/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:45:41,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:45:41,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:45:41,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:45:41,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:45:41,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:45:41,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:45:41,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:45:41,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:45:41,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:45:41,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:45:41,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:45:41,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:45:41,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:45:41,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:45:41,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:45:41,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:45:41,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:45:41,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:45:41,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:45:41,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:45:41,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:45:41,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:45:41,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:45:41,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:45:41,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:45:41,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:45:41,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:45:41,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:45:41,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:45:41,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:45:41,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:45:41,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:45:41,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:45:41,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:45:41,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:45:41,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:45:41,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:45:41,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:45:41,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:45:41,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:45:41,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:45:41,619 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:45:41,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:45:41,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:45:41,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:45:41,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:45:41,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:45:41,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:45:41,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:45:41,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:45:41,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:45:41,624 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:45:41,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:45:41,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:45:41,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:45:41,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:45:41,625 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:45:41,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:45:41,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:45:41,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:45:41,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:45:41,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:45:41,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:45:41,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:45:42,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:45:42,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:45:42,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:45:42,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:45:42,084 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:45:42,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2020-11-07 00:45:42,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a2a225c9/aa5cc327cdce46bc92341ec1c3ef96ce/FLAG083f2dd76 [2020-11-07 00:45:42,861 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:45:42,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c [2020-11-07 00:45:42,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a2a225c9/aa5cc327cdce46bc92341ec1c3ef96ce/FLAG083f2dd76 [2020-11-07 00:45:43,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a2a225c9/aa5cc327cdce46bc92341ec1c3ef96ce [2020-11-07 00:45:43,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:45:43,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:45:43,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:45:43,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:45:43,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:45:43,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:45:43" (1/1) ... [2020-11-07 00:45:43,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d9a31b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:43, skipping insertion in model container [2020-11-07 00:45:43,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:45:43" (1/1) ... [2020-11-07 00:45:43,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:45:43,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:45:43,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:45:43,543 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:45:43,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:45:43,588 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:45:43,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:43 WrapperNode [2020-11-07 00:45:43,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:45:43,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:45:43,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:45:43,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:45:43,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:43" (1/1) ... [2020-11-07 00:45:43,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:43" (1/1) ... [2020-11-07 00:45:43,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:43" (1/1) ... [2020-11-07 00:45:43,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:43" (1/1) ... [2020-11-07 00:45:43,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:43" (1/1) ... [2020-11-07 00:45:43,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:43" (1/1) ... [2020-11-07 00:45:43,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:43" (1/1) ... [2020-11-07 00:45:43,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:45:43,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:45:43,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:45:43,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:45:43,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:45:43,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:45:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:45:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:45:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:45:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:45:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:45:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:45:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:45:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:45:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:45:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:45:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:45:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:45:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:45:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:45:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:45:44,278 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:45:44,278 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 00:45:44,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:45:44 BoogieIcfgContainer [2020-11-07 00:45:44,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:45:44,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:45:44,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:45:44,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:45:44,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:45:43" (1/3) ... [2020-11-07 00:45:44,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0e3004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:45:44, skipping insertion in model container [2020-11-07 00:45:44,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:43" (2/3) ... [2020-11-07 00:45:44,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0e3004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:45:44, skipping insertion in model container [2020-11-07 00:45:44,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:45:44" (3/3) ... [2020-11-07 00:45:44,291 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-11-07 00:45:44,309 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:45:44,313 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:45:44,327 