/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-b7b32d2 [2021-02-22 01:52:05,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:52:05,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:52:05,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:52:05,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:52:05,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:52:05,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:52:05,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:52:05,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:52:05,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:52:05,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:52:05,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:52:05,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:52:05,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:52:05,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:52:05,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:52:05,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:52:05,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:52:05,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:52:05,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:52:05,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:52:05,975 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:52:05,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:52:05,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:52:05,977 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:52:05,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:52:05,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:52:05,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:52:05,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:52:05,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:52:05,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:52:05,978 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:52:05,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:52:05,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:52:05,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:52:05,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:52:05,979 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:52:05,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:52:05,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:52:05,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:52:05,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:52:05,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:52:05,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:52:05,981 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:52:05,981 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:52:06,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:52:06,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:52:06,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:52:06,384 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:52:06,385 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:52:06,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2021-02-22 01:52:06,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f9732c3d/d617c3c75a954c2eaa0f2a77d2cb23ee/FLAG90f141655 [2021-02-22 01:52:07,125 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:52:07,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c [2021-02-22 01:52:07,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f9732c3d/d617c3c75a954c2eaa0f2a77d2cb23ee/FLAG90f141655 [2021-02-22 01:52:07,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f9732c3d/d617c3c75a954c2eaa0f2a77d2cb23ee [2021-02-22 01:52:07,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:52:07,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:52:07,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:52:07,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:52:07,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:52:07,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:52:07" (1/1) ... [2021-02-22 01:52:07,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2323acea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:52:07, skipping insertion in model container [2021-02-22 01:52:07,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:52:07" (1/1) ... [2021-02-22 01:52:07,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:52:07,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:52:07,729 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] [2021-02-22 01:52:07,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:52:07,748 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:52:07,814 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] [2021-02-22 01:52:07,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:52:07,839 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:52:07,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:52:07 WrapperNode [2021-02-22 01:52:07,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:52:07,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:52:07,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:52:07,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:52:07,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:52:07" (1/1) ... [2021-02-22 01:52:07,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:52:07" (1/1) ... [2021-02-22 01:52:07,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:52:07" (1/1) ... [2021-02-22 01:52:07,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:52:07" (1/1) ... [2021-02-22 01:52:07,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:52:07" (1/1) ... [2021-02-22 01:52:07,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:52:07" (1/1) ... [2021-02-22 01:52:07,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:52:07" (1/1) ... [2021-02-22 01:52:07,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:52:07,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:52:07,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:52:07,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:52:07,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:52:07" (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 [2021-02-22 01:52:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:52:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:52:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:52:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:52:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:52:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:52:08,016 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:52:08,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:52:08,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:52:08,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:52:08,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:52:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:52:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:52:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:52:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:52:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:52:08,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:52:08,743 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-22 01:52:08,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:52:08 BoogieIcfgContainer [2021-02-22 01:52:08,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:52:08,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:52:08,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:52:08,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:52:08,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:52:07" (1/3) ... [2021-02-22 01:52:08,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c9af4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:52:08, skipping insertion in model container [2021-02-22 01:52:08,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:52:07" (2/3) ... [2021-02-22 01:52:08,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c9af4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:52:08, skipping insertion in model container [2021-02-22 01:52:08,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:52:08" (3/3) ... [2021-02-22 01:52:08,760 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2021-02-22 01:52:08,768 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:52:08,773 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:52:08,796 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:52:08,822 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:52:08,822 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:52:08,822 