/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:17:01,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:17:01,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:17:01,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:17:01,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:17:01,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:17:01,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:17:01,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:17:01,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:17:01,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:17:01,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:17:01,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:17:01,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:17:01,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:17:01,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:17:01,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:17:01,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:17:01,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:17:01,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:17:01,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:17:01,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:17:01,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:17:01,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:17:01,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:17:01,511 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:17:01,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:17:01,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:17:01,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:17:01,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:17:01,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:17:01,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:17:01,513 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:17:01,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:17:01,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:17:01,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:17:01,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:17:01,514 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:17:01,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:17:01,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:17:01,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:17:01,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:17:01,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:17:01,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:17:01,516 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:17:01,516 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:17:01,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:17:01,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:17:01,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:17:01,930 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:17:01,934 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:17:01,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2021-02-24 04:17:02,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/316121270/a5ac82eb0f094eb596799aded79ce732/FLAG33b432d3c [2021-02-24 04:17:02,766 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:17:02,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c [2021-02-24 04:17:02,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/316121270/a5ac82eb0f094eb596799aded79ce732/FLAG33b432d3c [2021-02-24 04:17:03,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/316121270/a5ac82eb0f094eb596799aded79ce732 [2021-02-24 04:17:03,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:17:03,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:17:03,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:17:03,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:17:03,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:17:03,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:17:03" (1/1) ... [2021-02-24 04:17:03,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5f3b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:03, skipping insertion in model container [2021-02-24 04:17:03,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:17:03" (1/1) ... [2021-02-24 04:17:03,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:17:03,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:17:03,447 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c[3901,3914] [2021-02-24 04:17:03,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:17:03,463 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:17:03,499 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c[3901,3914] [2021-02-24 04:17:03,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:17:03,526 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:17:03,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:03 WrapperNode [2021-02-24 04:17:03,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:17:03,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:17:03,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:17:03,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:17:03,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:03" (1/1) ... [2021-02-24 04:17:03,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:03" (1/1) ... [2021-02-24 04:17:03,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:03" (1/1) ... [2021-02-24 04:17:03,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:03" (1/1) ... [2021-02-24 04:17:03,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:03" (1/1) ... [2021-02-24 04:17:03,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:03" (1/1) ... [2021-02-24 04:17:03,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:03" (1/1) ... [2021-02-24 04:17:03,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:17:03,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:17:03,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:17:03,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:17:03,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:17:03,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:17:03,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:17:03,748 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:17:03,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:17:03,749 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:17:03,749 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:17:03,749 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:17:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:17:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:17:03,751 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:17:03,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:17:03,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:17:03,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:17:03,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:17:03,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:17:03,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:17:04,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:17:04,503 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 04:17:04,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:17:04 BoogieIcfgContainer [2021-02-24 04:17:04,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:17:04,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:17:04,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:17:04,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:17:04,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:17:03" (1/3) ... [2021-02-24 04:17:04,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c613ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:17:04, skipping insertion in model container [2021-02-24 04:17:04,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:03" (2/3) ... [2021-02-24 04:17:04,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c613ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:17:04, skipping insertion in model container [2021-02-24 04:17:04,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:17:04" (3/3) ... [2021-02-24 04:17:04,523 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2021-02-24 04:17:04,530 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:17:04,536 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:17:04,554 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:17:04,576 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:17:04,576 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:17:04,576 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:17:04,576 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:17:04,577 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:17:04,577 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:17:04,577 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:17:04,577 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:17:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2021-02-24 04:17:04,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-02-24 04:17:04,610 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:04,611 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] [2021-02-24 04:17:04,612 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:04,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:04,619 INFO L82 PathProgramCache]: Analyzing trace with hash -410987913, now seen corresponding path program 1 times [2021-02-24 04:17:04,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:04,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12198375] [2021-02-24 04:17:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:04,728 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:05,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:05,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:05,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:05,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:05,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:05,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:05,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:05,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:05,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:05,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12198375] [2021-02-24 