/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:23:00,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:23:00,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:23:00,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 01:23:00,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:23:00,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:23:00,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:23:00,539 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 01:23:00,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:23:00,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:23:00,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:23:00,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:23:00,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:23:00,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:23:00,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:23:00,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:23:00,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:23:00,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:23:00,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:23:00,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:23:00,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:23:00,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:23:00,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:23:00,560 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:23:00,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:23:00,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:23:00,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:23:00,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:23:00,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:23:00,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:23:00,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:23:00,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:23:01,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:23:01,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:23:01,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:23:01,008 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:23:01,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-10-24 01:23:01,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f23004148/2cff295557f84541b77943a26731f9f8/FLAGe8b3b59ea [2020-10-24 01:23:01,922 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:23:01,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-10-24 01:23:01,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f23004148/2cff295557f84541b77943a26731f9f8/FLAGe8b3b59ea [2020-10-24 01:23:02,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f23004148/2cff295557f84541b77943a26731f9f8 [2020-10-24 01:23:02,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:23:02,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:23:02,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:23:02,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:23:02,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:23:02,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:02" (1/1) ... [2020-10-24 01:23:02,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae908ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:02, skipping insertion in model container [2020-10-24 01:23:02,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:02" (1/1) ... [2020-10-24 01:23:02,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:23:02,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:23:02,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:23:02,805 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:23:03,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:23:03,058 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:23:03,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:03 WrapperNode [2020-10-24 01:23:03,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:23:03,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:23:03,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:23:03,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:23:03,073 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 01:23:03,074 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 01:23:03,102 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 01:23:03,105 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 01:23:03,146 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 01:23:03,161 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 01:23:03,170 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 01:23:03,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:23:03,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:23:03,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:23:03,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:23:03,186 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 01:23:03,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:23:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:23:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:23:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-24 01:23:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:23:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-24 01:23:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:23:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:23:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:23:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:23:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:23:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 01:23:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:23:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:23:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:23:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:23:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:23:03,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:23:03,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:23:04,814 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:23:04,816 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 01:23:04,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:04 BoogieIcfgContainer [2020-10-24 01:23:04,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:23:04,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:23:04,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:23:04,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:23:04,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:23:02" (1/3) ... [2020-10-24 01:23:04,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd36507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:04, skipping insertion in model container [2020-10-24 01:23:04,830 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 01:23:04,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd36507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:04, skipping insertion in model container [2020-10-24 01:23:04,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:04" (3/3) ... [2020-10-24 01:23:04,833 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2020-10-24 01:23:04,846 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:23:04,853 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:23:04,868 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:23:04,903 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:23:04,903 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:23:04,903 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:23:04,903 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:23:04,903 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:23:04,904 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:23:04,904 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:23:04,904 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:23:04,945 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2020-10-24 01:23:04,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-24 01:23:04,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:04,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:04,993 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:05,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:05,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1702667502, now seen corresponding path program 1 times [2020-10-24 01:23:05,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:05,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863450698] [2020-10-24 01:23:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:05,693 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-24 01:23:05,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:05,854 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 01:23:05,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863450698] [2020-10-24 01:23:05,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:23:05,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 01:23:05,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161412072] [2020-10-24 01:23:05,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 01:23:05,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:05,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 01:23:05,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 01:23:05,893 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 4 states. [2020-10-24 01:23:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:08,789 INFO L93 Difference]: Finished difference Result 1281 states and 1681 transitions. [2020-10-24 01:23:08,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 01:23:08,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-10-24 01:23:08,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:08,813 INFO L225 Difference]: With dead ends: 1281 [2020-10-24 01:23:08,813 INFO L226 Difference]: Without dead ends: 703 [2020-10-24 01:23:08,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 01:23:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-24 01:23:09,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 612. [2020-10-24 01:23:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-10-24 01:23:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 728 transitions. [2020-10-24 01:23:09,057 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 728 transitions. Word has length 163 [2020-10-24 01:23:09,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:09,062 INFO L481 AbstractCegarLoop]: Abstraction has 612 states and 728 