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:45:44,354 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:45:44,354 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:45:44,354 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:45:44,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:45:44,355 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:45:44,355 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:45:44,355 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:45:44,355 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:45:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-11-07 00:45:44,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-07 00:45:44,389 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:44,391 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] [2020-11-07 00:45:44,391 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:44,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:44,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1388703679, now seen corresponding path program 1 times [2020-11-07 00:45:44,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:44,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750661162] [2020-11-07 00:45:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:44,494 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:44,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:44,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750661162] [2020-11-07 00:45:44,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:44,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:44,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495193993] [2020-11-07 00:45:44,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:44,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:44,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:44,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:44,899 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 4 states. [2020-11-07 00:45:45,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:45,416 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2020-11-07 00:45:45,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:45,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-11-07 00:45:45,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:45,433 INFO L225 Difference]: With dead ends: 269 [2020-11-07 00:45:45,433 INFO L226 Difference]: Without dead ends: 184 [2020-11-07 00:45:45,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-07 00:45:45,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2020-11-07 00:45:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-11-07 00:45:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 239 transitions. [2020-11-07 00:45:45,535 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 239 transitions. Word has length 82 [2020-11-07 00:45:45,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:45,536 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 239 transitions. [2020-11-07 00:45:45,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:45:45,537 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 239 transitions. [2020-11-07 00:45:45,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-07 00:45:45,540 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:45,540 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] [2020-11-07 00:45:45,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:45:45,541 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:45,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:45,542 INFO L82 PathProgramCache]: Analyzing trace with hash 477474984, now seen corresponding path program 1 times [2020-11-07 00:45:45,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:45,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189954352] [2020-11-07 00:45:45,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:45,546 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:45,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189954352] [2020-11-07 00:45:45,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:45,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:45,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823308311] [2020-11-07 00:45:45,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:45,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:45,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:45,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:45,677 INFO L87 Difference]: Start difference. First operand 183 states and 239 transitions. Second operand 4 states. [2020-11-07 00:45:46,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:46,067 INFO L93 Difference]: Finished difference Result 220 states and 293 transitions. [2020-11-07 00:45:46,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:46,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-11-07 00:45:46,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:46,071 INFO L225 Difference]: With dead ends: 220 [2020-11-07 00:45:46,071 INFO L226 Difference]: Without dead ends: 217 [2020-11-07 00:45:46,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:46,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-07 00:45:46,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 183. [2020-11-07 00:45:46,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-11-07 00:45:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 238 transitions. [2020-11-07 00:45:46,119 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 238 transitions. Word has length 83 [2020-11-07 00:45:46,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:46,121 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 238 transitions. [2020-11-07 00:45:46,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:45:46,123 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 238 transitions. [2020-11-07 00:45:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-07 00:45:46,130 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:46,130 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] [2020-11-07 00:45:46,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:45:46,131 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:46,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:46,134 INFO L82 PathProgramCache]: Analyzing trace with hash -92586482, now seen corresponding path program 1 times [2020-11-07 00:45:46,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:46,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300334644] [2020-11-07 00:45:46,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:46,142 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:46,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:46,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:46,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300334644] [2020-11-07 00:45:46,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:46,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:46,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380584032] [2020-11-07 00:45:46,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:46,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:46,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:46,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:46,254 INFO L87 Difference]: Start difference. First operand 183 states and 238 transitions. Second operand 4 states. [2020-11-07 00:45:46,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:46,600 INFO L93 Difference]: Finished difference Result 435 states and 599 transitions. [2020-11-07 00:45:46,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:46,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-11-07 00:45:46,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:46,604 INFO L225 Difference]: With dead ends: 435 [2020-11-07 00:45:46,604 INFO L226 Difference]: Without dead ends: 305 [2020-11-07 00:45:46,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-11-07 00:45:46,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304. [2020-11-07 00:45:46,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-11-07 00:45:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 409 transitions. [2020-11-07 00:45:46,664 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 409 transitions. Word has length 83 [2020-11-07 00:45:46,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:46,665 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 409 transitions. [2020-11-07 00:45:46,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:45:46,665 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 409 transitions. [2020-11-07 00:45:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-07 00:45:46,667 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:46,667 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] [2020-11-07 00:45:46,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:45:46,667 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:46,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:46,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1859268204, now seen corresponding path program 1 times [2020-11-07 00:45:46,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:46,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644495060] [2020-11-07 00:45:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:46,671 