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:52:08,823 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:52:08,823 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:52:08,823 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:52:08,823 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:52:08,823 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:52:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2021-02-22 01:52:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-02-22 01:52:08,854 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:08,855 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] [2021-02-22 01:52:08,855 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:08,862 INFO L82 PathProgramCache]: Analyzing trace with hash -410987913, now seen corresponding path program 1 times [2021-02-22 01:52:08,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:08,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390931999] [2021-02-22 01:52:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:08,953 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:09,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:09,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:09,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:09,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:09,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:09,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390931999] [2021-02-22 01:52:09,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:09,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:09,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123856484] [2021-02-22 01:52:09,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:09,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:09,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:09,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:09,294 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 4 states. [2021-02-22 01:52:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:09,997 INFO L93 Difference]: Finished difference Result 266 states and 362 transitions. [2021-02-22 01:52:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:10,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2021-02-22 01:52:10,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:10,027 INFO L225 Difference]: With dead ends: 266 [2021-02-22 01:52:10,027 INFO L226 Difference]: Without dead ends: 184 [2021-02-22 01:52:10,034 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 [2021-02-22 01:52:10,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-02-22 01:52:10,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2021-02-22 01:52:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-02-22 01:52:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 238 transitions. [2021-02-22 01:52:10,168 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 238 transitions. Word has length 81 [2021-02-22 01:52:10,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:10,170 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 238 transitions. [2021-02-22 01:52:10,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 238 transitions. [2021-02-22 01:52:10,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-02-22 01:52:10,177 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:10,178 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] [2021-02-22 01:52:10,178 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:52:10,178 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:10,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:10,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1499658385, now seen corresponding path program 1 times [2021-02-22 01:52:10,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:10,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549966737] [2021-02-22 01:52:10,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:10,191 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:10,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:10,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:10,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:10,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:10,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:10,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:10,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:10,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:10,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:10,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:10,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549966737] [2021-02-22 01:52:10,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:10,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:10,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022471479] [2021-02-22 01:52:10,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:10,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:10,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:10,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:10,420 INFO L87 Difference]: Start difference. First operand 182 states and 238 transitions. Second operand 4 states. [2021-02-22 01:52:10,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:10,753 INFO L93 Difference]: Finished difference Result 219 states and 291 transitions. [2021-02-22 01:52:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:10,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2021-02-22 01:52:10,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:10,757 INFO L225 Difference]: With dead ends: 219 [2021-02-22 01:52:10,757 INFO L226 Difference]: Without dead ends: 217 [2021-02-22 01:52:10,758 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 [2021-02-22 01:52:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-02-22 01:52:10,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 182. [2021-02-22 01:52:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-02-22 01:52:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 237 transitions. [2021-02-22 01:52:10,795 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 237 transitions. Word has length 82 [2021-02-22 01:52:10,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:10,796 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 237 transitions. [2021-02-22 01:52:10,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:10,796 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 237 transitions. [2021-02-22 01:52:10,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-02-22 01:52:10,798 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:10,798 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] [2021-02-22 01:52:10,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:52:10,799 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:10,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:10,799 INFO L82 PathProgramCache]: Analyzing trace with hash 144520521, now seen corresponding path program 1 times [2021-02-22 01:52:10,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:10,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108549613] [2021-02-22 01:52:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:10,802 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:10,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:10,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:10,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:10,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:10,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:10,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:10,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:10,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:10,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:10,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108549613] [2021-02-22 01:52:10,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:10,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:10,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368687726] [2021-02-22 01:52:10,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:10,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:10,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:10,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:10,930 INFO L87 Difference]: Start difference. First operand 182 states and 237 transitions. Second operand 4 states. [2021-02-22 01:52:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:11,233 INFO L93 Difference]: Finished difference Result 434 states and 597 transitions. [2021-02-22 01:52:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:11,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2021-02-22 