transitions. [2020-10-24 01:23:09,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 01:23:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 728 transitions. [2020-10-24 01:23:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-24 01:23:09,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:09,077 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:09,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:23:09,077 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:09,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:09,078 INFO L82 PathProgramCache]: Analyzing trace with hash 154546291, now seen corresponding path program 1 times [2020-10-24 01:23:09,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:09,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778305354] [2020-10-24 01:23:09,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:09,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:09,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:23:09,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778305354] [2020-10-24 01:23:09,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:23:09,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 01:23:09,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202576507] [2020-10-24 01:23:09,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:23:09,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:09,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:23:09,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:23:09,560 INFO L87 Difference]: Start difference. First operand 612 states and 728 transitions. Second operand 8 states. [2020-10-24 01:23:09,795 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:23:12,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:12,897 INFO L93 Difference]: Finished difference Result 1599 states and 1996 transitions. [2020-10-24 01:23:12,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:23:12,898 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-10-24 01:23:12,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:12,915 INFO L225 Difference]: With dead ends: 1599 [2020-10-24 01:23:12,916 INFO L226 Difference]: Without dead ends: 1019 [2020-10-24 01:23:12,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-24 01:23:12,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-10-24 01:23:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 904. [2020-10-24 01:23:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-10-24 01:23:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1136 transitions. [2020-10-24 01:23:13,133 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1136 transitions. Word has length 184 [2020-10-24 01:23:13,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:13,134 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 1136 transitions. [2020-10-24 01:23:13,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:23:13,134 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1136 transitions. [2020-10-24 01:23:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-24 01:23:13,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:13,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:13,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:23:13,152 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:13,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:13,153 INFO L82 PathProgramCache]: Analyzing trace with hash -898477163, now seen corresponding path program 1 times [2020-10-24 01:23:13,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:13,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276288885] [2020-10-24 01:23:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:13,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:13,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:13,467 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 01:23:13,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276288885] [2020-10-24 01:23:13,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:23:13,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 01:23:13,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086541230] [2020-10-24 01:23:13,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:23:13,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:13,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:23:13,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:23:13,483 INFO L87 Difference]: Start difference. First operand 904 states and 1136 transitions. Second operand 8 states. [2020-10-24 01:23:13,678 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:23:14,289 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:23:17,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:17,043 INFO L93 Difference]: Finished difference Result 2723 states and 3695 transitions. [2020-10-24 01:23:17,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-24 01:23:17,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 185 [2020-10-24 01:23:17,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:17,064 INFO L225 Difference]: With dead ends: 2723 [2020-10-24 01:23:17,065 INFO L226 Difference]: Without dead ends: 1851 [2020-10-24 01:23:17,072 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 01:23:17,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-10-24 01:23:17,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1776. [2020-10-24 01:23:17,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1776 states. [2020-10-24 01:23:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2305 transitions. [2020-10-24 01:23:17,449 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2305 transitions. Word has length 185 [2020-10-24 01:23:17,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:17,449 INFO L481 AbstractCegarLoop]: Abstraction has 1776 states and 2305 transitions. [2020-10-24 01:23:17,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:23:17,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2305 transitions. [2020-10-24 01:23:17,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-24 01:23:17,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:17,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:17,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 01:23:17,462 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:17,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:17,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1881653219, now seen corresponding path program 1 times [2020-10-24 01:23:17,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:17,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737959348] [2020-10-24 01:23:17,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:17,652 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-24 01:23:17,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:17,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:17,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 01:23:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-24 01:23:17,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737959348] [2020-10-24 01:23:17,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:17,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:23:17,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065180640] [2020-10-24 01:23:17,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:23:17,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:17,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:23:17,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:23:17,897 INFO L87 Difference]: Start difference. First operand 1776 states and 2305 transitions. Second operand 8 states. [2020-10-24 01:23:18,837 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:23:19,260 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:23:22,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:22,231 INFO L93 Difference]: Finished difference Result 4104 states and 5427 transitions. [2020-10-24 01:23:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:23:22,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-24 01:23:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:22,252 INFO L225 Difference]: With dead ends: 4104 [2020-10-24 01:23:22,252 INFO L226 Difference]: Without dead ends: 2360 [2020-10-24 01:23:22,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:23:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2020-10-24 01:23:22,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 1677. [2020-10-24 01:23:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-10-24 01:23:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 2141 transitions. [2020-10-24 01:23:22,645 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 2141 transitions. Word has length 217 [2020-10-24 01:23:22,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:22,646 INFO L481 AbstractCegarLoop]: Abstraction has 1677 states and 2141 transitions. [2020-10-24 01:23:22,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:23:22,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 2141 transitions. [2020-10-24 01:23:22,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-24 01:23:22,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:22,658 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:22,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 01:23:22,659 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:22,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:22,659 INFO L82 PathProgramCache]: Analyzing trace with hash -233661240, now seen corresponding path program 1 times [2020-10-24 01:23:22,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:22,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230984305] [2020-10-24 01:23:22,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:22,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:22,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:22,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 01:23:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:22,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-24 01:23:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 55 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-24 01:23:23,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230984305] [2020-10-24 01:23:23,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:23,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:23:23,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316788878] [2020-10-24 