/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:10:04,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:10:04,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:10:04,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 01:10:04,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 01:10:04,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 01:10:04,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 01:10:04,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 01:10:04,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 01:10:04,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 01:10:04,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 01:10:04,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 01:10:04,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 01:10:04,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 01:10:04,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 01:10:04,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 01:10:04,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 01:10:04,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:10:04,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:10:04,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:10:04,192 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 01:10:04,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:10:04,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:10:04,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:10:04,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:10:04,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:10:04,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:10:04,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:10:04,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:10:04,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:10:04,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:10:04,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:10:04,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:10:04,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:10:04,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:10:04,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:10:04,229 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:10:04,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:10:04,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:10:04,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:10:04,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:10:04,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:10:04,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:10:04,230 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:10:04,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:10:04,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:10:04,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:10:04,714 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:10:04,715 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:10:04,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-10-24 01:10:04,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc00fb8c5/6f43c6b59c2b4668a5821bd400aa5481/FLAGedb20819c [2020-10-24 01:10:05,539 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:10:05,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-10-24 01:10:05,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc00fb8c5/6f43c6b59c2b4668a5821bd400aa5481/FLAGedb20819c [2020-10-24 01:10:05,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc00fb8c5/6f43c6b59c2b4668a5821bd400aa5481 [2020-10-24 01:10:05,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:10:05,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:10:05,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:10:05,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:10:05,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:10:05,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:10:05" (1/1) ... [2020-10-24 01:10:05,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a921aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:10:05, skipping insertion in model container [2020-10-24 01:10:05,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:10:05" (1/1) ... [2020-10-24 01:10:05,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:10:05,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:10:06,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:10:06,296 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:10:06,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:10:06,515 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:10:06,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:10:06 WrapperNode [2020-10-24 01:10:06,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:10:06,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:10:06,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:10:06,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:10:06,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:10:06" (1/1) ... [2020-10-24 01:10:06,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:10:06" (1/1) ... [2020-10-24 01:10:06,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:10:06" (1/1) ... [2020-10-24 01:10:06,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:10:06" (1/1) ... [2020-10-24 01:10:06,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:10:06" (1/1) ... [2020-10-24 01:10:06,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:10:06" (1/1) ... [2020-10-24 01:10:06,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:10:06" (1/1) ... [2020-10-24 01:10:06,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:10:06,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:10:06,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:10:06,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:10:06,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:10:06" (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 01:10:06,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:10:06,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:10:06,750 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:10:06,751 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-24 01:10:06,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:10:06,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-24 01:10:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:10:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:10:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:10:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:10:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:10:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 01:10:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:10:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:10:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:10:06,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:10:06,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:10:06,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:10:06,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:10:08,426 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:10:08,427 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 01:10:08,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:10:08 BoogieIcfgContainer [2020-10-24 01:10:08,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:10:08,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:10:08,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:10:08,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:10:08,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:10:05" (1/3) ... [2020-10-24 01:10:08,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a64e6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:10:08, skipping insertion in model container [2020-10-24 01:10:08,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:10:06" (2/3) ... [2020-10-24 01:10:08,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a64e6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:10:08, skipping insertion in model container [2020-10-24 01:10:08,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:10:08" (3/3) ... [2020-10-24 01:10:08,446 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2020-10-24 01:10:08,460 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:10:08,467 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:10:08,482 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:10:08,522 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:10:08,522 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:10:08,523 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:10:08,523 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:10:08,523 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:10:08,523 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:10:08,523 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:10:08,523 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:10:08,570 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2020-10-24 01:10:08,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-24 01:10:08,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:10:08,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:10:08,602 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:10:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:10:08,609 INFO L82 PathProgramCache]: Analyzing trace with hash -742173896, now seen corresponding path program 1 times [2020-10-24 01:10:08,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:10:08,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332169852] [2020-10-24 01:10:08,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:10:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:10:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:09,309 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 01:10:09,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332169852] [2020-10-24 01:10:09,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:10:09,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 01:10:09,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746171927] [2020-10-24 01:10:09,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 01:10:09,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:10:09,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 01:10:09,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 01:10:09,338 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 4 states. [2020-10-24 01:10:12,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:10:12,060 INFO L93 Difference]: Finished difference Result 1353 states and 1752 transitions. [2020-10-24 01:10:12,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 01:10:12,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-24 01:10:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:10:12,084 INFO L225 Difference]: With dead ends: 1353 [2020-10-24 01:10:12,085 INFO L226 Difference]: Without dead ends: 750 [2020-10-24 01:10:12,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 01:10:12,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-10-24 01:10:12,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 673. [2020-10-24 01:10:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-10-24 