01:52:11,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:11,237 INFO L225 Difference]: With dead ends: 434 [2021-02-22 01:52:11,237 INFO L226 Difference]: Without dead ends: 305 [2021-02-22 01:52:11,238 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 [2021-02-22 01:52:11,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-02-22 01:52:11,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 303. [2021-02-22 01:52:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2021-02-22 01:52:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 408 transitions. [2021-02-22 01:52:11,293 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 408 transitions. Word has length 82 [2021-02-22 01:52:11,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:11,293 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 408 transitions. [2021-02-22 01:52:11,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 408 transitions. [2021-02-22 01:52:11,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-22 01:52:11,296 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:11,296 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] [2021-02-22 01:52:11,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:52:11,296 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:11,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1463383348, now seen corresponding path program 1 times [2021-02-22 01:52:11,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:11,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792310635] [2021-02-22 01:52:11,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:11,300 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:11,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:11,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:11,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:11,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:11,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:11,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:11,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:11,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:11,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:11,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792310635] [2021-02-22 01:52:11,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:11,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:11,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628428327] [2021-02-22 01:52:11,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:11,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:11,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:11,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:11,415 INFO L87 Difference]: Start difference. First operand 303 states and 408 transitions. Second operand 4 states. [2021-02-22 01:52:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:11,733 INFO L93 Difference]: Finished difference Result 369 states and 504 transitions. [2021-02-22 01:52:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:11,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-02-22 01:52:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:11,736 INFO L225 Difference]: With dead ends: 369 [2021-02-22 01:52:11,736 INFO L226 Difference]: Without dead ends: 367 [2021-02-22 01:52:11,737 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 [2021-02-22 01:52:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-02-22 01:52:11,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 303. [2021-02-22 01:52:11,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2021-02-22 01:52:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 406 transitions. [2021-02-22 01:52:11,795 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 406 transitions. Word has length 83 [2021-02-22 01:52:11,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:11,796 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 406 transitions. [2021-02-22 01:52:11,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:11,796 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 406 transitions. [2021-02-22 01:52:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-22 01:52:11,798 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:11,798 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] [2021-02-22 01:52:11,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:52:11,798 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:11,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:11,799 INFO L82 PathProgramCache]: Analyzing trace with hash 185413163, now seen corresponding path program 1 times [2021-02-22 01:52:11,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:11,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266547630] [2021-02-22 01:52:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:11,802 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:11,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:11,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:11,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:11,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:11,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:11,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:11,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:11,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:11,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:11,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266547630] [2021-02-22 01:52:11,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:11,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:11,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74823536] [2021-02-22 01:52:11,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:11,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:11,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:11,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:11,914 INFO L87 Difference]: Start difference. First operand 303 states and 406 transitions. Second operand 4 states. [2021-02-22 01:52:12,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:12,297 INFO L93 Difference]: Finished difference Result 791 states and 1096 transitions. [2021-02-22 01:52:12,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:12,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-02-22 01:52:12,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:12,301 INFO L225 Difference]: With dead ends: 791 [2021-02-22 01:52:12,301 INFO L226 Difference]: Without dead ends: 541 [2021-02-22 01:52:12,304 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 [2021-02-22 01:52:12,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-02-22 01:52:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2021-02-22 01:52:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2021-02-22 01:52:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 734 transitions. [2021-02-22 01:52:12,456 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 734 transitions. Word has length 83 [2021-02-22 01:52:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:12,457 INFO L480 AbstractCegarLoop]: Abstraction has 539 states and 734 transitions. [2021-02-22 01:52:12,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 734 transitions. [2021-02-22 01:52:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-22 01:52:12,459 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:12,459 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] [2021-02-22 01:52:12,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:52:12,459 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:12,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:12,460 INFO L82 PathProgramCache]: Analyzing trace with hash -338856829, now seen corresponding path program 1 times [2021-02-22 01:52:12,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:12,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725096398] [2021-02-22 01:52:12,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:12,463 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:12,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:12,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:12,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:12,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:12,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:12,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:12,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:12,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:12,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:12,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725096398] [2021-02-22 