01:23:23,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:23:23,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:23,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:23:23,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:23:23,020 INFO L87 Difference]: Start difference. First operand 1677 states and 2141 transitions. Second operand 8 states. [2020-10-24 01:23:23,244 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-24 01:23:24,787 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:23:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:27,224 INFO L93 Difference]: Finished difference Result 3886 states and 4994 transitions. [2020-10-24 01:23:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:23:27,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 251 [2020-10-24 01:23:27,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:27,248 INFO L225 Difference]: With dead ends: 3886 [2020-10-24 01:23:27,249 INFO L226 Difference]: Without dead ends: 2241 [2020-10-24 01:23:27,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:23:27,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2020-10-24 01:23:27,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 2015. [2020-10-24 01:23:27,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2015 states. [2020-10-24 01:23:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 2549 transitions. [2020-10-24 01:23:27,717 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 2549 transitions. Word has length 251 [2020-10-24 01:23:27,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:27,717 INFO L481 AbstractCegarLoop]: Abstraction has 2015 states and 2549 transitions. [2020-10-24 01:23:27,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:23:27,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 2549 transitions. [2020-10-24 01:23:27,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-24 01:23:27,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:27,730 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:27,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 01:23:27,730 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:27,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:27,731 INFO L82 PathProgramCache]: Analyzing trace with hash 567719630, now seen corresponding path program 1 times [2020-10-24 01:23:27,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:27,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814073667] [2020-10-24 01:23:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:27,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:27,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:27,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:23:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:27,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-24 01:23:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:28,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-24 01:23:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 112 proven. 25 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-24 01:23:28,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814073667] [2020-10-24 01:23:28,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:28,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:23:28,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323724995] [2020-10-24 01:23:28,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:23:28,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:28,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:23:28,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:23:28,156 INFO L87 Difference]: Start difference. First operand 2015 states and 2549 transitions. Second operand 10 states. [2020-10-24 01:23:28,371 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:23:28,652 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-10-24 01:23:29,278 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-24 01:23:29,610 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:23:31,134 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:23:31,768 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:23:32,667 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:23:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:36,785 INFO L93 Difference]: Finished difference Result 7366 states and 9760 transitions. [2020-10-24 01:23:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-24 01:23:36,787 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 267 [2020-10-24 01:23:36,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:36,820 INFO L225 Difference]: With dead ends: 7366 [2020-10-24 01:23:36,820 INFO L226 Difference]: Without dead ends: 5383 [2020-10-24 01:23:36,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2020-10-24 01:23:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5383 states. [2020-10-24 01:23:38,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5383 to 4016. [2020-10-24 01:23:38,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4016 states. [2020-10-24 01:23:38,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 4989 transitions. [2020-10-24 01:23:38,048 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 4989 transitions. Word has length 267 [2020-10-24 01:23:38,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:38,049 INFO L481 AbstractCegarLoop]: Abstraction has 4016 states and 4989 transitions. [2020-10-24 01:23:38,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:23:38,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 4989 transitions. [2020-10-24 01:23:38,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-24 01:23:38,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:38,072 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:38,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 01:23:38,072 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:38,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:38,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1724793775, now seen corresponding path program 1 times [2020-10-24 01:23:38,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:38,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273444976] [2020-10-24 01:23:38,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:38,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:38,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:38,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:23:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:38,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-24 01:23:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:38,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-24 01:23:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 136 proven. 21 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-24 01:23:38,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273444976] [2020-10-24 01:23:38,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:38,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:23:38,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002180864] [2020-10-24 01:23:38,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:23:38,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:38,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:23:38,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:23:38,382 INFO L87 Difference]: Start difference. First operand 4016 states and 4989 transitions. Second operand 7 states. [2020-10-24 01:23:42,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:42,042 INFO L93 Difference]: Finished difference Result 8906 states and 10993 transitions. [2020-10-24 01:23:42,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 01:23:42,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-24 01:23:42,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:42,071 INFO L225 Difference]: With dead ends: 8906 [2020-10-24 01:23:42,072 INFO L226 Difference]: Without dead ends: 4922 [2020-10-24 01:23:42,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:23:42,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4922 states. [2020-10-24 01:23:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4922 to 4790. [2020-10-24 01:23:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4790 states. [2020-10-24 01:23:43,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4790 states to 4790 states and 5758 transitions. [2020-10-24 01:23:43,338 INFO L78 Accepts]: Start accepts. Automaton has 4790 states and 5758 transitions. Word has length 274 [2020-10-24 01:23:43,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:43,340 INFO L481 AbstractCegarLoop]: Abstraction has 4790 states and 5758 transitions. [2020-10-24 01:23:43,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:23:43,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4790 states and 5758 transitions. [2020-10-24 01:23:43,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-24 01:23:43,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:43,368 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:43,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 01:23:43,369 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:43,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:43,370 INFO L82 PathProgramCache]: Analyzing trace with hash -141743399, now seen corresponding path program 1 times [2020-10-24 01:23:43,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:43,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522550481] [2020-10-24 01:23:43,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:43,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:43,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:43,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:23:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:43,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 01:23:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:43,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-24 01:23:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 137 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-24 01:23:43,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522550481] [2020-10-24 01:23:43,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:43,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:23:43,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503534946] [2020-10-24 