAG size of output: 71 [2020-10-24 01:31:40,160 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 151 DAG size of output: 81 [2020-10-24 01:31:41,354 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 144 DAG size of output: 72 [2020-10-24 01:31:42,497 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 142 DAG size of output: 69 [2020-10-24 01:31:45,825 WARN L193 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:31:46,788 WARN L193 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 75 [2020-10-24 01:31:48,068 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 149 DAG size of output: 73 [2020-10-24 01:31:49,359 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 143 DAG size of output: 71 [2020-10-24 01:31:50,476 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 141 DAG size of output: 69 [2020-10-24 01:31:51,427 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 73 [2020-10-24 01:31:52,737 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 190 DAG size of output: 74 [2020-10-24 01:31:53,901 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 144 DAG size of output: 72 [2020-10-24 01:31:54,956 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 152 DAG size of output: 78 [2020-10-24 01:31:56,328 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 158 DAG size of output: 76 [2020-10-24 01:31:57,691 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 167 DAG size of output: 77 [2020-10-24 01:31:58,941 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 211 DAG size of output: 80 [2020-10-24 01:32:00,208 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 144 DAG size of output: 74 [2020-10-24 01:32:01,314 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 159 DAG size of output: 78 [2020-10-24 01:32:02,272 WARN L193 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 74 [2020-10-24 01:32:03,924 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 176 DAG size of output: 87 [2020-10-24 01:32:05,094 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 143 DAG size of output: 74 [2020-10-24 01:32:05,867 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 59 [2020-10-24 01:32:07,007 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 197 DAG size of output: 71 [2020-10-24 01:32:10,093 WARN L193 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:32:13,163 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:32:14,321 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 197 DAG size of output: 71 [2020-10-24 01:32:15,480 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 197 DAG size of output: 71 [2020-10-24 01:32:16,627 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:32:17,616 WARN L193 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 75 [2020-10-24 01:32:20,925 WARN L193 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:32:22,086 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 143 DAG size of output: 70 [2020-10-24 01:32:22,974 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 77 [2020-10-24 01:32:23,914 WARN L193 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 72 [2020-10-24 01:32:27,005 WARN L193 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:32:30,257 WARN L193 SmtUtils]: Spent 3.24 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:32:31,850 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 199 DAG size of output: 77 [2020-10-24 01:32:33,025 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 141 DAG size of output: 68 [2020-10-24 01:32:36,097 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:32:37,188 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:32:38,279 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:32:39,043 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 59 [2020-10-24 01:32:40,162 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:32:43,219 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:32:44,303 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:32:45,374 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:32:48,445 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:32:49,552 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:32:52,633 WARN L193 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:32:53,729 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:32:54,854 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 141 DAG size of output: 69 [2020-10-24 01:32:55,727 WARN L193 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 68 [2020-10-24 01:32:56,907 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 141 DAG size of output: 70 [2020-10-24 01:33:00,130 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:33:01,671 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 199 DAG size of output: 77 [2020-10-24 01:33:04,897 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:33:05,740 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 74 [2020-10-24 01:33:07,029 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 148 DAG size of output: 76 [2020-10-24 01:33:08,158 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:33:11,257 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:33:14,383 WARN L193 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:33:15,488 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 141 DAG size of output: 68 [2020-10-24 01:33:16,383 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 70 [2020-10-24 01:33:19,350 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:33:20,442 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:33:21,616 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 197 DAG size of output: 71 [2020-10-24 01:33:22,534 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 73 [2020-10-24 01:33:23,840 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 207 DAG size of output: 78 [2020-10-24 01:33:24,998 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 144 DAG size of output: 73 [2020-10-24 01:33:26,263 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 150 DAG size of output: 74 [2020-10-24 01:33:29,368 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:33:32,477 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:33:33,783 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 150 DAG size of output: 77 [2020-10-24 01:33:34,689 WARN L193 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 74 [2020-10-24 01:33:35,804 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 141 DAG size of output: 68 [2020-10-24 01:33:36,712 WARN L193 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 77 [2020-10-24 01:33:37,822 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 144 DAG size of output: 72 [2020-10-24 01:33:38,667 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 67 [2020-10-24 01:33:40,161 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 199 DAG size of output: 77 [2020-10-24 01:33:41,088 WARN L193 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 72 [2020-10-24 01:33:42,270 