04:17:05,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:05,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:05,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638690769] [2021-02-24 04:17:05,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:05,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:05,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:05,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:05,155 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 4 states. [2021-02-24 04:17:05,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:05,795 INFO L93 Difference]: Finished difference Result 266 states and 362 transitions. [2021-02-24 04:17:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:05,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2021-02-24 04:17:05,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:05,820 INFO L225 Difference]: With dead ends: 266 [2021-02-24 04:17:05,821 INFO L226 Difference]: Without dead ends: 184 [2021-02-24 04:17:05,827 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 [2021-02-24 04:17:05,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-02-24 04:17:05,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2021-02-24 04:17:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-02-24 04:17:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 238 transitions. [2021-02-24 04:17:05,951 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 238 transitions. Word has length 81 [2021-02-24 04:17:05,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:05,952 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 238 transitions. [2021-02-24 04:17:05,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 238 transitions. [2021-02-24 04:17:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-02-24 04:17:05,956 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:05,956 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] [2021-02-24 04:17:05,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:17:05,957 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:05,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:05,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1499658385, now seen corresponding path program 1 times [2021-02-24 04:17:05,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:05,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679685949] [2021-02-24 04:17:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:05,962 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:06,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:06,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:06,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:06,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:06,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:06,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:06,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679685949] [2021-02-24 04:17:06,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:06,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:06,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845257130] [2021-02-24 04:17:06,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:06,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:06,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:06,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:06,163 INFO L87 Difference]: Start difference. First operand 182 states and 238 transitions. Second operand 4 states. [2021-02-24 04:17:06,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:06,464 INFO L93 Difference]: Finished difference Result 219 states and 291 transitions. [2021-02-24 04:17:06,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:06,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2021-02-24 04:17:06,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:06,468 INFO L225 Difference]: With dead ends: 219 [2021-02-24 04:17:06,468 INFO L226 Difference]: Without dead ends: 217 [2021-02-24 04:17:06,469 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 [2021-02-24 04:17:06,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-02-24 04:17:06,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 182. [2021-02-24 04:17:06,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-02-24 04:17:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 237 transitions. [2021-02-24 04:17:06,533 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 237 transitions. Word has length 82 [2021-02-24 04:17:06,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:06,535 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 237 transitions. [2021-02-24 04:17:06,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:06,536 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 237 transitions. [2021-02-24 04:17:06,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-02-24 04:17:06,544 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:06,544 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] [2021-02-24 04:17:06,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:17:06,546 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:06,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:06,550 INFO L82 PathProgramCache]: Analyzing trace with hash 144520521, now seen corresponding path program 1 times [2021-02-24 04:17:06,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:06,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454281784] [2021-02-24 04:17:06,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:06,555 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:06,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:06,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:06,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:06,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:06,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:06,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454281784] [2021-02-24 04:17:06,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:06,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:06,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918943252] [2021-02-24 04:17:06,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:06,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:06,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:06,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:06,691 INFO L87 Difference]: Start difference. First operand 182 states and 237 transitions. Second operand 4 states. [2021-02-24 04:17:07,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:07,006 INFO L93 Difference]: Finished difference Result 434 states and 597 transitions. [2021-02-24 04:17:07,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:07,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2021-02-24 04:17:07,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:07,009 INFO L225 Difference]: With dead ends: 434 [2021-02-24 04:17:07,009 INFO L226 Difference]: Without dead ends: 305 [2021-02-24 04:17:07,011 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 [2021-02-24 04:17:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-02-24 04:17:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 303. [2021-02-24 04:17:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2021-02-24 04:17:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 408 transitions. [2021-02-24 04:17:07,063 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 408 transitions. Word has length 82 [2021-02-24 04:17:07,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:07,064 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 408 transitions. [2021-02-24 04:17:07,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:07,064 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 408 transitions. [2021-02-24 04:17:07,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-24 04:17:07,066 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:07,066 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] [2021-02-24 04:17:07,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:17:07,066 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:07,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:07,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1463383348, now seen corresponding path program 1 times [2021-02-24 04:17:07,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:07,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376812243] [2021-02-24 04:17:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:07,070 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:07,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:07,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:07,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:07,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:07,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:07,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:07,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:07,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:07,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:07,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376812243] [2021-02-24 04:17:07,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:07,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:07,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281079751] [2021-02-24 04:17:07,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:07,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:07,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:07,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:07,169 INFO L87 Difference]: Start difference. First operand 303 states and 408 transitions. Second operand 4 states. [2021-02-24 04:17:07,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:07,478 INFO L93 Difference]: Finished difference Result 369 states and 504 transitions. [2021-02-24 04:17:07,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:07,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-02-24 04:17:07,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:07,483 INFO L225 Difference]: With dead ends: 369 [2021-02-24 04:17:07,483 INFO L226 Difference]: Without dead