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:46,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:46,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644495060] [2020-11-07 00:45:46,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:46,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:46,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067967229] [2020-11-07 00:45:46,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:46,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:46,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:46,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:46,788 INFO L87 Difference]: Start difference. First operand 304 states and 409 transitions. Second operand 4 states. [2020-11-07 00:45:47,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:47,162 INFO L93 Difference]: Finished difference Result 370 states and 506 transitions. [2020-11-07 00:45:47,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:47,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-11-07 00:45:47,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:47,166 INFO L225 Difference]: With dead ends: 370 [2020-11-07 00:45:47,166 INFO L226 Difference]: Without dead ends: 367 [2020-11-07 00:45:47,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-11-07 00:45:47,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 304. [2020-11-07 00:45:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-11-07 00:45:47,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 407 transitions. [2020-11-07 00:45:47,220 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 407 transitions. Word has length 84 [2020-11-07 00:45:47,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:47,221 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 407 transitions. [2020-11-07 00:45:47,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:45:47,221 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 407 transitions. [2020-11-07 00:45:47,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-07 00:45:47,222 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:47,222 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] [2020-11-07 00:45:47,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:45:47,223 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:47,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1432352493, now seen corresponding path program 1 times [2020-11-07 00:45:47,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:47,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254654653] [2020-11-07 00:45:47,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:47,226 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:47,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:47,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254654653] [2020-11-07 00:45:47,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:47,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:47,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717730982] [2020-11-07 00:45:47,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:47,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:47,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:47,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:47,310 INFO L87 Difference]: Start difference. First operand 304 states and 407 transitions. Second operand 4 states. [2020-11-07 00:45:47,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:47,718 INFO L93 Difference]: Finished difference Result 792 states and 1098 transitions. [2020-11-07 00:45:47,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:47,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-11-07 00:45:47,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:47,722 INFO L225 Difference]: With dead ends: 792 [2020-11-07 00:45:47,723 INFO L226 Difference]: Without dead ends: 541 [2020-11-07 00:45:47,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-11-07 00:45:47,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 540. [2020-11-07 00:45:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-11-07 00:45:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 735 transitions. [2020-11-07 00:45:47,811 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 735 transitions. Word has length 84 [2020-11-07 00:45:47,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:47,812 INFO L481 AbstractCegarLoop]: Abstraction has 540 states and 735 transitions. [2020-11-07 00:45:47,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:45:47,812 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 735 transitions. [2020-11-07 00:45:47,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-07 00:45:47,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:47,813 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] [2020-11-07 00:45:47,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:45:47,814 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:47,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:47,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1745196596, now seen corresponding path program 1 times [2020-11-07 00:45:47,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:47,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360588660] [2020-11-07 00:45:47,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:47,817 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:47,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360588660] [2020-11-07 00:45:47,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:47,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:47,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063473826] [2020-11-07 00:45:47,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:47,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:47,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:47,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:47,919 INFO L87 Difference]: Start difference. First operand 540 states and 735 transitions. Second operand 4 states. [2020-11-07 00:45:48,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:48,394 INFO L93 Difference]: Finished difference Result 660 states and 910 transitions. [2020-11-07 00:45:48,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:48,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-11-07 00:45:48,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:48,406 INFO L225 Difference]: With dead ends: 660 [2020-11-07 00:45:48,406 INFO L226 Difference]: Without dead ends: 657 [2020-11-07 00:45:48,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-11-07 00:45:48,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 540. [2020-11-07 00:45:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-11-07 00:45:48,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 731 transitions. [2020-11-07 00:45:48,506 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 731 transitions. Word has length 85 [2020-11-07 00:45:48,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:48,507 INFO L481 AbstractCegarLoop]: Abstraction has 540 states and 731 transitions. [2020-11-07 00:45:48,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:45:48,507 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 731 transitions. [2020-11-07 00:45:48,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-07 00:45:48,508 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:48,509 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] [2020-11-07 00:45:48,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 00:45:48,509 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:48,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:48,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1460831994, now seen corresponding path program 1 times [2020-11-07 00:45:48,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:48,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201656148] [2020-11-07 00:45:48,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:48,514 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:48,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:48,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201656148] [2020-11-07 00:45:48,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:48,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:48,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236614243] [2020-11-07 00:45:48,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:48,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:48,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:48,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:48,636 INFO L87 Difference]: Start difference. First operand 540 states and 731 transitions. Second operand 4 states. [2020-11-07 00:45:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:49,105 INFO L93 Difference]: Finished difference Result 1488 states and 2054 transitions. [2020-11-07 00:45:49,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:49,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-11-07 00:45:49,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:49,111 INFO L225 Difference]: With dead ends: 1488 [2020-11-07 00:45:49,111 INFO L226 Difference]: Without dead ends: 1001 [2020-11-07 00:45:49,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:49,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-11-07 