01:52:12,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:12,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:12,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657683199] [2021-02-22 01:52:12,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:12,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:12,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:12,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:12,547 INFO L87 Difference]: Start difference. First operand 539 states and 734 transitions. Second operand 4 states. [2021-02-22 01:52:12,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:12,947 INFO L93 Difference]: Finished difference Result 659 states and 908 transitions. [2021-02-22 01:52:12,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:12,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2021-02-22 01:52:12,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:12,952 INFO L225 Difference]: With dead ends: 659 [2021-02-22 01:52:12,952 INFO L226 Difference]: Without dead ends: 657 [2021-02-22 01:52:12,953 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 [2021-02-22 01:52:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-02-22 01:52:13,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 539. [2021-02-22 01:52:13,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2021-02-22 01:52:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 730 transitions. [2021-02-22 01:52:13,085 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 730 transitions. Word has length 84 [2021-02-22 01:52:13,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:13,085 INFO L480 AbstractCegarLoop]: Abstraction has 539 states and 730 transitions. [2021-02-22 01:52:13,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:13,085 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 730 transitions. [2021-02-22 01:52:13,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-22 01:52:13,087 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:13,087 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] [2021-02-22 01:52:13,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:52:13,088 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:13,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:13,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1453085437, now seen corresponding path program 1 times [2021-02-22 01:52:13,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:13,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945627684] [2021-02-22 01:52:13,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:13,091 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:13,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:13,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:13,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:13,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945627684] [2021-02-22 01:52:13,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:13,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:13,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789033289] [2021-02-22 01:52:13,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:13,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:13,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:13,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:13,166 INFO L87 Difference]: Start difference. First operand 539 states and 730 transitions. Second operand 4 states. [2021-02-22 01:52:13,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:13,666 INFO L93 Difference]: Finished difference Result 1487 states and 2052 transitions. [2021-02-22 01:52:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:13,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2021-02-22 01:52:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:13,672 INFO L225 Difference]: With dead ends: 1487 [2021-02-22 01:52:13,672 INFO L226 Difference]: Without dead ends: 1001 [2021-02-22 01:52:13,675 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 [2021-02-22 01:52:13,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2021-02-22 01:52:13,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 999. [2021-02-22 01:52:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2021-02-22 01:52:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1358 transitions. [2021-02-22 01:52:13,835 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1358 transitions. Word has length 84 [2021-02-22 01:52:13,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:13,835 INFO L480 AbstractCegarLoop]: Abstraction has 999 states and 1358 transitions. [2021-02-22 01:52:13,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:13,835 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1358 transitions. [2021-02-22 01:52:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-02-22 01:52:13,837 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:13,837 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] [2021-02-22 01:52:13,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 01:52:13,838 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:13,838 INFO L82 PathProgramCache]: Analyzing trace with hash 161727264, now seen corresponding path program 1 times [2021-02-22 01:52:13,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:13,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585449407] [2021-02-22 01:52:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:13,841 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:13,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:13,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:13,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:13,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585449407] [2021-02-22 01:52:13,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:13,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:13,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116668412] [2021-02-22 01:52:13,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:13,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:13,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:13,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:13,911 INFO L87 Difference]: Start difference. First operand 999 states and 1358 transitions. Second operand 4 states. [2021-02-22 01:52:14,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:14,392 INFO L93 Difference]: Finished difference Result 1219 states and 1672 transitions. [2021-02-22 01:52:14,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:14,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2021-02-22 01:52:14,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:14,399 INFO L225 Difference]: With dead ends: 1219 [2021-02-22 01:52:14,399 INFO L226 Difference]: Without dead ends: 1217 [2021-02-22 01:52:14,400 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 [2021-02-22 01:52:14,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-02-22 01:52:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 999. [2021-02-22 01:52:14,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2021-02-22 01:52:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1350 transitions. [2021-02-22 01:52:14,578 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1350 transitions. Word has length 85 [2021-02-22 01:52:14,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:14,579 INFO L480 AbstractCegarLoop]: Abstraction has 999 states and 1350 transitions. [2021-02-22 01:52:14,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:14,579 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1350 transitions. [2021-02-22 01:52:14,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-02-22 01:52:14,581 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:14,581 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] [2021-02-22 01:52:14,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 01:52:14,582 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:14,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2096220639, now seen corresponding path program 1 times [2021-02-22 01:52:14,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:14,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335245233] [2021-02-22 01:52:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:14,586 