01:10:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 789 transitions. [2020-10-24 01:10:12,316 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 789 transitions. Word has length 146 [2020-10-24 01:10:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:10:12,321 INFO L481 AbstractCegarLoop]: Abstraction has 673 states and 789 transitions. [2020-10-24 01:10:12,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 01:10:12,322 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 789 transitions. [2020-10-24 01:10:12,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-24 01:10:12,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:10:12,341 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:10:12,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:10:12,342 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:10:12,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:10:12,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1974306298, now seen corresponding path program 1 times [2020-10-24 01:10:12,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:10:12,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887661600] [2020-10-24 01:10:12,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:10:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:12,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:10:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:12,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:10:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:10:13,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887661600] [2020-10-24 01:10:13,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:10:13,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 01:10:13,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553772894] [2020-10-24 01:10:13,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 01:10:13,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:10:13,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 01:10:13,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:10:13,143 INFO L87 Difference]: Start difference. First operand 673 states and 789 transitions. Second operand 11 states. [2020-10-24 01:10:13,765 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-24 01:10:18,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:10:18,556 INFO L93 Difference]: Finished difference Result 2531 states and 3317 transitions. [2020-10-24 01:10:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:10:18,557 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-10-24 01:10:18,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:10:18,578 INFO L225 Difference]: With dead ends: 2531 [2020-10-24 01:10:18,578 INFO L226 Difference]: Without dead ends: 1480 [2020-10-24 01:10:18,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:10:18,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2020-10-24 01:10:18,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1248. [2020-10-24 01:10:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2020-10-24 01:10:18,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1477 transitions. [2020-10-24 01:10:18,857 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1477 transitions. Word has length 167 [2020-10-24 01:10:18,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:10:18,857 INFO L481 AbstractCegarLoop]: Abstraction has 1248 states and 1477 transitions. [2020-10-24 01:10:18,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 01:10:18,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1477 transitions. [2020-10-24 01:10:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-24 01:10:18,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:10:18,864 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:10:18,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:10:18,865 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:10:18,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:10:18,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1940010900, now seen corresponding path program 1 times [2020-10-24 01:10:18,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:10:18,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286297340] [2020-10-24 01:10:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:10:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:19,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:10:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:19,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:10:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:10:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 01:10:19,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286297340] [2020-10-24 01:10:19,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:10:19,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:10:19,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372024704] [2020-10-24 01:10:19,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:10:19,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:10:19,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:10:19,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:10:19,134 INFO L87 Difference]: Start difference. First operand 1248 states and 1477 transitions. Second operand 7 states. [2020-10-24 01:10:22,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:10:22,002 INFO L93 Difference]: Finished difference Result 3418 states and 4190 transitions. [2020-10-24 01:10:22,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:10:22,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-10-24 01:10:22,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:10:22,020 INFO L225 Difference]: With dead ends: 3418 [2020-10-24 01:10:22,021 INFO L226 Difference]: Without dead ends: 2202 [2020-10-24 01:10:22,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:10:22,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2020-10-24 01:10:22,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 2136. [2020-10-24 01:10:22,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-24 01:10:22,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 2544 transitions. [2020-10-24 01:10:22,480 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 2544 transitions. Word has length 184 [2020-10-24 01:10:22,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:10:22,480 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 2544 transitions. [2020-10-24 01:10:22,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:10:22,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 2544 transitions. [2020-10-24 01:10:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-24 01:10:22,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:10:22,491 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:10:22,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 01:10:22,491 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:10:22,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:10:22,492 INFO L82 PathProgramCache]: Analyzing trace with hash 755680268, now seen corresponding path program 1 times [2020-10-24 01:10:22,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:10:22,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582314583] [2020-10-24 01:10:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:10:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:22,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:10:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:22,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:10:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:22,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:10:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-24 01:10:23,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582314583] [2020-10-24 01:10:23,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:10:23,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 01:10:23,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972090541] [2020-10-24 01:10:23,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 01:10:23,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:10:23,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 01:10:23,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:10:23,209 INFO L87 Difference]: Start difference. First operand 2136 states and 2544 transitions. Second operand 11 states. [2020-10-24 01:10:23,971 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-24 01:10:28,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:10:28,885 INFO L93 Difference]: Finished difference Result 5599 states and 6814 transitions. [2020-10-24 01:10:28,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:10:28,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 195 [2020-10-24 01:10:28,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:10:28,912 INFO L225 Difference]: With dead ends: 5599 [2020-10-24 01:10:28,913 INFO L226 Difference]: Without dead ends: 3353 [2020-10-24 01:10:28,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:10:28,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2020-10-24 01:10:29,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 2874. [2020-10-24 01:10:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2874 states. [2020-10-24 01:10:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 3341 transitions. [2020-10-24 01:10:29,671 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 3341 transitions. Word has length 195 [2020-10-24 01:10:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:10:29,671 INFO L481 AbstractCegarLoop]: Abstraction has 2874 states and 3341 transitions. [2020-10-24 01:10:29,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 01:10:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 3341 transitions. [2020-10-24 01:10:29,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-24 01:10:29,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:10:29,684 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:10:29,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 01:10:29,684 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:10:29,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:10:29,685 INFO L82 PathProgramCache]: Analyzing trace with hash -157780183, now seen corresponding path program 1 times [2020-10-24 01:10:29,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:10:29,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206600785] [2020-10-24 01:10:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:10:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:10:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:29,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:10:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:29,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:10:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:29,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-24 01:10:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-24 01:10:29,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206600785] [2020-10-24 01:10:29,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:10:29,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:10:29,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516063016] [2020-10-24 