00:45:49,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1000. [2020-11-07 00:45:49,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-11-07 00:45:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1359 transitions. [2020-11-07 00:45:49,283 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1359 transitions. Word has length 85 [2020-11-07 00:45:49,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:49,284 INFO L481 AbstractCegarLoop]: Abstraction has 1000 states and 1359 transitions. [2020-11-07 00:45:49,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:45:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1359 transitions. [2020-11-07 00:45:49,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-07 00:45:49,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:49,286 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] [2020-11-07 00:45:49,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 00:45:49,286 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:49,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1791011720, now seen corresponding path program 1 times [2020-11-07 00:45:49,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:49,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009883893] [2020-11-07 00:45:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:49,291 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:49,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:49,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009883893] [2020-11-07 00:45:49,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:49,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:49,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187704949] [2020-11-07 00:45:49,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:49,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:49,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:49,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:49,398 INFO L87 Difference]: Start difference. First operand 1000 states and 1359 transitions. Second operand 4 states. [2020-11-07 00:45:49,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:49,919 INFO L93 Difference]: Finished difference Result 1220 states and 1674 transitions. [2020-11-07 00:45:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:49,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-07 00:45:49,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:49,927 INFO L225 Difference]: With dead ends: 1220 [2020-11-07 00:45:49,927 INFO L226 Difference]: Without dead ends: 1217 [2020-11-07 00:45:49,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:49,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2020-11-07 00:45:50,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1000. [2020-11-07 00:45:50,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-11-07 00:45:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1351 transitions. [2020-11-07 00:45:50,059 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1351 transitions. Word has length 86 [2020-11-07 00:45:50,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:50,060 INFO L481 AbstractCegarLoop]: Abstraction has 1000 states and 1351 transitions. [2020-11-07 00:45:50,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:45:50,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1351 transitions. [2020-11-07 00:45:50,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-07 00:45:50,062 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:50,062 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] [2020-11-07 00:45:50,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 00:45:50,063 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:50,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:50,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1951259239, now seen corresponding path program 1 times [2020-11-07 00:45:50,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:50,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768764255] [2020-11-07 00:45:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:50,066 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:50,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:50,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768764255] [2020-11-07 00:45:50,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:50,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:50,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162449603] [2020-11-07 00:45:50,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:50,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:50,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:50,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:50,158 INFO L87 Difference]: Start difference. First operand 1000 states and 1351 transitions. Second operand 4 states. [2020-11-07 00:45:50,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:50,807 INFO L93 Difference]: Finished difference Result 2844 states and 3882 transitions. [2020-11-07 00:45:50,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:50,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-07 00:45:50,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:50,818 INFO L225 Difference]: With dead ends: 2844 [2020-11-07 00:45:50,818 INFO L226 Difference]: Without dead ends: 1897 [2020-11-07 00:45:50,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:50,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2020-11-07 00:45:51,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1896. [2020-11-07 00:45:51,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2020-11-07 00:45:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2551 transitions. [2020-11-07 00:45:51,135 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2551 transitions. Word has length 86 [2020-11-07 00:45:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:51,136 INFO L481 AbstractCegarLoop]: Abstraction has 1896 states and 2551 transitions. [2020-11-07 00:45:51,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:45:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2551 transitions. [2020-11-07 00:45:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-07 00:45:51,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:51,139 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] [2020-11-07 00:45:51,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 00:45:51,139 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:51,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:51,140 INFO L82 PathProgramCache]: Analyzing trace with hash 255691712, now seen corresponding path program 1 times [2020-11-07 00:45:51,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:51,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483656632] [2020-11-07 00:45:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:51,142 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:51,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483656632] [2020-11-07 00:45:51,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:51,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:51,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034813484] [2020-11-07 00:45:51,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:51,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:51,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:51,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:51,210 INFO L87 Difference]: Start difference. First operand 1896 states and 2551 transitions. Second operand 4 states. [2020-11-07 00:45:51,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:51,873 INFO L93 Difference]: Finished difference Result 2300 states and 3114 transitions. [2020-11-07 00:45:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:51,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-07 00:45:51,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:51,886 INFO L225 Difference]: With dead ends: 2300 [2020-11-07 00:45:51,886 INFO L226 Difference]: Without dead ends: 2297 [2020-11-07 00:45:51,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:51,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-11-07 00:45:52,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1896. [2020-11-07 00:45:52,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2020-11-07 00:45:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2535 transitions. [2020-11-07 00:45:52,213 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2535 transitions. Word has length 87 [2020-11-07 00:45:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:52,213 INFO L481 AbstractCegarLoop]: Abstraction has 1896 states and 2535 transitions. [2020-11-07 00:45:52,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:45:52,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2535 transitions. [2020-11-07 00:45:52,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-07 00:45:52,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:52,216 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] [2020-11-07 00:45:52,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 00:45:52,216 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:52,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:52,217 INFO L82 PathProgramCache]: Analyzing trace with hash -351893530, now seen corresponding path program 1 times [2020-11-07 00:45:52,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:52,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836298726] [2020-11-07 00:45:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:52,220 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:52,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:52,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836298726] [2020-11-07 00:45:52,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:52,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:52,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125840358] [2020-11-07 00:45:52,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:52,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:52,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:52,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:52,282 INFO L87 Difference]: Start difference. First operand 1896 states and 2535 transitions. Second operand 4 states. [2020-11-07 00:45:53,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:53,168 INFO L93 Difference]: Finished difference Result 5484 states and 7370 transitions. [2020-11-07 00:45:53,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:53,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-07 00:45:53,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:53,187 INFO L225 Difference]: With dead ends: 5484 [2020-11-07 00:45:53,187 INFO L226 Difference]: Without dead ends: 3641 [2020-11-07 00:45:53,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2020-11-07 00:45:53,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3640. [2020-11-07 00:45:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3640 states. [2020-11-07 00:45:53,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 4823 transitions. [2020-11-07 00:45:53,716 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 4823 transitions. Word has length 87 [2020-11-07 00:45:53,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:53,716 INFO L481 AbstractCegarLoop]: Abstraction has 3640 states and 4823 transitions. [2020-11-07 00:45:53,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:45:53,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 4823 transitions. [2020-11-07 00:45:53,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-07 00:45:53,720 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:53,720 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] [2020-11-07 00:45:53,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 00:45:53,721 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:53,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:53,721 INFO L82 PathProgramCache]: Analyzing trace with hash -720999804, now seen corresponding path program 1 times [2020-11-07 00:45:53,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:53,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491793409] [2020-11-07 00:45:53,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:53,723 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:53,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:53,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491793409] [2020-11-07 00:45:53,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:53,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:53,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5845856] [2020-11-07 00:45:53,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:53,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:53,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:53,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:53,788 INFO L87 Difference]: Start difference. First operand 3640 states and 4823 transitions. Second operand 4 states. [2020-11-07 00:45:54,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:54,660 INFO L93 Difference]: Finished difference Result 4380 states and 5818 transitions. [2020-11-07 00:45:54,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:54,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-07 00:45:54,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:54,680 INFO L225 Difference]: With dead ends: 4380 [2020-11-07 00:45:54,680 INFO L226 Difference]: Without dead ends: 4377 [2020-11-07 00:45:54,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2020-11-07 00:45:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 3640. [2020-11-07 00:45:55,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3640 states. [2020-11-07 00:45:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 4791 transitions. [2020-11-07 00:45:55,104 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 4791 transitions. Word has length 88 [2020-11-07 00:45:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:55,104 INFO L481 AbstractCegarLoop]: Abstraction has 3640 states and 4791 transitions. [2020-11-07 00:45:55,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:45:55,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 4791 transitions. [2020-11-07 00:45:55,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-07 00:45:55,108 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:55,108 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] [2020-11-07 00:45:55,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 00:45:55,109 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:55,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:55,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1983814725, now seen corresponding path program 1 times [2020-11-07 00:45:55,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:55,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219229695] [2020-11-07 00:45:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:55,112 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:55,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:55,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219229695] [2020-11-07 00:45:55,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:55,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:55,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801844884] [2020-11-07 00:45:55,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:55,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:55,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:55,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:55,185 INFO L87 Difference]: Start difference. First operand 3640 states and 4791 transitions. Second operand 4 states. [2020-11-07 00:45:56,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:56,472 INFO L93 Difference]: Finished difference Result 10620 states and 14010 transitions. [2020-11-07 00:45:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:56,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-07 00:45:56,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:56,501 INFO L225 Difference]: With dead ends: 10620 [2020-11-07 00:45:56,501 INFO L226 Difference]: Without dead ends: 7033 [2020-11-07 00:45:56,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:56,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7033 states. [2020-11-07 00:45:57,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7033 to 7032. [2020-11-07 00:45:57,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7032 states. [2020-11-07 00:45:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7032 states to 7032 states and 9143 transitions. [2020-11-07 00:45:57,671 INFO L78 Accepts]: Start accepts. Automaton has 7032 states and 9143 transitions. Word has length 88 [2020-11-07 00:45:57,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:57,672 INFO L481 AbstractCegarLoop]: Abstraction has 7032 states and 9143 transitions. [2020-11-07 00:45:57,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:45:57,672 INFO L276 IsEmpty]: Start isEmpty. Operand 7032 states and 9143 transitions. [2020-11-07 00:45:57,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-07 00:45:57,678 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:57,679 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] [2020-11-07 00:45:57,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 00:45:57,679 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:57,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:57,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1376338130, now seen corresponding path program 1 times [2020-11-07 00:45:57,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:57,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809222803] [2020-11-07 00:45:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:57,682 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:57,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:57,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809222803] [2020-11-07 00:45:57,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:57,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:45:57,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475917849] [2020-11-07 00:45:57,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:45:57,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:57,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:45:57,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:45:57,751 INFO L87 Difference]: Start difference. First operand 7032 states and 9143 transitions. Second