ends: 367 [2021-02-24 04:17:07,484 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 [2021-02-24 04:17:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-02-24 04:17:07,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 303. [2021-02-24 04:17:07,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2021-02-24 04:17:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 406 transitions. [2021-02-24 04:17:07,546 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 406 transitions. Word has length 83 [2021-02-24 04:17:07,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:07,546 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 406 transitions. [2021-02-24 04:17:07,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:07,547 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 406 transitions. [2021-02-24 04:17:07,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-24 04:17:07,548 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:07,548 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] [2021-02-24 04:17:07,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:17:07,548 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:07,549 INFO L82 PathProgramCache]: Analyzing trace with hash 185413163, now seen corresponding path program 1 times [2021-02-24 04:17:07,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:07,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855331711] [2021-02-24 04:17:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:07,552 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:07,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:07,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:07,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:07,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:07,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:07,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:07,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:07,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:07,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:07,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855331711] [2021-02-24 04:17:07,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:07,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:07,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837120948] [2021-02-24 04:17:07,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:07,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:07,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:07,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:07,656 INFO L87 Difference]: Start difference. First operand 303 states and 406 transitions. Second operand 4 states. [2021-02-24 04:17:07,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:07,997 INFO L93 Difference]: Finished difference Result 791 states and 1096 transitions. [2021-02-24 04:17:08,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:08,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-02-24 04:17:08,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:08,005 INFO L225 Difference]: With dead ends: 791 [2021-02-24 04:17:08,005 INFO L226 Difference]: Without dead ends: 541 [2021-02-24 04:17:08,016 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 [2021-02-24 04:17:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-02-24 04:17:08,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2021-02-24 04:17:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2021-02-24 04:17:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 734 transitions. [2021-02-24 04:17:08,142 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 734 transitions. Word has length 83 [2021-02-24 04:17:08,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:08,143 INFO L480 AbstractCegarLoop]: Abstraction has 539 states and 734 transitions. [2021-02-24 04:17:08,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 734 transitions. [2021-02-24 04:17:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-24 04:17:08,150 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:08,151 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] [2021-02-24 04:17:08,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:17:08,152 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:08,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:08,152 INFO L82 PathProgramCache]: Analyzing trace with hash -338856829, now seen corresponding path program 1 times [2021-02-24 04:17:08,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:08,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878500560] [2021-02-24 04:17:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:08,155 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:08,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:08,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:08,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:08,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:08,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:08,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:08,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:08,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:08,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:08,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878500560] [2021-02-24 04:17:08,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:08,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:08,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522011455] [2021-02-24 04:17:08,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:08,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:08,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:08,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:08,270 INFO L87 Difference]: Start difference. First operand 539 states and 734 transitions. Second operand 4 states. [2021-02-24 04:17:08,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:08,731 INFO L93 Difference]: Finished difference Result 659 states and 908 transitions. [2021-02-24 04:17:08,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:08,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2021-02-24 04:17:08,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:08,737 INFO L225 Difference]: With dead ends: 659 [2021-02-24 04:17:08,737 INFO L226 Difference]: Without dead ends: 657 [2021-02-24 04:17:08,738 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 [2021-02-24 04:17:08,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-02-24 04:17:08,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 539. [2021-02-24 04:17:08,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2021-02-24 04:17:08,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 730 transitions. [2021-02-24 04:17:08,852 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 730 transitions. Word has length 84 [2021-02-24 04:17:08,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:08,853 INFO L480 AbstractCegarLoop]: Abstraction has 539 states and 730 transitions. [2021-02-24 04:17:08,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 730 transitions. [2021-02-24 04:17:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-24 04:17:08,854 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:08,855 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] [2021-02-24 04:17:08,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:17:08,855 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:08,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:08,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1453085437, now seen corresponding path program 1 times [2021-02-24 04:17:08,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:08,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389284319] [2021-02-24 04:17:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:08,858 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:08,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:08,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:08,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:08,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:08,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:08,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:08,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:08,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:08,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:08,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389284319] [2021-02-24 04:17:08,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:08,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:08,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294983639] [2021-02-24 04:17:08,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:08,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:08,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:08,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:08,932 INFO L87 Difference]: Start difference. First operand 539 states and 730 transitions. Second operand 4 states. [2021-02-24 04:17:09,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:09,384 INFO L93 Difference]: Finished difference Result 1487 states and 2052 transitions. [2021-02-24 04:17:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:09,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2021-02-24 04:17:09,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:09,394 INFO L225 Difference]: With dead ends: 1487 [2021-02-24 04:17:09,394 INFO L226 Difference]: Without dead ends: 1001 [2021-02-24 04:17:09,395 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 [2021-02-24 04:17:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2021-02-24 04:17:09,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 999. [2021-02-24 04:17:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2021-02-24 04:17:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1358 transitions. [2021-02-24 04:17:09,559 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1358 transitions. Word has length 84 [2021-02-24 04:17:09,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:09,559 INFO L480 AbstractCegarLoop]: Abstraction has 999 states and 1358 transitions. [2021-02-24 04:17:09,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:09,560 