01:10:29,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:10:29,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:10:29,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:10:29,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:10:29,973 INFO L87 Difference]: Start difference. First operand 2874 states and 3341 transitions. Second operand 7 states. [2020-10-24 01:10:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:10:33,228 INFO L93 Difference]: Finished difference Result 6617 states and 7851 transitions. [2020-10-24 01:10:33,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 01:10:33,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-24 01:10:33,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:10:33,257 INFO L225 Difference]: With dead ends: 6617 [2020-10-24 01:10:33,258 INFO L226 Difference]: Without dead ends: 3916 [2020-10-24 01:10:33,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:10:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3916 states. [2020-10-24 01:10:34,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3916 to 3688. [2020-10-24 01:10:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3688 states. [2020-10-24 01:10:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 4336 transitions. [2020-10-24 01:10:34,141 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 4336 transitions. Word has length 218 [2020-10-24 01:10:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:10:34,141 INFO L481 AbstractCegarLoop]: Abstraction has 3688 states and 4336 transitions. [2020-10-24 01:10:34,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:10:34,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 4336 transitions. [2020-10-24 01:10:34,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-24 01:10:34,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:10:34,156 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:10:34,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 01:10:34,157 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:10:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:10:34,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1796871503, now seen corresponding path program 1 times [2020-10-24 01:10:34,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:10:34,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428546189] [2020-10-24 01:10:34,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:10:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:34,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:10:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:34,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:10:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:10:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 01:10:34,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428546189] [2020-10-24 01:10:34,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:10:34,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:10:34,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288800312] [2020-10-24 01:10:34,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:10:34,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:10:34,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:10:34,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:10:34,503 INFO L87 Difference]: Start difference. First operand 3688 states and 4336 transitions. Second operand 8 states. [2020-10-24 01:10:35,815 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:10:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:10:38,449 INFO L93 Difference]: Finished difference Result 7609 states and 9003 transitions. [2020-10-24 01:10:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 01:10:38,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-10-24 01:10:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:10:38,480 INFO L225 Difference]: With dead ends: 7609 [2020-10-24 01:10:38,480 INFO L226 Difference]: Without dead ends: 4094 [2020-10-24 01:10:38,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-24 01:10:38,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2020-10-24 01:10:39,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3998. [2020-10-24 01:10:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-24 01:10:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 4689 transitions. [2020-10-24 01:10:39,274 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 4689 transitions. Word has length 230 [2020-10-24 01:10:39,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:10:39,275 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 4689 transitions. [2020-10-24 01:10:39,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:10:39,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 4689 transitions. [2020-10-24 01:10:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-24 01:10:39,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:10:39,289 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:10:39,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 01:10:39,290 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:10:39,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:10:39,290 INFO L82 PathProgramCache]: Analyzing trace with hash 912048621, now seen corresponding path program 1 times [2020-10-24 01:10:39,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:10:39,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204462749] [2020-10-24 01:10:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:10:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:39,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:10:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:39,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:10:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:39,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:10:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 01:10:39,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204462749] [2020-10-24 01:10:39,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:10:39,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:10:39,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928541523] [2020-10-24 01:10:39,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:10:39,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:10:39,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:10:39,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:10:39,619 INFO L87 Difference]: Start difference. First operand 3998 states and 4689 transitions. Second operand 7 states. [2020-10-24 01:10:42,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:10:42,793 INFO L93 Difference]: Finished difference Result 8003 states and 9369 transitions. [2020-10-24 01:10:42,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 01:10:42,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-24 01:10:42,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:10:42,817 INFO L225 Difference]: With dead ends: 8003 [2020-10-24 01:10:42,818 INFO L226 Difference]: Without dead ends: 4021 [2020-10-24 01:10:42,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:10:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2020-10-24 01:10:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3968. [2020-10-24 01:10:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3968 states. [2020-10-24 01:10:43,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 4466 transitions. [2020-10-24 01:10:43,493 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 4466 transitions. Word has length 244 [2020-10-24 01:10:43,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:10:43,493 INFO L481 AbstractCegarLoop]: Abstraction has 3968 states and 4466 transitions. [2020-10-24 01:10:43,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:10:43,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 4466 transitions. [2020-10-24 01:10:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-24 01:10:43,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:10:43,507 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:10:43,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 01:10:43,507 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:10:43,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:10:43,508 INFO L82 PathProgramCache]: Analyzing trace with hash -854649261, now seen corresponding path program 1 times [2020-10-24 01:10:43,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:10:43,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252624088] [2020-10-24 01:10:43,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:10:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:10:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:43,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:10:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:43,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:10:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:43,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 01:10:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 82 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-24 01:10:44,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252624088] [2020-10-24 01:10:44,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:10:44,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 01:10:44,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758233135] [2020-10-24 01:10:44,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 01:10:44,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:10:44,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 01:10:44,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:10:44,120 INFO L87 Difference]: Start difference. First operand 3968 states and 4466 transitions. Second operand 11 states. [2020-10-24 01:10:45,455 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-24 01:10:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:10:48,370 INFO L93 Difference]: Finished difference Result 8878 states and 10175 transitions. [2020-10-24 01:10:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 01:10:48,371 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 247 [2020-10-24 01:10:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:10:48,396 INFO L225 Difference]: With dead ends: 8878 [2020-10-24 01:10:48,397 INFO L226 Difference]: Without dead ends: 4810 [2020-10-24 01:10:48,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2020-10-24 01:10:48,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2020-10-24 01:10:49,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4206. [2020-10-24 01:10:49,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4206 states. [2020-10-24 01:10:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4206 states to 4206 states and 4680 transitions. [2020-10-24 01:10:49,131 INFO L78 Accepts]: Start accepts. Automaton has 4206 states and 4680 transitions. Word has length 247 [2020-10-24 01:10:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:10:49,132 INFO L481 AbstractCegarLoop]: Abstraction has 4206 states and 4680 transitions. [2020-10-24 01:10:49,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 01:10:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4206 states and 4680 transitions. [2020-10-24 01:10:49,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-24 