operand 4 states. [2020-11-07 00:45:59,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:59,624 INFO L93 Difference]: Finished difference Result 20604 states and 26810 transitions. [2020-11-07 00:45:59,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:45:59,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-11-07 00:45:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:59,670 INFO L225 Difference]: With dead ends: 20604 [2020-11-07 00:45:59,670 INFO L226 Difference]: Without dead ends: 13625 [2020-11-07 00:45:59,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:59,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13625 states. [2020-11-07 00:46:01,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13625 to 13624. [2020-11-07 00:46:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13624 states. [2020-11-07 00:46:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13624 states to 13624 states and 17463 transitions. [2020-11-07 00:46:01,322 INFO L78 Accepts]: Start accepts. Automaton has 13624 states and 17463 transitions. Word has length 89 [2020-11-07 00:46:01,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:01,322 INFO L481 AbstractCegarLoop]: Abstraction has 13624 states and 17463 transitions. [2020-11-07 00:46:01,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:46:01,323 INFO L276 IsEmpty]: Start isEmpty. Operand 13624 states and 17463 transitions. [2020-11-07 00:46:01,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-07 00:46:01,331 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:01,331 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] [2020-11-07 00:46:01,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 00:46:01,332 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:01,332 INFO L82 PathProgramCache]: Analyzing trace with hash -933654196, now seen corresponding path program 1 times [2020-11-07 00:46:01,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:01,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971539372] [2020-11-07 00:46:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:01,335 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:01,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:46:01,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971539372] [2020-11-07 00:46:01,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:01,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:46:01,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172326389] [2020-11-07 00:46:01,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:46:01,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:01,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:46:01,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:46:01,400 INFO L87 Difference]: Start difference. First operand 13624 states and 17463 transitions. Second operand 4 states. [2020-11-07 00:46:03,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:03,333 INFO L93 Difference]: Finished difference Result 16188 states and 20666 transitions. [2020-11-07 00:46:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:46:03,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-11-07 00:46:03,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:03,369 INFO L225 Difference]: With dead ends: 16188 [2020-11-07 00:46:03,369 INFO L226 Difference]: Without dead ends: 16185 [2020-11-07 00:46:03,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:46:03,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2020-11-07 00:46:05,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 13624. [2020-11-07 00:46:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13624 states. [2020-11-07 00:46:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13624 states to 13624 states and 17335 transitions. [2020-11-07 00:46:05,251 INFO L78 Accepts]: Start accepts. Automaton has 13624 states and 17335 transitions. Word has length 89 [2020-11-07 00:46:05,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:05,251 INFO L481 AbstractCegarLoop]: Abstraction has 13624 states and 17335 transitions. [2020-11-07 00:46:05,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:46:05,251 INFO L276 IsEmpty]: Start isEmpty. Operand 13624 states and 17335 transitions. [2020-11-07 00:46:05,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-07 00:46:05,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:05,261 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] [2020-11-07 00:46:05,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 00:46:05,261 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:05,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:05,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1064005776, now seen corresponding path program 1 times [2020-11-07 00:46:05,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:05,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614265913] [2020-11-07 00:46:05,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:05,264 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:46:05,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614265913] [2020-11-07 00:46:05,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:05,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:46:05,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307043045] [2020-11-07 00:46:05,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:46:05,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:05,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:46:05,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:46:05,353 INFO L87 Difference]: Start difference. First operand 13624 states and 17335 transitions. Second operand 4 states. [2020-11-07 00:46:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:07,480 INFO L93 Difference]: Finished difference Result 16060 states and 20282 transitions. [2020-11-07 00:46:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:46:07,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-11-07 00:46:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:07,526 INFO L225 Difference]: With dead ends: 16060 [2020-11-07 00:46:07,527 INFO L226 Difference]: Without dead ends: 16057 [2020-11-07 00:46:07,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:46:07,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16057 states. [2020-11-07 00:46:09,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16057 to 13624. [2020-11-07 00:46:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13624 states. [2020-11-07 00:46:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13624 states to 13624 states and 17207 transitions. [2020-11-07 00:46:09,463 INFO L78 Accepts]: Start accepts. Automaton has 13624 states and 17207 transitions. Word has length 90 [2020-11-07 00:46:09,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:09,464 INFO L481 AbstractCegarLoop]: Abstraction has 13624 states and 17207 transitions. [2020-11-07 00:46:09,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:46:09,464 INFO L276 IsEmpty]: Start isEmpty. Operand 13624 states and 17207 transitions. [2020-11-07 00:46:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-07 00:46:09,473 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:09,473 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] [2020-11-07 00:46:09,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 00:46:09,473 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:09,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:09,474 INFO L82 PathProgramCache]: Analyzing trace with hash -275555599, now seen corresponding path program 1 times [2020-11-07 00:46:09,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:09,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050760755] [2020-11-07 00:46:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:09,476 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:09,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:46:09,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050760755] [2020-11-07 00:46:09,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:09,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:46:09,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320022012] [2020-11-07 00:46:09,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:46:09,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:09,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:46:09,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:46:09,542 INFO L87 Difference]: Start difference. First operand 13624 states and 17207 transitions. Second operand 4 states. [2020-11-07 00:46:13,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:13,093 INFO L93 Difference]: Finished difference Result 39996 states and 50490 transitions. [2020-11-07 00:46:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:46:13,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-11-07 00:46:13,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:13,149 INFO L225 Difference]: With dead ends: 39996 [2020-11-07 00:46:13,149 INFO L226 Difference]: Without dead ends: 26425 [2020-11-07 00:46:13,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:46:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26425 states. [2020-11-07 00:46:16,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26425 to 26424. [2020-11-07 