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1358 transitions. [2021-02-24 04:17:09,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-02-24 04:17:09,561 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:09,561 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] [2021-02-24 04:17:09,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 04:17:09,562 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:09,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:09,562 INFO L82 PathProgramCache]: Analyzing trace with hash 161727264, now seen corresponding path program 1 times [2021-02-24 04:17:09,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:09,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381306770] [2021-02-24 04:17:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:09,566 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:09,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:09,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:09,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:09,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:09,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:09,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:09,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:09,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:09,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:09,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381306770] [2021-02-24 04:17:09,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:09,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:09,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907516689] [2021-02-24 04:17:09,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:09,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:09,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:09,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:09,645 INFO L87 Difference]: Start difference. First operand 999 states and 1358 transitions. Second operand 4 states. [2021-02-24 04:17:10,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:10,108 INFO L93 Difference]: Finished difference Result 1219 states and 1672 transitions. [2021-02-24 04:17:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:10,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2021-02-24 04:17:10,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:10,115 INFO L225 Difference]: With dead ends: 1219 [2021-02-24 04:17:10,115 INFO L226 Difference]: Without dead ends: 1217 [2021-02-24 04:17:10,116 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 [2021-02-24 04:17:10,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-02-24 04:17:10,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 999. [2021-02-24 04:17:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2021-02-24 04:17:10,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1350 transitions. [2021-02-24 04:17:10,318 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1350 transitions. Word has length 85 [2021-02-24 04:17:10,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:10,318 INFO L480 AbstractCegarLoop]: Abstraction has 999 states and 1350 transitions. [2021-02-24 04:17:10,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1350 transitions. [2021-02-24 04:17:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-02-24 04:17:10,321 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:10,321 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] [2021-02-24 04:17:10,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:17:10,321 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:10,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:10,322 INFO L82 PathProgramCache]: Analyzing trace with hash 2096220639, now seen corresponding path program 1 times [2021-02-24 04:17:10,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:10,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471609335] [2021-02-24 04:17:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:10,325 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:10,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:10,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:10,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:10,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:10,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:10,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:10,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:10,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:10,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:10,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471609335] [2021-02-24 04:17:10,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:10,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:10,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891294676] [2021-02-24 04:17:10,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:10,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:10,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:10,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:10,400 INFO L87 Difference]: Start difference. First operand 999 states and 1350 transitions. Second operand 4 states. [2021-02-24 04:17:10,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:10,958 INFO L93 Difference]: Finished difference Result 2843 states and 3880 transitions. [2021-02-24 04:17:10,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:10,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2021-02-24 04:17:10,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:10,973 INFO L225 Difference]: With dead ends: 2843 [2021-02-24 04:17:10,973 INFO L226 Difference]: Without dead ends: 1897 [2021-02-24 04:17:10,976 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 [2021-02-24 04:17:10,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2021-02-24 04:17:11,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1895. [2021-02-24 04:17:11,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2021-02-24 04:17:11,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2550 transitions. [2021-02-24 04:17:11,238 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2550 transitions. Word has length 85 [2021-02-24 04:17:11,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:11,238 INFO L480 AbstractCegarLoop]: Abstraction has 1895 states and 2550 transitions. [2021-02-24 04:17:11,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:11,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2550 transitions. [2021-02-24 04:17:11,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-24 04:17:11,241 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:11,241 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] [2021-02-24 04:17:11,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 04:17:11,242 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:11,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:11,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1500034665, now seen corresponding path program 1 times [2021-02-24 04:17:11,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:11,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364260927] [2021-02-24 04:17:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:11,245 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:11,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:11,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:11,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:11,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:11,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:11,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:11,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:11,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:11,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364260927] [2021-02-24 04:17:11,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:11,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:11,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265547852] [2021-02-24 04:17:11,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:11,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:11,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:11,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:11,313 INFO L87 Difference]: Start difference. First operand 1895 states and 2550 transitions. Second operand 4 states. [2021-02-24 04:17:12,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:12,028 INFO L93 Difference]: Finished difference Result 2299 states and 3112 transitions. [2021-02-24 04:17:12,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:12,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-02-24 04:17:12,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:12,040 INFO L225 Difference]: With dead ends: 2299 [2021-02-24 04:17:12,041 INFO L226 Difference]: Without dead ends: 2297 [2021-02-24 04:17:12,042 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 [2021-02-24 04:17:12,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2021-02-24 04:17:12,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1895. [2021-02-24 04:17:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2021-02-24 04:17:12,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2534 transitions. [2021-02-24 04:17:12,391 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2534 transitions. Word has length 86 [2021-02-24 04:17:12,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:12,391 INFO L480 AbstractCegarLoop]: Abstraction has 1895 states and 2534 transitions. [2021-02-24 04:17:12,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:12,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2534 transitions. [2021-02-24 04:17:12,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-24 04:17:12,395 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:12,395 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] [2021-02-24 04:17:12,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 04:17:12,395 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:12,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:12,396 INFO L82 PathProgramCache]: Analyzing trace with hash 558575793, now seen corresponding path program 1 times [2021-02-24 04:17:12,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:12,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407949050] [2021-02-24 04:17:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:12,398 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:12,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:12,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:12,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:12,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:12,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:12,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:12,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:12,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:12,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:12,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407949050] [2021-02-24 04:17:12,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:12,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:12,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905657927] [2021-02-24 04:17:12,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:12,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:12,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:12,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:12,463 INFO L87 Difference]: Start difference. First operand 1895 states and 2534 transitions. Second operand 4 states. [2021-02-24 04:17:13,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:13,345 INFO L93 Difference]: Finished difference Result 5483 states and 7368 transitions. [2021-02-24 04:17:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:13,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-02-24 04:17:13,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:13,364 INFO L225 Difference]: With dead ends: 5483 [2021-02-24 04:17:13,364 INFO L226 Difference]: Without dead ends: 3641 [2021-02-24 04:17:13,369 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 [2021-02-24 04:17:13,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2021-02-24 04:17:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3639. [2021-02-24 04:17:13,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2021-02-24 04:17:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 4822 transitions. [2021-02-24 04:17:13,957 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 4822 transitions. Word has length 86 [2021-02-24 04:17:13,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:13,958 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 4822 transitions. [2021-02-24 04:17:13,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:13,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 4822 transitions. [2021-02-24 04:17:13,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-24 04:17:13,962 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:13,962 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] [2021-02-24 04:17:13,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 04:17:13,963 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:13,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:13,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1475046540, now seen corresponding path program 1 times [2021-02-24 04:17:13,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:13,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880383677] [2021-02-24 04:17:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:13,966 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:13,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:13,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:13,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:13,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:13,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:13,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:14,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:14,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:14,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:14,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880383677] [2021-02-24 04:17:14,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:14,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:14,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619231372] [2021-02-24 04:17:14,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:14,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:14,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:14,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:14,033 INFO L87 Difference]: Start difference. First operand 3639 states and 4822 transitions. Second operand 4 states. [2021-02-24 04:17:15,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:15,304 INFO L93 Difference]: Finished difference Result 4379 states and 5816 transitions. [2021-02-24 04:17:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:15,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2021-02-24 04:17:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:15,328 INFO L225 Difference]: With dead ends: 4379 [2021-02-24 04:17:15,328 INFO L226 Difference]: Without dead ends: 4377 [2021-02-24 04:17:15,330 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 [2021-02-24 04:17:15,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2021-02-24 04:17:15,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 3639. [2021-02-24 04:17:15,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2021-02-24 04:17:15,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 4790 transitions. [2021-02-24 04:17:15,818 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 4790 transitions. Word has length 87 [2021-02-24 04:17:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:15,819 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 4790 transitions. [2021-02-24 04:17:15,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:15,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 4790 transitions. [2021-02-24 04:17:15,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-24 04:17:15,823 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:15,823 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] [2021-02-24 04:17:15,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 04:17:15,823 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:15,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:15,824 INFO L82 PathProgramCache]: Analyzing trace with hash 136226195, now seen corresponding path program 1 times [2021-02-24 04:17:15,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:15,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557088069] [2021-02-24 04:17:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:15,826 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:15,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:15,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:15,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:15,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:15,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:15,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557088069] [2021-02-24 04:17:15,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:15,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:15,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516760410] [2021-02-24 04:17:15,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:15,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:15,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:15,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:15,886 INFO L87 Difference]: Start difference. First operand 3639 states and 4790 transitions. Second operand 4 states. [2021-02-24 04:17:17,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:17,150 INFO L93 Difference]: Finished difference Result 10619 states and 14008 transitions. [2021-02-24 04:17:17,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:17,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2021-02-24 04:17:17,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:17,183 INFO L225 Difference]: With dead ends: 10619 [2021-02-24 04:17:17,184 INFO L226 Difference]: Without dead ends: 7033 [2021-02-24 04:17:17,194 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 [2021-02-24 04:17:17,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7033 states. [2021-02-24 04:17:18,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7033 to 7031. [2021-02-24 04:17:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7031 states. [2021-02-24 04:17:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7031 states to 7031 states and 9142 transitions. [2021-02-24 04:17:18,137 INFO L78 Accepts]: Start accepts. Automaton has 7031 states and 9142 transitions. Word has length 87 [2021-02-24 04:17:18,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:18,137 INFO L480 AbstractCegarLoop]: Abstraction has 7031 states and 9142 transitions. [2021-02-24 04:17:18,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 7031 states and 9142 transitions. [2021-02-24 04:17:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-24 04:17:18,145 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:18,145 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] [2021-02-24 04:17:18,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-24 04:17:18,145 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:18,146 INFO L82 PathProgramCache]: Analyzing trace with hash -71709083, now seen corresponding path program 1 times [2021-02-24 04:17:18,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:18,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749821881] [2021-02-24 04:17:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:18,152 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:18,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:18,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:18,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:18,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:18,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:18,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:18,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:18,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:18,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:18,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749821881] [2021-02-24 