01:10:49,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:10:49,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:10:49,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 01:10:49,145 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:10:49,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:10:49,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1743339092, now seen corresponding path program 1 times [2020-10-24 01:10:49,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:10:49,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45332218] [2020-10-24 01:10:49,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:10:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:49,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:10:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:10:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:49,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:10:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-24 01:10:49,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45332218] [2020-10-24 01:10:49,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:10:49,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 01:10:49,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829631772] [2020-10-24 01:10:49,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 01:10:49,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:10:49,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 01:10:49,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:10:49,835 INFO L87 Difference]: Start difference. First operand 4206 states and 4680 transitions. Second operand 11 states. [2020-10-24 01:10:52,917 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-24 01:10:56,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:10:56,823 INFO L93 Difference]: Finished difference Result 11310 states and 12753 transitions. [2020-10-24 01:10:56,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 01:10:56,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 250 [2020-10-24 01:10:56,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:10:56,875 INFO L225 Difference]: With dead ends: 11310 [2020-10-24 01:10:56,875 INFO L226 Difference]: Without dead ends: 6571 [2020-10-24 01:10:56,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2020-10-24 01:10:56,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6571 states. [2020-10-24 01:10:58,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6571 to 5839. [2020-10-24 01:10:58,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5839 states. [2020-10-24 01:10:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 6398 transitions. [2020-10-24 01:10:58,080 INFO L78 Accepts]: Start accepts. Automaton has 5839 states and 6398 transitions. Word has length 250 [2020-10-24 01:10:58,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:10:58,080 INFO L481 AbstractCegarLoop]: Abstraction has 5839 states and 6398 transitions. [2020-10-24 01:10:58,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 01:10:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5839 states and 6398 transitions. [2020-10-24 01:10:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-24 01:10:58,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:10:58,094 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:10:58,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 01:10:58,094 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:10:58,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:10:58,095 INFO L82 PathProgramCache]: Analyzing trace with hash 2082241577, now seen corresponding path program 1 times [2020-10-24 01:10:58,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:10:58,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807491643] [2020-10-24 01:10:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:10:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:58,378 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-24 01:10:58,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:10:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:58,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:10:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:58,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:10:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:58,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 01:10:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:10:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 165 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-24 01:10:58,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807491643] [2020-10-24 01:10:58,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:10:58,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 01:10:58,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304403661] [2020-10-24 01:10:58,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 01:10:58,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:10:58,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 01:10:58,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-24 01:10:58,872 INFO L87 Difference]: Start difference. First operand 5839 states and 6398 transitions. Second operand 16 states. [2020-10-24 01:10:59,378 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-24 01:10:59,830 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-24 01:11:00,375 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-24 01:11:00,790 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-10-24 01:11:01,155 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-24 01:11:03,244 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-24 01:11:03,494 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-24 01:11:05,343 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-24 01:11:06,677 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-24 01:11:09,995 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-10-24 01:11:10,552 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-24 01:11:11,022 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-10-24 01:11:12,313 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-24 01:11:14,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:11:14,333 INFO L93 Difference]: Finished difference Result 14091 states and 15559 transitions. [2020-10-24 01:11:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-24 01:11:14,333 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 288 [2020-10-24 01:11:14,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:11:14,378 INFO L225 Difference]: With dead ends: 14091 [2020-10-24 01:11:14,378 INFO L226 Difference]: Without dead ends: 8425 [2020-10-24 01:11:14,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2285 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1096, Invalid=5546, Unknown=0, NotChecked=0, Total=6642 [2020-10-24 01:11:14,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8425 states. [2020-10-24 01:11:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8425 to 7159. [2020-10-24 01:11:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7159 states. [2020-10-24 01:11:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7159 states to 7159 states and 7809 transitions. [2020-10-24 01:11:16,153 INFO L78 Accepts]: Start accepts. Automaton has 7159 states and 7809 transitions. Word has length 288 [2020-10-24 01:11:16,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:11:16,154 INFO L481 AbstractCegarLoop]: Abstraction has 7159 states and 7809 transitions. [2020-10-24 01:11:16,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 01:11:16,154 INFO L276 IsEmpty]: Start isEmpty. Operand 7159 states and 7809 transitions. [2020-10-24 01:11:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-24 01:11:16,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:11:16,166 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:11:16,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 01:11:16,166 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:11:16,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:11:16,167 INFO L82 PathProgramCache]: Analyzing trace with hash 296695306, now seen corresponding path program 1 times [2020-10-24 01:11:16,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:11:16,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983332367] [2020-10-24 01:11:16,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:11:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:16,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:11:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:16,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:11:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:16,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-24 01:11:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:16,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 01:11:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 143 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-24 01:11:16,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983332367] [2020-10-24 01:11:16,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:11:16,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 01:11:16,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80141206] [2020-10-24 01:11:16,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 01:11:16,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:11:16,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 01:11:16,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:11:16,770 INFO L87 Difference]: Start difference. First operand 7159 states and 7809 transitions. Second operand 11 states. [2020-10-24 01:11:18,458 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-24 01:11:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:11:22,107 INFO L93 Difference]: Finished difference Result 14469 states and 15718 transitions. [2020-10-24 01:11:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:11:22,108 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 290 [2020-10-24 01:11:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:11:22,142 INFO L225 Difference]: With dead ends: 14469 [2020-10-24 01:11:22,142 INFO L226 Difference]: Without dead ends: 7611 [2020-10-24 01:11:22,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:11:22,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7611 states. [2020-10-24 01:11:23,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7611 to 7144. [2020-10-24 01:11:23,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7144 states. [2020-10-24 01:11:23,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7144 states to 7144 states and 7751 transitions. [2020-10-24 01:11:23,887 INFO L78 Accepts]: Start accepts. Automaton has 7144 states and 7751 transitions. Word has length 290 [2020-10-24 01:11:23,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:11:23,888 INFO L481 AbstractCegarLoop]: Abstraction has 7144 states and 7751 transitions. [2020-10-24 01:11:23,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 01:11:23,888 INFO L276 IsEmpty]: Start isEmpty. Operand 7144 states and 7751 transitions. [2020-10-24 01:11:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-24 01:11:23,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:11:23,904 