00:46:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26424 states. [2020-11-07 00:46:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26424 states to 26424 states and 32823 transitions. [2020-11-07 00:46:16,490 INFO L78 Accepts]: Start accepts. Automaton has 26424 states and 32823 transitions. Word has length 90 [2020-11-07 00:46:16,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:16,490 INFO L481 AbstractCegarLoop]: Abstraction has 26424 states and 32823 transitions. [2020-11-07 00:46:16,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:46:16,490 INFO L276 IsEmpty]: Start isEmpty. Operand 26424 states and 32823 transitions. [2020-11-07 00:46:16,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-07 00:46:16,500 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:16,500 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] [2020-11-07 00:46:16,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 00:46:16,500 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:16,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:16,501 INFO L82 PathProgramCache]: Analyzing trace with hash 55357886, now seen corresponding path program 1 times [2020-11-07 00:46:16,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:16,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12584012] [2020-11-07 00:46:16,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:16,503 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:16,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:46:16,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12584012] [2020-11-07 00:46:16,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:16,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:46:16,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866608970] [2020-11-07 00:46:16,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:46:16,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:16,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:46:16,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:46:16,574 INFO L87 Difference]: Start difference. First operand 26424 states and 32823 transitions. Second operand 4 states. [2020-11-07 00:46:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:22,964 INFO L93 Difference]: Finished difference Result 77628 states and 96314 transitions. [2020-11-07 00:46:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:46:22,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-11-07 00:46:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:23,028 INFO L225 Difference]: With dead ends: 77628 [2020-11-07 00:46:23,028 INFO L226 Difference]: Without dead ends: 39225 [2020-11-07 00:46:23,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:46:23,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39225 states. [2020-11-07 00:46:28,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39225 to 39224. [2020-11-07 00:46:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39224 states. [2020-11-07 00:46:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39224 states to 39224 states and 47415 transitions. [2020-11-07 00:46:28,246 INFO L78 Accepts]: Start accepts. Automaton has 39224 states and 47415 transitions. Word has length 91 [2020-11-07 00:46:28,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:28,247 INFO L481 AbstractCegarLoop]: Abstraction has 39224 states and 47415 transitions. [2020-11-07 00:46:28,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:46:28,247 INFO L276 IsEmpty]: Start isEmpty. Operand 39224 states and 47415 transitions. [2020-11-07 00:46:28,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-07 00:46:28,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:28,261 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] [2020-11-07 00:46:28,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-07 00:46:28,261 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:28,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:28,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1433033000, now seen corresponding path program 1 times [2020-11-07 00:46:28,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:28,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774199614] [2020-11-07 00:46:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:28,264 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:28,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:28,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:46:28,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774199614] [2020-11-07 00:46:28,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:28,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:46:28,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053226135] [2020-11-07 00:46:28,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:46:28,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:28,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:46:28,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:46:28,328 INFO L87 Difference]: Start difference. First operand 39224 states and 47415 transitions. Second operand 4 states. [2020-11-07 00:46:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:33,681 INFO L93 Difference]: Finished difference Result 43580 states and 52026 transitions. [2020-11-07 00:46:33,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:46:33,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-11-07 00:46:33,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:33,736 INFO L225 Difference]: With dead ends: 43580 [2020-11-07 00:46:33,736 INFO L226 Difference]: Without dead ends: 30777 [2020-11-07 00:46:33,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:46:33,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30777 states. [2020-11-07 00:46:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30777 to 26424. [2020-11-07 00:46:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26424 states. [2020-11-07 00:46:37,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26424 states to 26424 states and 31543 transitions. [2020-11-07 00:46:37,424 INFO L78 Accepts]: Start accepts. Automaton has 26424 states and 31543 transitions. Word has length 91 [2020-11-07 00:46:37,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:37,424 INFO L481 AbstractCegarLoop]: Abstraction has 26424 states and 31543 transitions. [2020-11-07 00:46:37,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:46:37,425 INFO L276 IsEmpty]: Start isEmpty. Operand 26424 states and 31543 transitions. [2020-11-07 00:46:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-07 00:46:37,434 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:37,434 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] [2020-11-07 00:46:37,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-07 00:46:37,435 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:37,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:37,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1531812196, now seen corresponding path program 1 times [2020-11-07 00:46:37,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:37,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053726512] [2020-11-07 00:46:37,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:37,443 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:37,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:46:37,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053726512] [2020-11-07 00:46:37,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:37,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:46:37,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550687601] [2020-11-07 00:46:37,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:46:37,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:37,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:46:37,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:46:37,523 INFO L87 Difference]: Start difference. First operand 26424 states and 31543 transitions. Second operand 4 states. [2020-11-07 00:46:40,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:40,676 INFO L93 Difference]: Finished difference Result 26424 states and 31543 transitions. [2020-11-07 00:46:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:46:40,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-11-07 00:46:40,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:40,677 INFO L225 Difference]: With dead ends: 26424 [2020-11-07 00:46:40,677 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 00:46:40,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:46:40,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 00:46:40,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 00:46:40,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 00:46:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 00:46:40,720 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2020-11-07 00:46:40,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:40,721 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 00:46:40,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:46:40,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 00:46:40,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 00:46:40,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-07 00:46:40,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 00:46:43,594 WARN