04:17:18,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:18,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:18,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048437684] [2021-02-24 04:17:18,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:18,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:18,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:18,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:18,223 INFO L87 Difference]: Start difference. First operand 7031 states and 9142 transitions. Second operand 4 states. [2021-02-24 04:17:19,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:19,996 INFO L93 Difference]: Finished difference Result 20603 states and 26808 transitions. [2021-02-24 04:17:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:19,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2021-02-24 04:17:19,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:20,058 INFO L225 Difference]: With dead ends: 20603 [2021-02-24 04:17:20,058 INFO L226 Difference]: Without dead ends: 13625 [2021-02-24 04:17:20,078 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 [2021-02-24 04:17:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13625 states. [2021-02-24 04:17:21,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13625 to 13623. [2021-02-24 04:17:21,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13623 states. [2021-02-24 04:17:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 17462 transitions. [2021-02-24 04:17:21,987 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 17462 transitions. Word has length 88 [2021-02-24 04:17:21,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:21,987 INFO L480 AbstractCegarLoop]: Abstraction has 13623 states and 17462 transitions. [2021-02-24 04:17:21,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:21,988 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 17462 transitions. [2021-02-24 04:17:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-24 04:17:21,998 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:21,998 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] [2021-02-24 04:17:21,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-24 04:17:21,999 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:21,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:21,999 INFO L82 PathProgramCache]: Analyzing trace with hash -700414293, now seen corresponding path program 1 times [2021-02-24 04:17:22,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:22,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796957535] [2021-02-24 04:17:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:22,002 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:22,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:22,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:22,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:22,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:22,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:22,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:22,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:22,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:22,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796957535] [2021-02-24 04:17:22,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:22,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:22,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384462711] [2021-02-24 04:17:22,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:22,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:22,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:22,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:22,075 INFO L87 Difference]: Start difference. First operand 13623 states and 17462 transitions. Second operand 4 states. [2021-02-24 04:17:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:24,046 INFO L93 Difference]: Finished difference Result 16187 states and 20664 transitions. [2021-02-24 04:17:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:24,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2021-02-24 04:17:24,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:24,087 INFO L225 Difference]: With dead ends: 16187 [2021-02-24 04:17:24,087 INFO L226 Difference]: Without dead ends: 16185 [2021-02-24 04:17:24,093 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 [2021-02-24 04:17:24,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2021-02-24 04:17:25,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 13623. [2021-02-24 04:17:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13623 states. [2021-02-24 04:17:25,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 17334 transitions. [2021-02-24 04:17:25,792 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 17334 transitions. Word has length 88 [2021-02-24 04:17:25,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:25,793 INFO L480 AbstractCegarLoop]: Abstraction has 13623 states and 17334 transitions. [2021-02-24 04:17:25,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:25,793 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 17334 transitions. [2021-02-24 04:17:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-24 04:17:25,803 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:25,804 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] [2021-02-24 04:17:25,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-24 04:17:25,804 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:25,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:25,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1838349256, now seen corresponding path program 1 times [2021-02-24 04:17:25,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:25,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474316371] [2021-02-24 04:17:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:25,807 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:25,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:25,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:25,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:25,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:25,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:25,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:25,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:25,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:25,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:25,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474316371] [2021-02-24 04:17:25,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:25,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:25,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058151556] [2021-02-24 04:17:25,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:25,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:25,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:25,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:25,877 INFO L87 Difference]: Start difference. First operand 13623 states and 17334 transitions. Second operand 4 states. [2021-02-24 04:17:28,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:28,014 INFO L93 Difference]: Finished difference Result 16059 states and 20280 transitions. [2021-02-24 04:17:28,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:28,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2021-02-24 04:17:28,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:28,058 INFO L225 Difference]: With dead ends: 16059 [2021-02-24 04:17:28,058 INFO L226 Difference]: Without dead ends: 16057 [2021-02-24 04:17:28,065 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 [2021-02-24 04:17:28,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16057 states. [2021-02-24 04:17:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16057 to 13623. [2021-02-24 04:17:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13623 states. [2021-02-24 04:17:30,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 17206 transitions. [2021-02-24 04:17:30,161 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 17206 transitions. Word has length 89 [2021-02-24 04:17:30,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:30,161 INFO L480 AbstractCegarLoop]: Abstraction has 13623 states and 17206 transitions. [2021-02-24 04:17:30,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:30,161 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 17206 transitions. [2021-02-24 04:17:30,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-24 04:17:30,170 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:30,171 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] [2021-02-24 04:17:30,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-24 04:17:30,171 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:30,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:30,171 INFO L82 PathProgramCache]: Analyzing trace with hash 2072232263, now seen corresponding path program 1 times [2021-02-24 04:17:30,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:30,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846737439] [2021-02-24 04:17:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:30,173 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:30,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:30,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:30,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:30,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:30,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:30,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:30,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:30,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:30,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:30,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846737439] [2021-02-24 04:17:30,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:30,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:30,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662282535] [2021-02-24 