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:11:23,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 01:11:23,904 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:11:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:11:23,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1148795768, now seen corresponding path program 1 times [2020-10-24 01:11:23,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:11:23,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675780924] [2020-10-24 01:11:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:11:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:24,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:11:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:24,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:11:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:24,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-24 01:11:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:24,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 01:11:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:24,318 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 212 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-24 01:11:24,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675780924] [2020-10-24 01:11:24,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:11:24,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:11:24,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701009034] [2020-10-24 01:11:24,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:11:24,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:11:24,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:11:24,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:11:24,320 INFO L87 Difference]: Start difference. First operand 7144 states and 7751 transitions. Second operand 10 states. [2020-10-24 01:11:25,667 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-24 01:11:27,926 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-10-24 01:11:29,809 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-24 01:11:30,196 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-24 01:11:32,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:11:32,738 INFO L93 Difference]: Finished difference Result 14616 states and 15879 transitions. [2020-10-24 01:11:32,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-24 01:11:32,739 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 306 [2020-10-24 01:11:32,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:11:32,787 INFO L225 Difference]: With dead ends: 14616 [2020-10-24 01:11:32,787 INFO L226 Difference]: Without dead ends: 7650 [2020-10-24 01:11:32,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=303, Invalid=1179, Unknown=0, NotChecked=0, Total=1482 [2020-10-24 01:11:32,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7650 states. [2020-10-24 01:11:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7650 to 6706. [2020-10-24 01:11:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6706 states. [2020-10-24 01:11:34,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6706 states to 6706 states and 7144 transitions. [2020-10-24 01:11:34,572 INFO L78 Accepts]: Start accepts. Automaton has 6706 states and 7144 transitions. Word has length 306 [2020-10-24 01:11:34,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:11:34,573 INFO L481 AbstractCegarLoop]: Abstraction has 6706 states and 7144 transitions. [2020-10-24 01:11:34,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:11:34,573 INFO L276 IsEmpty]: Start isEmpty. Operand 6706 states and 7144 transitions. [2020-10-24 01:11:34,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-24 01:11:34,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:11:34,585 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:11:34,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 01:11:34,585 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:11:34,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:11:34,586 INFO L82 PathProgramCache]: Analyzing trace with hash -110496964, now seen corresponding path program 1 times [2020-10-24 01:11:34,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:11:34,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88892302] [2020-10-24 01:11:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:11:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:34,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:11:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:34,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:11:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:34,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-24 01:11:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:34,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-24 01:11:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-24 01:11:35,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88892302] [2020-10-24 01:11:35,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:11:35,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 01:11:35,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009285558] [2020-10-24 01:11:35,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 01:11:35,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:11:35,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 01:11:35,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:11:35,300 INFO L87 Difference]: Start difference. First operand 6706 states and 7144 transitions. Second operand 11 states. [2020-10-24 01:11:38,168 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-24 01:11:41,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:11:41,621 INFO L93 Difference]: Finished difference Result 13864 states and 14738 transitions. [2020-10-24 01:11:41,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:11:41,622 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 312 [2020-10-24 01:11:41,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:11:41,654 INFO L225 Difference]: With dead ends: 13864 [2020-10-24 01:11:41,655 INFO L226 Difference]: Without dead ends: 7433 [2020-10-24 01:11:41,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:11:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7433 states. [2020-10-24 01:11:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7433 to 6683. [2020-10-24 01:11:42,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6683 states. [2020-10-24 01:11:42,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6683 states to 6683 states and 7102 transitions. [2020-10-24 01:11:42,941 INFO L78 Accepts]: Start accepts. Automaton has 6683 states and 7102 transitions. Word has length 312 [2020-10-24 01:11:42,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:11:42,941 INFO L481 AbstractCegarLoop]: Abstraction has 6683 states and 7102 transitions. [2020-10-24 01:11:42,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 01:11:42,942 INFO L276 IsEmpty]: Start isEmpty. Operand 6683 states and 7102 transitions. [2020-10-24 01:11:42,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-24 01:11:42,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:11:42,951 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:11:42,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 01:11:42,951 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:11:42,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:11:42,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1077043949, now seen corresponding path program 1 times [2020-10-24 01:11:42,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:11:42,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462489464] [2020-10-24 01:11:42,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:11:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:43,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:11:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:43,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:11:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:43,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-24 01:11:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:43,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-24 01:11:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-24 01:11:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:43,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 01:11:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 239 proven. 35 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-24 01:11:43,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462489464] [2020-10-24 01:11:43,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:11:43,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:11:43,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74976558] [2020-10-24 01:11:43,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:11:43,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:11:43,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:11:43,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:11:43,482 INFO L87 Difference]: Start difference. First operand 6683 states and 7102 transitions. Second operand 10 states. [2020-10-24 01:11:43,843 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-10-24 01:11:46,708 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-24 01:11:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:11:49,937 INFO L93 Difference]: Finished difference Result 13955 states and 14884 transitions. [2020-10-24 01:11:49,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-24 01:11:49,937 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 340 [2020-10-24 01:11:49,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:11:49,970 INFO L225 Difference]: With dead ends: 13955 [2020-10-24 01:11:49,970 INFO L226 Difference]: Without dead ends: 7450 [2020-10-24 01:11:49,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2020-10-24 01:11:49,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7450 states. [2020-10-24 01:11:51,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7450 to 6647. [2020-10-24 01:11:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6647 states. [2020-10-24 01:11:51,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6647 states to 6647 states and 7029 transitions. [2020-10-24 01:11:51,351 INFO L78 Accepts]: Start accepts. Automaton has 6647 states and 7029 transitions. Word has length 340 [2020-10-24 01:11:51,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:11:51,351 INFO L481 AbstractCegarLoop]: Abstraction has 6647 states and 7029 transitions. [2020-10-24 01:11:51,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:11:51,351 INFO L276 IsEmpty]: Start isEmpty. Operand 6647 states and 7029 transitions. [2020-10-24 01:11:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-24 01:11:51,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:11:51,362 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:11:51,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-24 01:11:51,362 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:11:51,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:11:51,363 INFO L82 PathProgramCache]: Analyzing trace with hash -404534197, now seen corresponding path program 1 times [2020-10-24 01:11:51,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:11:51,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568818941] [2020-10-24 01:11:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:11:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:51,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:11:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:51,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:11:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:51,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:11:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:51,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 01:11:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 200 proven. 