01:23:43,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:23:43,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:43,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:23:43,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:23:43,710 INFO L87 Difference]: Start difference. First operand 4790 states and 5758 transitions. Second operand 7 states. [2020-10-24 01:23:47,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:47,446 INFO L93 Difference]: Finished difference Result 11177 states and 13463 transitions. [2020-10-24 01:23:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 01:23:47,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-24 01:23:47,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:47,480 INFO L225 Difference]: With dead ends: 11177 [2020-10-24 01:23:47,482 INFO L226 Difference]: Without dead ends: 6004 [2020-10-24 01:23:47,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:23:47,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6004 states. [2020-10-24 01:23:48,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6004 to 5950. [2020-10-24 01:23:48,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5950 states. [2020-10-24 01:23:48,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 6814 transitions. [2020-10-24 01:23:48,972 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 6814 transitions. Word has length 282 [2020-10-24 01:23:48,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:48,973 INFO L481 AbstractCegarLoop]: Abstraction has 5950 states and 6814 transitions. [2020-10-24 01:23:48,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:23:48,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 6814 transitions. [2020-10-24 01:23:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-24 01:23:48,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:48,994 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:48,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 01:23:48,995 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:48,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:48,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1829437080, now seen corresponding path program 1 times [2020-10-24 01:23:48,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:48,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920195726] [2020-10-24 01:23:48,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:49,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:49,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:49,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:23:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:49,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 01:23:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:49,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-24 01:23:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 146 proven. 35 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-24 01:23:49,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920195726] [2020-10-24 01:23:49,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:49,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 01:23:49,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277525862] [2020-10-24 01:23:49,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 01:23:49,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:49,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 01:23:49,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-24 01:23:49,367 INFO L87 Difference]: Start difference. First operand 5950 states and 6814 transitions. Second operand 9 states. [2020-10-24 01:23:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:56,320 INFO L93 Difference]: Finished difference Result 13555 states and 15450 transitions. [2020-10-24 01:23:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-24 01:23:56,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 288 [2020-10-24 01:23:56,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:56,370 INFO L225 Difference]: With dead ends: 13555 [2020-10-24 01:23:56,370 INFO L226 Difference]: Without dead ends: 7778 [2020-10-24 01:23:56,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2020-10-24 01:23:56,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7778 states. [2020-10-24 01:23:57,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7778 to 7633. [2020-10-24 01:23:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7633 states. [2020-10-24 01:23:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 8546 transitions. [2020-10-24 01:23:57,953 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 8546 transitions. Word has length 288 [2020-10-24 01:23:57,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:57,953 INFO L481 AbstractCegarLoop]: Abstraction has 7633 states and 8546 transitions. [2020-10-24 01:23:57,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 01:23:57,954 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 8546 transitions. [2020-10-24 01:23:57,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-24 01:23:57,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:57,979 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:57,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 01:23:57,979 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:57,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:57,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1769085494, now seen corresponding path program 1 times [2020-10-24 01:23:57,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:57,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894933443] [2020-10-24 01:23:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:58,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:58,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:58,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:23:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:58,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-24 01:23:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:58,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-24 01:23:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 124 proven. 41 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-24 01:23:58,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894933443] [2020-10-24 01:23:58,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:58,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:23:58,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599564482] [2020-10-24 01:23:58,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:23:58,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:58,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:23:58,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:23:58,336 INFO L87 Difference]: Start difference. First operand 7633 states and 8546 transitions. Second operand 8 states. [2020-10-24 01:24:00,382 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:24:03,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:03,735 INFO L93 Difference]: Finished difference Result 15502 states and 17374 transitions. [2020-10-24 01:24:03,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 01:24:03,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 291 [2020-10-24 01:24:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:03,780 INFO L225 Difference]: With dead ends: 15502 [2020-10-24 01:24:03,780 INFO L226 Difference]: Without dead ends: 8042 [2020-10-24 01:24:03,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-24 01:24:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8042 states. [2020-10-24 01:24:05,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8042 to 7488. [2020-10-24 01:24:05,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7488 states. [2020-10-24 01:24:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7488 states to 7488 states and 8332 transitions. [2020-10-24 01:24:05,703 INFO L78 Accepts]: Start accepts. Automaton has 7488 states and 8332 transitions. Word has length 291 [2020-10-24 01:24:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:05,703 INFO L481 AbstractCegarLoop]: Abstraction has 7488 states and 8332 transitions. [2020-10-24 01:24:05,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:24:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 7488 states and 8332 transitions. [2020-10-24 01:24:05,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-24 01:24:05,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:05,719 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:05,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 01:24:05,720 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:05,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:05,720 INFO L82 PathProgramCache]: Analyzing trace with hash 157460476, now seen corresponding path program 1 times [2020-10-24 01:24:05,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:05,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010020318] [2020-10-24 01:24:05,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:05,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:05,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:05,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:24:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:05,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 01:24:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:05,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 01:24:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-24 01:24:06,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010020318] [2020-10-24 01:24:06,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:06,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:24:06,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824012815] [2020-10-24 01:24:06,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:24:06,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:06,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:24:06,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:24:06,258 INFO L87 Difference]: Start difference. First operand 7488 states and 8332 transitions. Second operand 8 states. [2020-10-24 01:24:07,357 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:24:10,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:10,956 INFO L93 Difference]: Finished difference Result 15154 states and 16874 transitions. [2020-10-24 01:24:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 01:24:10,964 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 297 [2020-10-24 01:24:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:10,999 INFO L225 Difference]: With dead ends: 15154 [2020-10-24 01:24:10,999 INFO L226 Difference]: Without dead ends: 7519 [2020-10-24 01:24:11,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-24 01:24:11,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7519 states. [2020-10-24 01:24:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7519 to 6879. [2020-10-24 01:24:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6879 states. [2020-10-24 01:24:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6879 states to 6879 states and 7618 transitions. [2020-10-24 01:24:12,534 INFO L78 Accepts]: Start accepts. Automaton has 6879 states and 7618 transitions. Word has length 297 [2020-10-24 01:24:12,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:12,535 INFO L481 AbstractCegarLoop]: Abstraction has 6879 states and 7618 transitions. [2020-10-24 01:24:12,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:24:12,535 INFO L276 IsEmpty]: Start isEmpty. Operand 6879 states and 7618 transitions. [2020-10-24 01:24:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-24 01:24:12,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:12,552 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:12,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 01:24:12,552 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:12,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:12,553 INFO L82 PathProgramCache]: Analyzing trace with hash 530672667, now seen corresponding path program 1 times [2020-10-24 01:24:12,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:12,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20417619] [2020-10-24 01:24:12,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:12,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:12,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:12,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:24:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:12,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 01:24:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:12,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-24 01:24:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-24 01:24:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 197 proven. 46 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-24 01:24:13,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20417619] [2020-10-24 01:24:13,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:13,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:24:13,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437107609] [2020-10-24 01:24:13,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:24:13,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:13,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:24:13,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:24:13,077 INFO L87 Difference]: Start difference. First operand 6879 states and 7618 transitions. Second operand 10 states. [2020-10-24 01:24:13,527 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-10-24 01:24:14,651 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:24:15,463 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:24:15,967 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:24:16,878 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:24:18,221 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:24:22,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:22,077 INFO L93 Difference]: Finished difference Result 15064 states and 16761 transitions. [2020-10-24 01:24:22,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-24 01:24:22,078 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 337 [2020-10-24 01:24:22,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:22,110 INFO L225 Difference]: With dead ends: 15064 [2020-10-24 01:24:22,111 INFO L226 Difference]: Without dead ends: 8363 [2020-10-24 01:24:22,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2020-10-24 01:24:22,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8363 states. [2020-10-24 01:24:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8363 to 7202. [2020-10-24 01:24:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7202 states. [2020-10-24 01:24:23,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7202 states to 7202 states and 7857 transitions. [2020-10-24 01:24:23,718 INFO L78 Accepts]: Start accepts. Automaton has 7202 states and 7857 transitions. Word has length 337 [2020-10-24 01:24:23,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:23,718 INFO L481 AbstractCegarLoop]: Abstraction has 7202 states and 7857 transitions. [2020-10-24 01:24:23,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:24:23,718 INFO L276 IsEmpty]: Start isEmpty. Operand 7202 states and 7857 transitions. [2020-10-24 01:24:23,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-24 01:24:23,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:23,728 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:23,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 01:24:23,728 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:23,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:23,729 INFO L82 PathProgramCache]: Analyzing trace with hash -299578980, now seen corresponding path program 1 times [2020-10-24 01:24:23,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:23,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005231518] [2020-10-24 01:24:23,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:23,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:23,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:23,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-24 01:24:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:24,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 01:24:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:24,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 01:24:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:24,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-24 01:24:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 222 proven. 40 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-10-24 01:24:24,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005231518] [2020-10-24 01:24:24,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:24,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:24:24,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924961891] [2020-10-24 01:24:24,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:24:24,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:24,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:24:24,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:24:24,206 INFO L87 Difference]: Start difference. First operand 7202 states and 7857 transitions. Second operand 10 states. [2020-10-24 01:24:24,538 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:24:25,701 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-10-24 01:24:25,890 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:24:26,154 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:24:27,221 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:24:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:32,410 INFO L93 Difference]: Finished difference Result 14614 states and 15970 transitions. [2020-10-24 01:24:32,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-24 01:24:32,411 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 355 [2020-10-24 01:24:32,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:32,538 INFO L225 Difference]: With dead ends: 14614 [2020-10-24 01:24:32,538 INFO L226 Difference]: Without dead ends: 7590 [2020-10-24 01:24:32,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2020-10-24 01:24:32,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7590 states. [2020-10-24 01:24:33,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7590 to 6844. [2020-10-24 01:24:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6844 states. [2020-10-24 01:24:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6844 states to 6844 states and 7414 transitions. [2020-10-24 01:24:33,955 INFO L78 Accepts]: Start accepts. Automaton has 6844 states and 7414 transitions. Word has length 355 [2020-10-24 01:24:33,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:33,956 INFO L481 AbstractCegarLoop]: Abstraction has 6844 states and 7414 transitions. [2020-10-24 01:24:33,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:24:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6844 states and 7414 transitions. [2020-10-24 01:24:33,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-24 01:24:33,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:33,970 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:33,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 01:24:33,970 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:33,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:33,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1778024703, now seen corresponding path program 1 times [2020-10-24 01:24:33,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:33,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110448822] [2020-10-24 01:24:33,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:24:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 01:24:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 01:24:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 01:24:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-24 01:24:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 281 proven. 