04:17:30,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:30,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:30,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:30,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:30,244 INFO L87 Difference]: Start difference. First operand 13623 states and 17206 transitions. Second operand 4 states. [2021-02-24 04:17:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:33,678 INFO L93 Difference]: Finished difference Result 39995 states and 50488 transitions. [2021-02-24 04:17:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:33,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2021-02-24 04:17:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:33,742 INFO L225 Difference]: With dead ends: 39995 [2021-02-24 04:17:33,742 INFO L226 Difference]: Without dead ends: 26425 [2021-02-24 04:17:33,783 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 [2021-02-24 04:17:33,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26425 states. [2021-02-24 04:17:37,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26425 to 26423. [2021-02-24 04:17:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26423 states. [2021-02-24 04:17:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26423 states to 26423 states and 32822 transitions. [2021-02-24 04:17:37,051 INFO L78 Accepts]: Start accepts. Automaton has 26423 states and 32822 transitions. Word has length 89 [2021-02-24 04:17:37,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:37,051 INFO L480 AbstractCegarLoop]: Abstraction has 26423 states and 32822 transitions. [2021-02-24 04:17:37,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 26423 states and 32822 transitions. [2021-02-24 04:17:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-24 04:17:37,066 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:37,066 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] [2021-02-24 04:17:37,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-24 04:17:37,066 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:37,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:37,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1064358977, now seen corresponding path program 1 times [2021-02-24 04:17:37,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:37,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752354537] [2021-02-24 04:17:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:37,069 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:37,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:37,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:37,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:37,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:37,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:37,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:37,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:37,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:37,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:37,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752354537] [2021-02-24 04:17:37,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:37,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:37,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360571375] [2021-02-24 04:17:37,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:37,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:37,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:37,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:37,130 INFO L87 Difference]: Start difference. First operand 26423 states and 32822 transitions. Second operand 4 states. [2021-02-24 04:17:40,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:40,953 INFO L93 Difference]: Finished difference Result 30779 states and 37688 transitions. [2021-02-24 04:17:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:40,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2021-02-24 04:17:40,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:40,988 INFO L225 Difference]: With dead ends: 30779 [2021-02-24 04:17:40,988 INFO L226 Difference]: Without dead ends: 30777 [2021-02-24 04:17:40,996 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 [2021-02-24 04:17:41,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30777 states. [2021-02-24 04:17:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30777 to 26423. [2021-02-24 04:17:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26423 states. [2021-02-24 04:17:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26423 states to 26423 states and 32566 transitions. [2021-02-24 04:17:44,172 INFO L78 Accepts]: Start accepts. Automaton has 26423 states and 32566 transitions. Word has length 90 [2021-02-24 04:17:44,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:44,172 INFO L480 AbstractCegarLoop]: Abstraction has 26423 states and 32566 transitions. [2021-02-24 04:17:44,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:44,172 INFO L276 IsEmpty]: Start isEmpty. Operand 26423 states and 32566 transitions. [2021-02-24 04:17:44,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-24 04:17:44,186 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:44,186 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] [2021-02-24 04:17:44,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-24 04:17:44,186 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:44,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:44,187 INFO L82 PathProgramCache]: Analyzing trace with hash -185062375, now seen corresponding path program 1 times [2021-02-24 04:17:44,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:44,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845012337] [2021-02-24 04:17:44,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:44,188 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:44,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:44,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:44,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:44,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:44,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:44,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:44,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:44,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:44,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845012337] [2021-02-24 04:17:44,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:44,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:44,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120353735] [2021-02-24 04:17:44,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:44,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:44,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:44,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:44,243 INFO L87 Difference]: Start difference. First operand 26423 states and 32566 transitions. Second operand 4 states. [2021-02-24 04:17:50,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:50,703 INFO L93 Difference]: Finished difference Result 77625 states and 95543 transitions. [2021-02-24 04:17:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:50,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2021-02-24 04:17:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:50,738 INFO L225 Difference]: With dead ends: 77625 [2021-02-24 04:17:50,739 INFO L226 Difference]: Without dead ends: 26423 [2021-02-24 04:17:50,822 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 [2021-02-24 04:17:50,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26423 states. [2021-02-24 04:17:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26423 to 26423. [2021-02-24 04:17:53,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26423 states. [2021-02-24 04:17:53,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26423 states to 26423 states and 31542 transitions. [2021-02-24 04:17:53,977 INFO L78 Accepts]: Start accepts. Automaton has 26423 states and 31542 transitions. Word has length 90 [2021-02-24 04:17:53,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:53,977 INFO L480 AbstractCegarLoop]: Abstraction has 26423 states and 31542 transitions. [2021-02-24 04:17:53,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:53,977 INFO L276 IsEmpty]: Start isEmpty. Operand 26423 states and 31542 transitions. [2021-02-24 04:17:53,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-24 04:17:53,991 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:53,991 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] [2021-02-24 04:17:53,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-24 04:17:53,991 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:53,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:53,991 INFO L82 PathProgramCache]: Analyzing trace with hash -854000612, now seen corresponding path program 1 times [2021-02-24 04:17:53,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:53,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841413566] [2021-02-24 04:17:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:53,993 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:54,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:54,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:54,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:54,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:54,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:54,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:54,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:54,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:54,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:54,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841413566] [2021-02-24 04:17:54,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:54,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:17:54,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049003563] [2021-02-24 04:17:54,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:17:54,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:54,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:17:54,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:17:54,054 INFO L87 Difference]: Start difference. First operand 26423 states and 31542 transitions. Second operand 4 states. [2021-02-24 