3 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-24 01:11:52,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568818941] [2020-10-24 01:11:52,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:11:52,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 01:11:52,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942613781] [2020-10-24 01:11:52,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 01:11:52,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:11:52,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 01:11:52,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:11:52,166 INFO L87 Difference]: Start difference. First operand 6647 states and 7029 transitions. Second operand 11 states. [2020-10-24 01:11:54,388 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-24 01:11:56,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:11:56,462 INFO L93 Difference]: Finished difference Result 12784 states and 13485 transitions. [2020-10-24 01:11:56,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 01:11:56,463 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 347 [2020-10-24 01:11:56,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:11:56,484 INFO L225 Difference]: With dead ends: 12784 [2020-10-24 01:11:56,484 INFO L226 Difference]: Without dead ends: 6507 [2020-10-24 01:11:56,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2020-10-24 01:11:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6507 states. [2020-10-24 01:11:57,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6507 to 6478. [2020-10-24 01:11:57,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6478 states. [2020-10-24 01:11:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6478 states to 6478 states and 6839 transitions. [2020-10-24 01:11:57,933 INFO L78 Accepts]: Start accepts. Automaton has 6478 states and 6839 transitions. Word has length 347 [2020-10-24 01:11:57,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:11:57,933 INFO L481 AbstractCegarLoop]: Abstraction has 6478 states and 6839 transitions. [2020-10-24 01:11:57,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 01:11:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6478 states and 6839 transitions. [2020-10-24 01:11:57,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-24 01:11:57,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:11:57,941 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:11:57,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-24 01:11:57,941 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:11:57,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:11:57,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1454021021, now seen corresponding path program 1 times [2020-10-24 01:11:57,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:11:57,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212411162] [2020-10-24 01:11:57,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:11:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:58,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:11:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:58,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:11:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:11:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:58,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 01:11:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:58,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-24 01:11:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-24 01:11:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-24 01:11:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:11:58,603 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 299 proven. 87 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-24 01:11:58,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212411162] [2020-10-24 01:11:58,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:11:58,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-24 01:11:58,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475956480] [2020-10-24 01:11:58,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-24 01:11:58,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:11:58,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-24 01:11:58,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:11:58,605 INFO L87 Difference]: Start difference. First operand 6478 states and 6839 transitions. Second operand 17 states. [2020-10-24 01:11:59,070 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-24 01:11:59,958 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-24 01:12:00,778 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-10-24 01:12:01,991 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-10-24 01:12:02,839 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-10-24 01:12:04,509 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-10-24 01:12:04,799 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-10-24 01:12:05,726 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-24 01:12:07,176 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-24 01:12:09,329 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2020-10-24 01:12:10,589 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:12:10,995 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-24 01:12:11,743 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2020-10-24 01:12:12,334 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-10-24 01:12:12,870 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-24 01:12:13,698 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-24 01:12:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:12:15,642 INFO L93 Difference]: Finished difference Result 14758 states and 15611 transitions. [2020-10-24 01:12:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-10-24 01:12:15,644 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 394 [2020-10-24 01:12:15,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:12:15,674 INFO L225 Difference]: With dead ends: 14758 [2020-10-24 01:12:15,675 INFO L226 Difference]: Without dead ends: 8458 [2020-10-24 01:12:15,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3128 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1114, Invalid=7442, Unknown=0, NotChecked=0, Total=8556 [2020-10-24 01:12:15,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8458 states. [2020-10-24 01:12:17,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8458 to 6613. [2020-10-24 01:12:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6613 states. [2020-10-24 01:12:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6613 states to 6613 states and 6956 transitions. [2020-10-24 01:12:17,423 INFO L78 Accepts]: Start accepts. Automaton has 6613 states and 6956 transitions. Word has length 394 [2020-10-24 01:12:17,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:12:17,424 INFO L481 AbstractCegarLoop]: Abstraction has 6613 states and 6956 transitions. [2020-10-24 01:12:17,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-24 01:12:17,424 INFO L276 IsEmpty]: Start isEmpty. Operand 6613 states and 6956 transitions. [2020-10-24 01:12:17,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-24 01:12:17,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:12:17,432 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:12:17,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-24 01:12:17,432 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:12:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:12:17,433 INFO L82 PathProgramCache]: Analyzing trace with hash 958765504, now seen corresponding path program 1 times [2020-10-24 01:12:17,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:12:17,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161764466] [2020-10-24 01:12:17,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:12:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:12:17,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:12:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:12:17,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:12:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:12:17,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:12:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:12:17,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 01:12:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:12:17,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-24 01:12:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:12:17,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-24 01:12:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:12:17,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-24 01:12:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:12:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 275 proven. 52 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-24 01:12:17,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161764466] [2020-10-24 01:12:17,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:12:17,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:12:17,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466620369] [2020-10-24 01:12:17,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:12:17,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:12:17,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:12:17,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:12:17,875 INFO L87 Difference]: Start difference. First operand 6613 states and 6956 transitions. Second operand 7 states. [2020-10-24 01:12:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:12:21,036 INFO L93 Difference]: Finished difference Result 12799 states and 13429 transitions. [2020-10-24 01:12:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 01:12:21,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 414 [2020-10-24 01:12:21,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:12:21,044 INFO L225 Difference]: With dead ends: 12799 [2020-10-24 01:12:21,044 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 01:12:21,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:12:21,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 01:12:21,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 01:12:21,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 01:12:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 01:12:21,067 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 414 [2020-10-24 01:12:21,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:12:21,067 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 