38 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-10-24 01:24:34,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110448822] [2020-10-24 01:24:34,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:34,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:24:34,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515304726] [2020-10-24 01:24:34,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:24:34,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:34,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:24:34,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:24:34,549 INFO L87 Difference]: Start difference. First operand 6844 states and 7414 transitions. Second operand 8 states. [2020-10-24 01:24:34,971 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:24:40,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:40,367 INFO L93 Difference]: Finished difference Result 15747 states and 17116 transitions. [2020-10-24 01:24:40,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-24 01:24:40,369 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 383 [2020-10-24 01:24:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:40,399 INFO L225 Difference]: With dead ends: 15747 [2020-10-24 01:24:40,399 INFO L226 Difference]: Without dead ends: 8221 [2020-10-24 01:24:40,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-24 01:24:40,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8221 states. [2020-10-24 01:24:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8221 to 6081. [2020-10-24 01:24:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6081 states. [2020-10-24 01:24:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 6429 transitions. [2020-10-24 01:24:41,969 INFO L78 Accepts]: Start accepts. Automaton has 6081 states and 6429 transitions. Word has length 383 [2020-10-24 01:24:41,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:41,969 INFO L481 AbstractCegarLoop]: Abstraction has 6081 states and 6429 transitions. [2020-10-24 01:24:41,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:24:41,969 INFO L276 IsEmpty]: Start isEmpty. Operand 6081 states and 6429 transitions. [2020-10-24 01:24:41,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-24 01:24:41,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:41,978 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:41,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-24 01:24:41,978 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:41,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:41,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1601370321, now seen corresponding path program 1 times [2020-10-24 01:24:41,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:41,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792078272] [2020-10-24 01:24:41,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:42,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:42,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:24:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:42,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 01:24:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:42,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-24 01:24:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:42,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 01:24:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 287 proven. 32 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-24 01:24:42,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792078272] [2020-10-24 01:24:42,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:42,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:24:42,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692907593] [2020-10-24 01:24:42,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:24:42,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:42,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:24:42,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:24:42,653 INFO L87 Difference]: Start difference. First operand 6081 states and 6429 transitions. Second operand 8 states. [2020-10-24 01:24:44,083 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:24:46,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:46,928 INFO L93 Difference]: Finished difference Result 12062 states and 12755 transitions. [2020-10-24 01:24:46,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:24:46,928 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 415 [2020-10-24 01:24:46,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:46,946 INFO L225 Difference]: With dead ends: 12062 [2020-10-24 01:24:46,947 INFO L226 Difference]: Without dead ends: 6159 [2020-10-24 01:24:46,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 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 01:24:46,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6159 states. [2020-10-24 01:24:48,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6159 to 5803. [2020-10-24 01:24:48,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5803 states. [2020-10-24 01:24:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 6117 transitions. [2020-10-24 01:24:48,515 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 6117 transitions. Word has length 415 [2020-10-24 01:24:48,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:48,516 INFO L481 AbstractCegarLoop]: Abstraction has 5803 states and 6117 transitions. [2020-10-24 01:24:48,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:24:48,516 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 6117 transitions. [2020-10-24 01:24:48,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-24 01:24:48,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:48,527 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:48,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-24 01:24:48,527 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:48,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:48,528 INFO L82 PathProgramCache]: Analyzing trace with hash -703582026, now seen corresponding path program 1 times [2020-10-24 01:24:48,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:48,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527545921] [2020-10-24 01:24:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:48,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:48,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:48,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:24:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:48,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 01:24:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-24 01:24:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-24 01:24:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:48,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-24 01:24:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 301 proven. 6 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2020-10-24 01:24:49,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527545921] [2020-10-24 01:24:49,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:49,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-24 01:24:49,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894778378] [2020-10-24 01:24:49,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 01:24:49,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:49,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 01:24:49,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 01:24:49,004 INFO L87 Difference]: Start difference. First operand 5803 states and 6117 transitions. Second operand 5 states. [2020-10-24 01:24:52,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:52,127 INFO L93 Difference]: Finished difference Result 11716 states and 12369 transitions. [2020-10-24 01:24:52,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 01:24:52,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 436 [2020-10-24 01:24:52,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:52,133 INFO L225 Difference]: With dead ends: 11716 [2020-10-24 01:24:52,133 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 01:24:52,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 01:24:52,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 01:24:52,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 01:24:52,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 01:24:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 01:24:52,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 436 [2020-10-24 01:24:52,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:52,152 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 01:24:52,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 01:24:52,152 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 01:24:52,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 01:24:52,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-24 01:24:52,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 01:24:52,793 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-24 01:24:53,002 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-24 01:25:08,470 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2020-10-24 01:25:08,684 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2020-10-24 01:25:08,803 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2020-10-24 01:25:08,922 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 113 [2020-10-24 01:25:25,320 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-10-24 01:26:04,186 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-10-24 01:26:05,886 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-10-24 01:26:06,132 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-10-24 01:26:25,411 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-10-24 01:26:34,137 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 129 [2020-10-24 01:26:35,807 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:35,937 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:36,206 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:36,328 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:36,451 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:36,575 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:36,703 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:36,839 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:37,040 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:37,164 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:37,288 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:37,411 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:37,538 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:37,673 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:37,867 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:38,019 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:38,178 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:38,377 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 131 [2020-10-24 01:26:51,687 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-10-24 01:26:53,073 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-10-24 01:27:09,869 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 136 [2020-10-24 01:27:10,038 