L194 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 1085 DAG size of output: 65 [2020-11-07 00:46:49,616 WARN L194 SmtUtils]: Spent 6.00 s on a formula simplification. DAG size of input: 2619 DAG size of output: 31 [2020-11-07 00:46:50,113 WARN L194 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 31 [2020-11-07 00:46:52,568 WARN L194 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 1286 DAG size of output: 65 [2020-11-07 00:46:54,129 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 964 DAG size of output: 47 [2020-11-07 00:47:00,235 WARN L194 SmtUtils]: Spent 6.10 s on a formula simplification. DAG size of input: 2308 DAG size of output: 34 [2020-11-07 00:47:02,184 WARN L194 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 1089 DAG size of output: 121 [2020-11-07 00:47:02,492 WARN L194 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 45 [2020-11-07 00:47:10,168 WARN L194 SmtUtils]: Spent 7.67 s on a formula simplification. DAG size of input: 1100 DAG size of output: 581 [2020-11-07 00:47:11,376 WARN L194 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 592 DAG size of output: 191 [2020-11-07 00:47:11,973 WARN L194 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 87 [2020-11-07 00:47:17,957 WARN L194 SmtUtils]: Spent 5.97 s on a formula simplification. DAG size of input: 2793 DAG size of output: 31 [2020-11-07 00:47:22,302 WARN L194 SmtUtils]: Spent 4.34 s on a formula simplification. DAG size of input: 1093 DAG size of output: 321 [2020-11-07 00:47:22,693 WARN L194 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 65 [2020-11-07 00:47:26,882 WARN L194 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 1670 DAG size of output: 53 [2020-11-07 00:47:32,383 WARN L194 SmtUtils]: Spent 5.50 s on a formula simplification. DAG size of input: 1540 DAG size of output: 41 [2020-11-07 00:47:34,923 WARN L194 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 2233 DAG size of output: 31 [2020-11-07 00:47:49,485 WARN L194 SmtUtils]: Spent 14.55 s on a formula simplification that was a NOOP. DAG size: 1097 [2020-11-07 00:47:53,887 WARN L194 SmtUtils]: Spent 4.40 s on a formula simplification. DAG size of input: 1106 DAG size of output: 321 [2020-11-07 00:47:54,548 WARN L194 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 121 [2020-11-07 00:47:55,347 WARN L194 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 123 [2020-11-07 00:47:55,911 WARN L194 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 676 DAG size of output: 67 [2020-11-07 00:47:57,025 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 1079 DAG size of output: 39 [2020-11-07 00:48:04,406 WARN L194 SmtUtils]: Spent 7.37 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2020-11-07 00:48:05,420 WARN L194 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 1076 DAG size of output: 31 [2020-11-07 00:48:07,310 WARN L194 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 579 DAG size of output: 321 [2020-11-07 00:48:14,284 WARN L194 SmtUtils]: Spent 6.97 s on a formula simplification. DAG size of input: 2054 DAG size of output: 45 [2020-11-07 00:48:18,113 WARN L194 SmtUtils]: Spent 3.83 s on a formula simplification that was a NOOP. DAG size: 583 [2020-11-07 00:48:23,883 WARN L194 SmtUtils]: Spent 5.76 s on a formula simplification. DAG size of input: 2308 DAG size of output: 34 [2020-11-07 00:48:30,986 WARN L194 SmtUtils]: Spent 7.08 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2020-11-07 00:48:32,145 WARN L194 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 1083 DAG size of output: 53 [2020-11-07 00:48:37,391 WARN L194 SmtUtils]: Spent 5.24 s on a formula simplification. DAG size of input: 2767 DAG size of output: 31 [2020-11-07 00:48:40,087 WARN L194 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 1118 DAG size of output: 189 [2020-11-07 00:48:40,731 WARN L194 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 87 [2020-11-07 00:48:41,478 WARN L194 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 772 DAG size of output: 55 [2020-11-07 00:48:42,883 WARN L194 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1087 DAG size of output: 85 [2020-11-07 00:48:44,149 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1847 DAG size of output: 31 [2020-11-07 00:48:44,441 WARN L194 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 565 DAG size of output: 39 [2020-11-07 00:48:51,885 WARN L194 SmtUtils]: Spent 7.44 s on a formula simplification. DAG size of input: 2822 DAG size of output: 39 [2020-11-07 00:48:53,914 WARN L194 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 586 DAG size of output: 323 [2020-11-07 00:49:00,774 WARN L194 SmtUtils]: Spent 6.82 s on a formula simplification. DAG size of input: 2815 DAG size of output: 31 [2020-11-07 00:49:03,324 WARN L194 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 1091 DAG size of output: 189 [2020-11-07 00:49:03,665 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 53 [2020-11-07 00:49:05,716 WARN L194 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 1142 DAG size of output: 121 [2020-11-07 00:49:06,310 WARN L194 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 676 DAG size of output: 67 [2020-11-07 00:49:07,736 WARN L194 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 964 DAG size of output: 47 [2020-11-07 00:49:12,639 WARN L194 SmtUtils]: Spent 4.89 s on a formula simplification. DAG size of input: 2717 DAG size of output: 31 [2020-11-07 00:49:20,264 WARN L194 SmtUtils]: Spent 7.62 s on a formula simplification. DAG size of input: 1095 DAG size of output: 581 [2020-11-07 00:49:20,767 WARN L194 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 573 DAG size of output: 85 [2020-11-07 00:49:24,704 WARN L194 SmtUtils]: Spent 3.93 s on a formula simplification that was a NOOP. DAG size: 583 [2020-11-07 00:49:32,124 WARN L194 SmtUtils]: Spent 7.41 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2020-11-07 00:49:33,315 WARN L194 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 592 DAG size of output: 191 [2020-11-07 00:49:40,789 WARN L194 SmtUtils]: Spent 7.46 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2020-11-07 00:49:48,342 WARN L194 SmtUtils]: Spent 7.54 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2020-11-07 00:49:55,920 WARN L194 SmtUtils]: Spent 7.57 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2020-11-07 00:49:56,963 WARN L194 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 1076 DAG size of output: 31 [2020-11-07 00:49:58,019 WARN L194 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 577 DAG size of output: 189 [2020-11-07 00:49:59,753 WARN L194 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 1190 DAG size of output: 85 [2020-11-07 00:50:00,574 WARN L194 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 772 DAG size of output: 55 [2020-11-07 00:50:06,192 WARN L194 SmtUtils]: Spent 5.61 s on a formula simplification. DAG size of input: 1540 DAG size of output: 41 [2020-11-07 00:50:07,310 WARN L194 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 1081 DAG size of output: 45 [2020-11-07 00:50:13,754 WARN L194 SmtUtils]: Spent 6.43 s on a formula simplification. DAG size of input: 2807 DAG size of output: 31 [2020-11-07 00:50:17,590 WARN L194 SmtUtils]: Spent 3.83 s on a formula simplification that was a NOOP. DAG size: 581 [2020-11-07 00:50:19,670 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 586 DAG size of output: 323 [2020-11-07 00:50:20,490 WARN L194 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 123 [2020-11-07 00:50:21,151 WARN L194 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-11-07 00:50:21,746 WARN L194 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-11-07 00:50:21,894 WARN L194 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2020-11-07 00:50:25,287 WARN L194 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2020-11-07 00:50:25,409 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15 [2020-11-07 00:51:45,470 WARN L194 SmtUtils]: Spent 1.33 m on a formula simplification. DAG size of input: 571 DAG size of output: 551 [2020-11-07 00:51:55,304 WARN L194 SmtUtils]: Spent 9.82 s on a formula simplification. DAG size of input: 181 DAG size of output: 161 [2020-11-07 00:51:56,839 WARN L194 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-11-07 00:52:22,193 WARN L194 SmtUtils]: Spent 25.33 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2020-11-07 00:52:22,819 WARN L194 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-11-07 00:52:23,084 WARN L194 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2020-11-07 00:57:04,449 WARN L194 SmtUtils]: Spent 4.69 m on a formula simplification. DAG size of input: 1087 DAG size of output: 1067 [2020-11-07 00:57:30,829 WARN L194 SmtUtils]: Spent 26.37 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2020-11-07 00:57:34,348 WARN L194 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2020-11-07 00:57:38,267 WARN L194 SmtUtils]: Spent 3.91 s on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2020-11-07 00:57:38,966 WARN L194 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-11-07 00:58:04,145 WARN L194 SmtUtils]: Spent 25.10 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2020-11-07 00:58:04,261 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15