01:12:21,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:12:21,067 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 01:12:21,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 01:12:21,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-24 01:12:21,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 01:12:21,788 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:12:37,660 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 115 [2020-10-24 01:12:37,926 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 113 [2020-10-24 01:12:56,933 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-10-24 01:13:32,419 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-10-24 01:13:33,787 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-10-24 01:13:33,991 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-10-24 01:13:52,001 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-10-24 01:14:51,990 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-10-24 01:14:52,123 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-10-24 01:14:52,354 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-10-24 01:14:52,489 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-10-24 01:14:52,622 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-10-24 01:14:52,744 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 116 [2020-10-24 01:14:52,882 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-10-24 01:14:53,031 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-10-24 01:14:53,242 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 116 [2020-10-24 01:14:53,413 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 116 [2020-10-24 01:14:53,537 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2020-10-24 01:14:53,649 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2020-10-24 01:14:53,799 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-10-24 01:14:53,906 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2020-10-24 01:14:54,049 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-10-24 01:14:54,164 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 116 [2020-10-24 01:14:54,269 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2020-10-24 01:14:54,375 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2020-10-24 01:14:54,513 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-10-24 01:14:54,647 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-10-24 01:14:54,753 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2020-10-24 01:14:54,893 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 131 [2020-10-24 01:15:33,868 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-10-24 01:16:31,678 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-10-24 01:16:31,875 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-10-24 01:16:32,073 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-10-24 01:16:34,143 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 261 [2020-10-24 01:16:45,624 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-10-24 01:16:48,805 WARN L193 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:16:52,000 WARN L193 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:16:55,177 WARN L193 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:16:56,409 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:16:57,700 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-10-24 01:16:58,949 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:17:02,109 WARN L193 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:17:03,400 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-10-24 01:17:06,587 WARN L193 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:17:07,585 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 86 [2020-10-24 01:17:09,022 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 244 DAG size of output: 85 [2020-10-24 01:17:09,968 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 82 [2020-10-24 01:17:10,996 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 194 DAG size of output: 86 [2020-10-24 01:17:12,240 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 194 DAG size of output: 85 [2020-10-24 01:17:13,826 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 250 DAG size of output: 88 [2020-10-24 01:17:17,030 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:17:18,533 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 259 DAG size of output: 89 [2020-10-24 01:17:19,720 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 243 DAG size of output: 86 [2020-10-24 01:17:22,913 WARN L193 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:17:26,113 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:17:27,020 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 82 [2020-10-24 01:17:27,981 WARN L193 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 82 [2020-10-24 01:17:29,004 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 190 DAG size of output: 82 [2020-10-24 01:17:30,455 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 245 DAG size of output: 86 [2020-10-24 01:17:31,366 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2020-10-24 01:17:34,590 WARN L193 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:17:35,877 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:17:36,808 WARN L193 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 82 [2020-10-24 01:17:38,376 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 260 DAG size of output: 85 [2020-10-24 01:17:39,371 WARN L193 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 81 [2020-10-24 01:17:40,724 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 197 DAG size of output: 86 [2020-10-24 01:17:43,973 WARN L193 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:17:45,430 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 244 DAG size of output: 85 [2020-10-24 01:17:48,658 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:17:49,628 WARN L193 SmtUtils]: Spent 957.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 82 [2020-10-24 01:17:50,600 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 83 [2020-10-24 01:17:51,614 WARN L193 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 82 [2020-10-24 01:17:54,848 WARN L193 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:17:56,143 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 190 DAG size of output: 81 [2020-10-24 01:17:57,146 WARN L193 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 81 [2020-10-24 01:17:58,422 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 195 DAG size of output: 85 [2020-10-24 01:17:59,493 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 189 DAG size of output: 81 [2020-10-24 01:18:01,515 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 292 DAG size of output: 97 [2020-10-24 01:18:02,834 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 198 DAG size of output: 82 [2020-10-24 01:18:03,808 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 82 [2020-10-24 01:18:07,062 WARN L193 SmtUtils]: Spent 3.24 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:18:08,403 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 195 DAG size of output: 83 [2020-10-24 01:18:09,638 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 245 DAG size of output: 84 [2020-10-24 01:18:10,785 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 197 DAG size of output: 87 [2020-10-24 01:18:11,739 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 84 [2020-10-24 01:18:12,781 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 190 DAG size of output: 79 [2020-10-24 01:18:14,337 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 253 DAG size of output: 88 [2020-10-24 01:18:15,251 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 80 [2020-10-24 01:18:16,279 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 240 DAG size of output: 86 [2020-10-24 01:18:17,244 WARN L193 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 82 [2020-10-24 01:18:18,345 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 189 DAG size of output: 81 [2020-10-24 01:18:21,611 WARN L193 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:18:22,673 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 191 DAG size of output: 84 [2020-10-24 01:18:23,856 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 214 DAG size of output: 67 [2020-10-24 01:18:25,186 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-10-24 01:18:26,103 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2020-10-24 01:18:27,017 WARN L193 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2020-10-24 01:18:30,297 WARN L193 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:18:31,576 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:18:34,815 WARN L193 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:18:38,100 WARN L193 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:18:41,357 WARN L193 SmtUtils]: Spent 3.24 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:18:42,645 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:18:43,933 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:18:45,216 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:18:48,451 WARN L193 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:18:51,775 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:18:52,712 WARN L193 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2020-10-24 01:18:54,565 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 214 DAG size of output: 93 [2020-10-24 01:18:57,881 WARN L193 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:18:58,937 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 190 DAG size of output: 79 [2020-10-24 01:19:00,562 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 252 DAG size of output: 88 [2020-10-24 01:19:01,711 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 192 DAG size of output: 87 [2020-10-24 01:19:03,039 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 191 DAG size of output: 83 [2020-10-24 01:19:04,537 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 200 DAG size of output: 85 [2020-10-24 01:19:06,329 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 251 DAG size of output: 85 [2020-10-24 01:19:07,766 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 253 DAG size of output: 91 [2020-10-24 01:19:09,048 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 194 DAG size of output: 85 [2020-10-24 01:19:10,651 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 250 DAG size of output: 82 [2020-10-24 01:19:11,708 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 195 DAG size of output: 82 [2020-10-24 01:19:15,047 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:19:16,096 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 196 DAG size of output: 85 [2020-10-24 01:19:17,178 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 197 DAG size of output: 84 [2020-10-24 01:19:18,121 WARN L193 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 80 [2020-10-24 01:19:19,170 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 195 DAG size of output: 84 [2020-10-24 01:19:20,514 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 202 DAG size of output: 83 [2020-10-24 01:19:21,872 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-10-24 