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:10,199 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 136 [2020-10-24 01:27:10,371 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 136 [2020-10-24 01:27:10,532 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:10,694 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:10,858 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:11,021 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:11,186 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:11,358 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:11,524 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:11,688 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:11,849 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:12,011 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:12,183 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:12,343 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 136 [2020-10-24 01:27:12,508 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:12,671 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:12,837 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:13,007 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:13,204 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 136 [2020-10-24 01:27:13,371 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 136 [2020-10-24 01:27:13,533 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:13,699 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 137 [2020-10-24 01:27:17,165 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-10-24 01:27:17,323 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-10-24 01:27:17,431 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-10-24 01:27:17,601 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-10-24 01:27:17,712 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-10-24 01:27:17,831 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-10-24 01:27:17,954 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-10-24 01:27:18,064 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-10-24 01:27:18,173 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-10-24 01:27:18,289 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-10-24 01:27:18,422 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-10-24 01:27:18,548 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-10-24 01:27:18,657 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-10-24 01:27:18,827 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 126 [2020-10-24 01:27:19,063 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-10-24 01:27:19,185 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2020-10-24 01:27:31,103 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 126 [2020-10-24 01:27:31,209 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 121 [2020-10-24 01:27:31,328 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 130 [2020-10-24 01:27:31,539 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 130 [2020-10-24 01:27:31,762 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 130 [2020-10-24 01:27:31,870 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 126 [2020-10-24 01:27:32,263 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 126 [2020-10-24 01:27:32,368 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 121 [2020-10-24 01:27:32,477 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 126 [2020-10-24 01:27:32,604 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 124 [2020-10-24 01:27:32,839 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 130 [2020-10-24 01:27:54,872 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-10-24 01:27:55,463 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 155 [2020-10-24 01:27:56,462 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 162 [2020-10-24 01:27:57,023 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 167 [2020-10-24 01:27:59,087 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 155 [2020-10-24 01:28:00,071 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 162 [2020-10-24 01:28:41,956 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-10-24 01:28:42,628 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-10-24 01:28:57,114 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-10-24 01:28:57,356 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-10-24 01:28:57,597 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-10-24 01:29:00,323 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 262 [2020-10-24 01:29:12,470 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2020-10-24 01:29:12,689 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2020-10-24 01:29:12,824 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2020-10-24 01:29:12,943 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 113 [2020-10-24 01:29:15,484 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 253 DAG size of output: 85 [2020-10-24 01:29:20,374 WARN L193 SmtUtils]: Spent 4.87 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:29:25,053 WARN L193 SmtUtils]: Spent 4.66 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:29:29,924 WARN L193 SmtUtils]: Spent 4.86 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:29:31,720 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 253 DAG size of output: 85 [2020-10-24 01:29:33,387 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-10-24 01:29:34,733 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 194 DAG size of output: 69 [2020-10-24 01:29:36,418 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-10-24 01:29:41,069 WARN L193 SmtUtils]: Spent 4.64 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:29:42,357 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 194 DAG size of output: 69 [2020-10-24 01:29:47,141 WARN L193 SmtUtils]: Spent 4.77 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:29:48,858 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 276 DAG size of output: 84 [2020-10-24 01:29:50,449 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 260 DAG size of output: 82 [2020-10-24 01:29:51,897 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 258 DAG size of output: 82 [2020-10-24 01:29:53,556 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 215 DAG size of output: 88 [2020-10-24 01:29:54,959 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:29:57,679 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 327 DAG size of output: 100 [2020-10-24 01:30:02,390 WARN L193 SmtUtils]: Spent 4.70 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:30:04,210 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 266 DAG size of output: 86 [2020-10-24 01:30:06,121 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 259 DAG size of output: 83 [2020-10-24 01:30:10,984 WARN L193 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:30:15,773 WARN L193 SmtUtils]: Spent 4.78 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:30:17,221 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 208 DAG size of output: 79 [2020-10-24 01:30:18,758 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 258 DAG size of output: 82 [2020-10-24 01:30:20,306 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 212 DAG size of output: 86 [2020-10-24 01:30:21,856 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 258 DAG size of output: 84 [2020-10-24 01:30:26,716 WARN L193 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:30:28,105 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:30:29,884 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 253 DAG size of output: 85 [2020-10-24 01:30:31,317 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:30:33,112 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 269 DAG size of output: 86 [2020-10-24 01:30:34,494 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 208 DAG size of output: 79 [2020-10-24 01:30:36,618 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 221 DAG size of output: 85 [2020-10-24 01:30:41,427 WARN L193 SmtUtils]: Spent 4.80 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:30:42,989 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 260 DAG size of output: 82 [2020-10-24 01:30:47,855 WARN L193 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:30:49,336 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 258 DAG size of output: 82 [2020-10-24 01:30:50,951 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 212 DAG size of output: 87 [2020-10-24 01:30:52,502 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 216 DAG size of output: 84 [2020-10-24 01:30:57,340 WARN L193 SmtUtils]: Spent 4.83 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:30:58,873 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 211 DAG size of output: 83 [2020-10-24 01:31:00,267 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 208 DAG size of output: 79 [2020-10-24 01:31:01,704 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 209 DAG size of output: 80 [2020-10-24 01:31:03,662 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 247 DAG size of output: 96 [2020-10-24 01:31:05,929 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 241 DAG size of output: 92 [2020-10-24 01:31:07,742 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 219 DAG size of output: 88 [2020-10-24 01:31:09,526 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 212 DAG size of output: 88 [2020-10-24 01:31:14,633 WARN L193 SmtUtils]: Spent 5.09 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:31:16,192 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 215 DAG size of output: 83 [2020-10-24 01:31:18,204 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 259 DAG size of output: 85 [2020-10-24 01:31:20,595 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 221 DAG size of output: 85 [2020-10-24 01:31:22,154 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 209 DAG size of output: 80 [2020-10-24 01:31:23,681 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 212 DAG size of output: 82 [2020-10-24 01:31:25,879 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 266 DAG size of output: 85 [2020-10-24 01:31:27,336 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 211 DAG size of output: 82 [2020-10-24 01:31:29,081 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 276 DAG size of output: 84 [2020-10-24 01:31:30,694 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 