04:17:57,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:57,459 INFO L93 Difference]: Finished difference Result 26423 states and 31542 transitions. [2021-02-24 04:17:57,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:17:57,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2021-02-24 04:17:57,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:57,460 INFO L225 Difference]: With dead ends: 26423 [2021-02-24 04:17:57,460 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:17:57,492 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 [2021-02-24 04:17:57,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:17:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:17:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:17:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:17:57,493 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2021-02-24 04:17:57,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:57,493 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:17:57,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:17:57,494 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:17:57,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:17:57,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-24 04:17:57,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:18:00,103 WARN L202 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 1085 DAG size of output: 65 [2021-02-24 04:18:11,242 WARN L202 SmtUtils]: Spent 11.13 s on a formula simplification. DAG size of input: 2619 DAG size of output: 31 [2021-02-24 04:18:11,675 WARN L202 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 31 [2021-02-24 04:18:13,573 WARN L202 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 1286 DAG size of output: 65 [2021-02-24 04:18:14,950 WARN L202 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 964 DAG size of output: 47 [2021-02-24 04:18:20,530 WARN L202 SmtUtils]: Spent 5.57 s on a formula simplification. DAG size of input: 2308 DAG size of output: 34 [2021-02-24 04:18:22,229 WARN L202 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 1089 DAG size of output: 121 [2021-02-24 04:18:22,584 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 45 [2021-02-24 04:18:29,877 WARN L202 SmtUtils]: Spent 7.29 s on a formula simplification. DAG size of input: 1100 DAG size of output: 581 [2021-02-24 04:18:30,975 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 592 DAG size of output: 191 [2021-02-24 04:18:31,546 WARN L202 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 87 [2021-02-24 04:18:43,403 WARN L202 SmtUtils]: Spent 11.85 s on a formula simplification. DAG size of input: 2793 DAG size of output: 31 [2021-02-24 04:18:47,614 WARN L202 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 1093 DAG size of output: 321 [2021-02-24 04:18:47,982 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 65 [2021-02-24 04:18:51,823 WARN L202 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 1670 DAG size of output: 53 [2021-02-24 04:18:56,822 WARN L202 SmtUtils]: Spent 4.99 s on a formula simplification. DAG size of input: 1540 DAG size of output: 41 [2021-02-24 04:19:03,003 WARN L202 SmtUtils]: Spent 6.17 s on a formula simplification. DAG size of input: 2233 DAG size of output: 31 [2021-02-24 04:19:17,375 WARN L202 SmtUtils]: Spent 14.37 s on a formula simplification that was a NOOP. DAG size: 1097 [2021-02-24 04:19:21,745 WARN L202 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 1106 DAG size of output: 321 [2021-02-24 04:19:22,422 WARN L202 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 121 [2021-02-24 04:19:23,208 WARN L202 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 123 [2021-02-24 04:19:23,758 WARN L202 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 676 DAG size of output: 67 [2021-02-24 04:19:24,767 WARN L202 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 1079 DAG size of output: 39 [2021-02-24 04:19:39,907 WARN L202 SmtUtils]: Spent 15.12 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-24 04:19:40,900 WARN L202 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 1076 DAG size of output: 31 [2021-02-24 04:19:42,879 WARN L202 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 579 DAG size of output: 321 [2021-02-24 04:19:49,831 WARN L202 SmtUtils]: Spent 6.94 s on a formula simplification. DAG size of input: 2054 DAG size of output: 45 [2021-02-24 04:19:53,701 WARN L202 SmtUtils]: Spent 3.87 s on a formula simplification that was a NOOP. DAG size: 583 [2021-02-24 04:19:59,529 WARN L202 SmtUtils]: Spent 5.82 s on a formula simplification. DAG size of input: 2308 DAG size of output: 34 [2021-02-24 04:20:14,774 WARN L202 SmtUtils]: Spent 15.23 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-24 04:20:15,868 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 1083 DAG size of output: 53 [2021-02-24 04:20:27,057 WARN L202 SmtUtils]: Spent 11.18 s on a formula simplification. DAG size of input: 2767 DAG size of output: 31 [2021-02-24 04:20:29,680 WARN L202 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 1118 DAG size of output: 189 [2021-02-24 04:20:30,251 WARN L202 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 87 [2021-02-24 04:20:30,961 WARN L202 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 772 DAG size of output: 55 [2021-02-24 04:20:32,372 WARN L202 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1087 DAG size of output: 85 [2021-02-24 04:20:36,403 WARN L202 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 1847 DAG size of output: 31 [2021-02-24 04:20:36,685 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 565 DAG size of output: 39 [2021-02-24 04:20:52,809 WARN L202 SmtUtils]: Spent 16.11 s on a formula simplification. DAG size of input: 2822 DAG size of output: 39 [2021-02-24 04:20:54,870 WARN L202 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 586 DAG size of output: 323 [2021-02-24 04:21:09,240 WARN L202 SmtUtils]: Spent 14.35 s on a formula simplification. DAG size of input: 2815 DAG size of output: 31 [2021-02-24 04:21:11,743 WARN L202 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 1091 DAG size of output: 189 [2021-02-24 04:21:12,071 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 53 [2021-02-24 04:21:14,038 WARN L202 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 1142 DAG size of output: 121 [2021-02-24 04:21:14,598 WARN L202 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 676 DAG size of output: 67 [2021-02-24 04:21:16,037 WARN L202 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 964 DAG size of output: 47 [2021-02-24 04:21:26,639 WARN L202 SmtUtils]: Spent 10.59 s on a formula simplification. DAG size of input: 2717 DAG size of output: 31 [2021-02-24 04:21:34,340 WARN L202 SmtUtils]: Spent 7.69 s on a formula simplification. DAG size of input: 1095 DAG size of output: 581 [2021-02-24 04:21:34,806 WARN L202 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 573 DAG size of output: 85 [2021-02-24 04:21:38,721 WARN L202 SmtUtils]: Spent 3.91 s on a formula simplification that was a NOOP. DAG size: 583 [2021-02-24 04:21:53,998 WARN L202 SmtUtils]: Spent 15.27 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-24 04:21:55,106 WARN L202 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 592 DAG size of output: 191 [2021-02-24 04:22:10,449 WARN L202 SmtUtils]: Spent 15.33 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-24 04:22:25,977 WARN L202 SmtUtils]: Spent 15.52 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-24 04:22:41,249 WARN L202 SmtUtils]: Spent 15.26 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-24 04:22:42,297 WARN L202 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 1076 DAG size of output: 31 [2021-02-24 04:22:43,291 WARN L202 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 189 [2021-02-24 04:22:44,932 WARN L202 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 1190 DAG size of output: 85 [2021-02-24 04:22:45,669 WARN L202 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 772 DAG size of output: 55 [2021-02-24 04:22:50,861 WARN L202 SmtUtils]: Spent 5.19 s on a formula simplification. DAG size of input: 1540 DAG size of output: 41 [2021-02-24 04:22:51,968 WARN L202 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 1081 DAG size of output: 45 [2021-02-24 04:23:05,503 WARN L202 SmtUtils]: Spent 13.53 s on a formula simplification. DAG size of input: 2807 DAG size of output: 31 [2021-02-24 04:23:09,178 WARN L202 SmtUtils]: Spent 3.67 s on a formula simplification that was a NOOP. DAG size: 581 [2021-02-24 04:23:11,289 WARN L202 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 586 DAG size of output: 323 [2021-02-24 04:23:12,092 WARN L202 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 123 [2021-02-24 04:23:12,649 WARN L202 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-02-24 04:23:13,197 WARN L202 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-02-24 04:23:13,332 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2021-02-24 04:23:16,662 WARN L202 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2021-02-24 04:24:38,985 WARN L202 SmtUtils]: Spent 1.37 m on a formula simplification. DAG size of input: 571 DAG size of output: 551 [2021-02-24 04:24:48,675 WARN L202 SmtUtils]: Spent 9.68 s on a formula simplification. DAG size of input: 181 DAG size of output: 161 [2021-02-24 04:24:50,202 WARN L202 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-02-24 04:25:15,620 WARN L202 SmtUtils]: Spent 25.40 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2021-02-24 04:25:16,195 WARN L202 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-02-24 04:25:16,445 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2021-02-24 04:29:52,866 WARN L202 SmtUtils]: Spent 4.61 m on a formula simplification. DAG size of input: 1087 DAG size of output: 1067 [2021-02-24 04:30:18,279 WARN L202 SmtUtils]: Spent 25.39 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2021-02-24 04:30:21,616 WARN L202 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2021-02-24 04:30:25,309 WARN L202 SmtUtils]: Spent 3.69 s on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2021-02-24 04:30:25,961 WARN L202 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37