01:19:22,811 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 80 [2020-10-24 01:19:26,146 WARN L193 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:19:29,466 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:19:30,778 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:19:34,084 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:19:37,447 WARN L193 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:19:40,771 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:19:42,094 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:19:43,200 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 188 DAG size of output: 80 [2020-10-24 01:19:45,070 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 213 DAG size of output: 94 [2020-10-24 01:19:48,443 WARN L193 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:19:49,435 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 80 [2020-10-24 01:19:50,392 WARN L193 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2020-10-24 01:19:51,482 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 189 DAG size of output: 83 [2020-10-24 01:19:53,550 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 279 DAG size of output: 93 [2020-10-24 01:19:55,141 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 246 DAG size of output: 87 [2020-10-24 01:19:56,185 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 194 DAG size of output: 82 [2020-10-24 01:19:57,367 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 205 DAG size of output: 86 [2020-10-24 01:19:58,727 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 193 DAG size of output: 86 [2020-10-24 01:19:59,815 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 190 DAG size of output: 79 [2020-10-24 01:20:00,926 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 203 DAG size of output: 81 [2020-10-24 01:20:04,304 WARN L193 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:20:05,371 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 240 DAG size of output: 86 [2020-10-24 01:20:08,733 WARN L193 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:20:10,281 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 200 DAG size of output: 85 [2020-10-24 01:20:11,607 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:20:12,988 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-10-24 01:20:16,330 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:20:17,726 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 253 DAG size of output: 84 [2020-10-24 01:20:19,325 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 200 DAG size of output: 86 [2020-10-24 01:20:22,725 WARN L193 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:20:23,853 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 195 DAG size of output: 84 [2020-10-24 01:20:25,182 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 192 DAG size of output: 83 [2020-10-24 01:20:26,557 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 191 DAG size of output: 83 [2020-10-24 01:20:27,910 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 197 DAG size of output: 82 [2020-10-24 01:20:28,959 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 192 DAG size of output: 81 [2020-10-24 01:20:30,033 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 196 DAG size of output: 85 [2020-10-24 01:20:33,443 WARN L193 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:20:35,185 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 240 DAG size of output: 84 [2020-10-24 01:20:36,226 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 193 DAG size of output: 82 [2020-10-24 01:20:37,884 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 204 DAG size of output: 88 [2020-10-24 01:20:39,165 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 191 DAG size of output: 82 [2020-10-24 01:20:40,191 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 194 DAG size of output: 81 [2020-10-24 01:20:41,613 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 240 DAG size of output: 85 [2020-10-24 01:20:42,657 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 192 DAG size of output: 81 [2020-10-24 01:20:43,773 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 201 DAG size of output: 86 [2020-10-24 01:20:44,839 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 195 DAG size of output: 79 [2020-10-24 01:20:45,993 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 202 DAG size of output: 85 [2020-10-24 01:20:47,172 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 206 DAG size of output: 91 [2020-10-24 01:20:48,182 WARN L193 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 80 [2020-10-24 01:20:49,291 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 195 DAG size of output: 83 [2020-10-24 01:20:50,430 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 193 DAG size of output: 82 [2020-10-24 01:20:52,564 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 251 DAG size of output: 95 [2020-10-24 01:20:53,691 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 197 DAG size of output: 84 [2020-10-24 01:20:55,075 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-10-24 01:20:56,335 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 214 DAG size of output: 67 [2020-10-24 01:20:59,719 WARN L193 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:21:03,113 WARN L193 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:21:04,377 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 214 DAG size of output: 67 [2020-10-24 01:21:05,641 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 214 DAG size of output: 67 [2020-10-24 01:21:06,995 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:21:08,108 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 195 DAG size of output: 80 [2020-10-24 01:21:11,563 WARN L193 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:21:12,841 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 194 DAG size of output: 80 [2020-10-24 01:21:14,321 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 202 DAG size of output: 83 [2020-10-24 01:21:15,447 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 194 DAG size of output: 83 [2020-10-24 01:21:18,888 WARN L193 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:21:22,334 WARN L193 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:21:23,595 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 248 DAG size of output: 83 [2020-10-24 01:21:25,006 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 193 DAG size of output: 86 [2020-10-24 01:21:28,463 WARN L193 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:21:29,841 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:21:31,214 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:21:32,584 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:21:36,022 WARN L193 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:21:37,454 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-10-24 01:21:38,814 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:21:42,273 WARN L193 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:21:43,713 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:21:47,186 WARN L193 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:21:48,556 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:21:49,545 WARN L193 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 82 [2020-10-24 01:21:50,865 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 196 DAG size of output: 82 [2020-10-24 01:21:52,229 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 192 DAG size of output: 83 [2020-10-24 01:21:55,703 WARN L193 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:21:56,982 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 248 DAG size of output: 83 [2020-10-24 01:22:00,485 WARN L193 SmtUtils]: Spent 3.49 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:22:01,900 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 190 DAG size of output: 81 [2020-10-24 01:22:03,048 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 191 DAG size of output: 84 [2020-10-24 01:22:04,417 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 239 DAG size of output: 88 [2020-10-24 01:22:07,900 WARN L193 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:22:11,418 WARN L193 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:22:12,857 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 193 DAG size of output: 86 [2020-10-24 01:22:13,992 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 188 DAG size of output: 80 [2020-10-24 01:22:17,457 WARN L193 SmtUtils]: Spent 3.45 s on a formula simplification. DAG size of input: 326 DAG size of output: 102 [2020-10-24 01:22:18,897 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 242 DAG size of output: 86 [2020-10-24 01:22:20,242 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 214 DAG size of output: 67 [2020-10-24 01:22:21,340 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 192 DAG size of output: 83 [2020-10-24 01:22:23,061 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 260 DAG size of output: 85 [2020-10-24 01:22:24,216 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 199 DAG size of output: 86 [2020-10-24 01:22:25,382 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 192 DAG size of output: 82 [2020-10-24 01:22:28,896 WARN L193 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:22:32,445 WARN L193 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:22:33,574 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 196 DAG size of output: 84 [2020-10-24 01:22:34,787 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 208 DAG size of output: 85 [2020-10-24 01:22:36,251 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 193 DAG size of output: 86 [2020-10-24 01:22:37,424 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 188 DAG size of output: 83 [2020-10-24 01:22:38,514 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 190 DAG size of output: 79 [2020-10-24 01:22:39,904 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 194 DAG size of output: 85 [2020-10-24 01:22:41,309 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 249 DAG size of output: 83 [2020-10-24 01:22:42,407 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 194 DAG size of output: 80 [2020-10-24 01:22:43,535 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 193 DAG size of output: 80 [2020-10-24 01:22:44,681 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 196 DAG size of output: 85 [2020-10-24 01:22:45,834 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 190 DAG size of output: 79 [2020-10-24 01:22:47,096 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 198 DAG size of output: 89 [2020-10-24 01:22:50,859 WARN L193 SmtUtils]: Spent 3.75 s on a formula simplification. DAG size of input: 328 DAG size of output: 101 [2020-10-24 01:22:52,555 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 198 DAG size of output: 83 [2020-10-24 01:22:54,562 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 208 DAG size of output: 93 [2020-10-24 01:22:55,607 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 186 DAG size of output: 78 [2020-10-24 01:22:57,074 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 194 DAG size of output: 81