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 147 DAG size of output: 72 [2020-10-24 01:33:43,360 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 142 DAG size of output: 69 [2020-10-24 01:33:44,487 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 144 DAG size of output: 72 [2020-10-24 01:33:45,535 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 156 DAG size of output: 81 [2020-10-24 01:33:48,650 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:33:49,949 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 166 DAG size of output: 78 [2020-10-24 01:33:51,867 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 156 DAG size of output: 81 [2020-10-24 01:33:53,092 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 142 DAG size of output: 72 [2020-10-24 01:33:54,352 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 150 DAG size of output: 72 [2020-10-24 01:33:57,477 WARN L193 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:33:58,613 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 142 DAG size of output: 71 [2020-10-24 01:34:01,733 WARN L193 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:34:03,261 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 154 DAG size of output: 77 [2020-10-24 01:34:04,392 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 154 DAG size of output: 75 [2020-10-24 01:34:05,631 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 146 DAG size of output: 74 [2020-10-24 01:34:08,755 WARN L193 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:34:09,626 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 71 [2020-10-24 01:34:11,610 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 238 DAG size of output: 87 [2020-10-24 01:34:12,468 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 73 [2020-10-24 01:34:13,801 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 163 DAG size of output: 79 [2020-10-24 01:34:14,982 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 191 DAG size of output: 74 [2020-10-24 01:34:15,860 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 77 [2020-10-24 01:34:18,979 WARN L193 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:34:19,834 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 67 [2020-10-24 01:34:22,983 WARN L193 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:34:24,054 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 156 DAG size of output: 82 [2020-10-24 01:34:24,955 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 69 [2020-10-24 01:34:26,043 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 200 DAG size of output: 76 [2020-10-24 01:34:26,904 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 73 [2020-10-24 01:34:29,904 WARN L193 SmtUtils]: Spent 2.99 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:34:30,964 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 189 DAG size of output: 73 [2020-10-24 01:34:32,087 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:34:33,198 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:34:36,208 WARN L193 SmtUtils]: Spent 3.00 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:34:37,327 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:34:40,349 WARN L193 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:34:43,520 WARN L193 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:34:44,688 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 142 DAG size of output: 70 [2020-10-24 01:34:47,844 WARN L193 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:34:49,138 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 152 DAG size of output: 80 [2020-10-24 01:34:50,394 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 142 DAG size of output: 69 [2020-10-24 01:34:53,559 WARN L193 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:34:55,168 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 192 DAG size of output: 75 [2020-10-24 01:34:56,267 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 142 DAG size of output: 69 [2020-10-24 01:34:57,156 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 72 [2020-10-24 01:35:00,336 WARN L193 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:35:01,561 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 145 DAG size of output: 72 [2020-10-24 01:35:04,740 WARN L193 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:35:05,860 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 188 DAG size of output: 77 [2020-10-24 01:35:08,971 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:35:12,140 WARN L193 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:35:13,064 WARN L193 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 71 [2020-10-24 01:35:13,979 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 70 [2020-10-24 01:35:15,152 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 142 DAG size of output: 69 [2020-10-24 01:35:18,340 WARN L193 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:35:19,285 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 72 [2020-10-24 01:35:22,484 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:35:23,718 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 149 DAG size of output: 72 [2020-10-24 01:35:24,994 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 191 DAG size of output: 74 [2020-10-24 01:35:28,192 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:35:29,739 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 199 DAG size of output: 77 [2020-10-24 01:35:30,967 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 154 DAG size of output: 73 [2020-10-24 01:35:32,276 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 143 DAG size of output: 71 [2020-10-24 01:35:33,217 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 77 [2020-10-24 01:35:36,432 WARN L193 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:35:39,653 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:35:40,798 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 141 DAG size of output: 68 [2020-10-24 01:35:41,730 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 72 [2020-10-24 01:35:44,798 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 262 DAG size of output: 87 [2020-10-24 01:35:48,023 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:35:49,223 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 191 DAG size of output: 74 [2020-10-24 01:35:50,679 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 225 DAG size of output: 78 [2020-10-24 01:35:53,899 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 268 DAG size of output: 88 [2020-10-24 01:35:55,206 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 152 DAG size of output: 81 [2020-10-24 01:35:56,979 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 174 DAG size of output: 81 [2020-10-24 01:35:58,454 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 200 DAG size of output: 76 [2020-10-24 01:35:59,799 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 210 DAG size of output: 77