218 DAG size of output: 86 [2020-10-24 01:31:32,561 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 231 DAG size of output: 90 [2020-10-24 01:31:37,539 WARN L193 SmtUtils]: Spent 4.96 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:31:39,364 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 211 DAG size of output: 87 [2020-10-24 01:31:41,929 WARN L193 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 229 DAG size of output: 74 [2020-10-24 01:31:43,722 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-10-24 01:31:45,183 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 212 DAG size of output: 82 [2020-10-24 01:31:50,202 WARN L193 SmtUtils]: Spent 5.00 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:31:51,675 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:31:53,462 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-10-24 01:31:58,439 WARN L193 SmtUtils]: Spent 4.96 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:32:03,381 WARN L193 SmtUtils]: Spent 4.93 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:32:08,360 WARN L193 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:32:10,183 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-10-24 01:32:11,981 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-10-24 01:32:13,802 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-10-24 01:32:18,803 WARN L193 SmtUtils]: Spent 4.99 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:32:23,803 WARN L193 SmtUtils]: Spent 4.99 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:32:25,299 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:32:27,946 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 230 DAG size of output: 88 [2020-10-24 01:32:32,939 WARN L193 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:32:34,523 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 213 DAG size of output: 81 [2020-10-24 01:32:36,547 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 269 DAG size of output: 84 [2020-10-24 01:32:38,815 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 215 DAG size of output: 87 [2020-10-24 01:32:40,463 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 220 DAG size of output: 84 [2020-10-24 01:32:43,509 WARN L193 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 290 DAG size of output: 94 [2020-10-24 01:32:45,765 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 266 DAG size of output: 85 [2020-10-24 01:32:47,995 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 291 DAG size of output: 89 [2020-10-24 01:32:49,519 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 209 DAG size of output: 80 [2020-10-24 01:32:51,607 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 269 DAG size of output: 87 [2020-10-24 01:32:53,230 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 216 DAG size of output: 83 [2020-10-24 01:32:58,250 WARN L193 SmtUtils]: Spent 5.01 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:32:59,953 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 213 DAG size of output: 83 [2020-10-24 01:33:01,451 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 207 DAG size of output: 78 [2020-10-24 01:33:02,974 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 211 DAG size of output: 82 [2020-10-24 01:33:04,663 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 213 DAG size of output: 83 [2020-10-24 01:33:06,607 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 222 DAG size of output: 87 [2020-10-24 01:33:08,523 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 253 DAG size of output: 85 [2020-10-24 01:33:10,029 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 208 DAG size of output: 80 [2020-10-24 01:33:15,086 WARN L193 SmtUtils]: Spent 5.04 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:33:20,185 WARN L193 SmtUtils]: Spent 5.08 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:33:22,131 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 253 DAG size of output: 85 [2020-10-24 01:33:27,266 WARN L193 SmtUtils]: Spent 5.12 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:33:32,357 WARN L193 SmtUtils]: Spent 5.08 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:33:37,444 WARN L193 SmtUtils]: Spent 5.07 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:33:39,297 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-10-24 01:33:41,312 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 231 DAG size of output: 92 [2020-10-24 01:33:43,459 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 227 DAG size of output: 87 [2020-10-24 01:33:48,599 WARN L193 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:33:50,322 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 218 DAG size of output: 84 [2020-10-24 01:33:51,865 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 210 DAG size of output: 81 [2020-10-24 01:33:54,253 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 217 DAG size of output: 86 [2020-10-24 01:33:57,519 WARN L193 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 307 DAG size of output: 90 [2020-10-24 01:33:59,676 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 263 DAG size of output: 85 [2020-10-24 01:34:01,369 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 222 DAG size of output: 84 [2020-10-24 01:34:03,482 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 259 DAG size of output: 92 [2020-10-24 01:34:05,121 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 217 DAG size of output: 83 [2020-10-24 01:34:06,766 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 213 DAG size of output: 81 [2020-10-24 01:34:08,532 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 219 DAG size of output: 84 [2020-10-24 01:34:13,682 WARN L193 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:34:15,477 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 276 DAG size of output: 84 [2020-10-24 01:34:20,459 WARN L193 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:34:22,602 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 223 DAG size of output: 90 [2020-10-24 01:34:24,416 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-10-24 01:34:26,292 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 253 DAG size of output: 85 [2020-10-24 01:34:31,269 WARN L193 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:34:33,365 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 260 DAG size of output: 85 [2020-10-24 01:34:35,392 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 224 DAG size of output: 87 [2020-10-24 01:34:40,379 WARN L193 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:34:42,202 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 214 DAG size of output: 88 [2020-10-24 01:34:43,845 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 220 DAG size of output: 84 [2020-10-24 01:34:45,429 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 212 DAG size of output: 83 [2020-10-24 01:34:47,141 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 216 DAG size of output: 84 [2020-10-24 01:34:48,750 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:34:50,258 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 208 DAG size of output: 79 [2020-10-24 01:34:55,291 WARN L193 SmtUtils]: Spent 5.02 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:34:57,500 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 264 DAG size of output: 89 [2020-10-24 01:34:59,189 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 216 DAG size of output: 84 [2020-10-24 01:35:01,728 WARN L193 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 220 DAG size of output: 88 [2020-10-24 01:35:03,223 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 208 DAG size of output: 79 [2020-10-24 01:35:04,888 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 216 DAG size of output: 85 [2020-10-24 01:35:06,606 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 269 DAG size of output: 85 [2020-10-24 01:35:08,214 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:35:10,006 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 216 DAG size of output: 84 [2020-10-24 01:35:11,677 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 220 DAG size of output: 80 [2020-10-24 01:35:13,603 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 244 DAG size of output: 91 [2020-10-24 01:35:15,932 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 285 DAG size of output: 94 [2020-10-24 01:35:17,617 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 221 DAG size of output: 85 [2020-10-24 01:35:19,392 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 228 DAG size of output: 89 [2020-10-24 01:35:21,242 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 210 DAG size of output: 86 [2020-10-24 01:35:24,102 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 263 DAG size of output: 92 [2020-10-24 01:35:25,640 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 207 DAG size of output: 78 [2020-10-24 01:35:27,488 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-10-24 01:35:30,098 WARN L193 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 229 DAG size of output: 74 [2020-10-24 01:35:35,161 WARN L193 SmtUtils]: Spent 5.05 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:35:40,231 WARN L193 SmtUtils]: Spent 5.06 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:35:42,848 WARN L193 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 229 DAG size of output: 74 [2020-10-24 01:35:45,499 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 229 DAG size of output: 74 [2020-10-24 01:35:47,366 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 257 DAG size of output: 83 [2020-10-24 01:35:49,290 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 215 DAG size of output: 88 [2020-10-24 01:35:54,411 WARN L193 SmtUtils]: Spent 5.11 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:35:55,963 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 211 DAG size of output: 81 [2020-10-24 01:35:57,618 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 212 DAG size of output: 83 [2020-10-24 01:35:59,651 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 240 DAG size of output: 96 [2020-10-24 01:36:04,800 WARN L193 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 394 DAG size of output: 110 [2020-10-24 01:36:09,958 WARN L193 SmtUtils]: Spent 5.15 s on a formula simplification. DAG size of input: 394 DAG size of output: 110