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:14,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:14,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:14,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:14,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:14,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:14,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:14,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:14,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:14,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:14,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335245233] [2021-02-22 01:52:14,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:14,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:14,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908562252] [2021-02-22 01:52:14,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:14,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:14,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:14,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:14,679 INFO L87 Difference]: Start difference. First operand 999 states and 1350 transitions. Second operand 4 states. [2021-02-22 01:52:15,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:15,318 INFO L93 Difference]: Finished difference Result 2843 states and 3880 transitions. [2021-02-22 01:52:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:15,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2021-02-22 01:52:15,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:15,328 INFO L225 Difference]: With dead ends: 2843 [2021-02-22 01:52:15,329 INFO L226 Difference]: Without dead ends: 1897 [2021-02-22 01:52:15,332 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 [2021-02-22 01:52:15,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2021-02-22 01:52:15,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1895. [2021-02-22 01:52:15,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2021-02-22 01:52:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2550 transitions. [2021-02-22 01:52:15,588 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2550 transitions. Word has length 85 [2021-02-22 01:52:15,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:15,588 INFO L480 AbstractCegarLoop]: Abstraction has 1895 states and 2550 transitions. [2021-02-22 01:52:15,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:15,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2550 transitions. [2021-02-22 01:52:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-22 01:52:15,591 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:15,591 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] [2021-02-22 01:52:15,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 01:52:15,592 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:15,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:15,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1500034665, now seen corresponding path program 1 times [2021-02-22 01:52:15,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:15,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368361887] [2021-02-22 01:52:15,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:15,594 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:15,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:15,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:15,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:15,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:15,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:15,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:15,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:15,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:15,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:15,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368361887] [2021-02-22 01:52:15,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:15,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:15,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974197956] [2021-02-22 01:52:15,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:15,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:15,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:15,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:15,663 INFO L87 Difference]: Start difference. First operand 1895 states and 2550 transitions. Second operand 4 states. [2021-02-22 01:52:16,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:16,414 INFO L93 Difference]: Finished difference Result 2299 states and 3112 transitions. [2021-02-22 01:52:16,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:16,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-02-22 01:52:16,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:16,427 INFO L225 Difference]: With dead ends: 2299 [2021-02-22 01:52:16,427 INFO L226 Difference]: Without dead ends: 2297 [2021-02-22 01:52:16,429 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 [2021-02-22 01:52:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2021-02-22 01:52:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1895. [2021-02-22 01:52:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2021-02-22 01:52:16,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2534 transitions. [2021-02-22 01:52:16,828 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2534 transitions. Word has length 86 [2021-02-22 01:52:16,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:16,831 INFO L480 AbstractCegarLoop]: Abstraction has 1895 states and 2534 transitions. [2021-02-22 01:52:16,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:16,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2534 transitions. [2021-02-22 01:52:16,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-22 01:52:16,838 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:16,838 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] [2021-02-22 01:52:16,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-22 01:52:16,838 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:16,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:16,839 INFO L82 PathProgramCache]: Analyzing trace with hash 558575793, now seen corresponding path program 1 times [2021-02-22 01:52:16,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:16,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700222869] [2021-02-22 01:52:16,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:16,843 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:16,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:16,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:16,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:16,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:16,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:16,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:16,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700222869] [2021-02-22 01:52:16,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:16,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:16,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716754989] [2021-02-22 01:52:16,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:16,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:16,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:16,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:16,928 INFO L87 Difference]: Start difference. First operand 1895 states and 2534 transitions. Second operand 4 states. [2021-02-22 01:52:17,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:17,774 INFO L93 Difference]: Finished difference Result 5483 states and 7368 transitions. [2021-02-22 01:52:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:17,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-02-22 01:52:17,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:17,796 INFO L225 Difference]: With dead ends: 5483 [2021-02-22 01:52:17,797 INFO L226 Difference]: Without dead ends: 3641 [2021-02-22 01:52:17,802 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 [2021-02-22 01:52:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2021-02-22 01:52:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3639. [2021-02-22 01:52:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2021-02-22 01:52:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 4822 transitions. [2021-02-22 01:52:18,457 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 4822 transitions. Word has length 86 [2021-02-22 01:52:18,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:18,457 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 4822 transitions. [2021-02-22 01:52:18,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:18,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 4822 transitions. [2021-02-22 01:52:18,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-22 01:52:18,461 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:18,461 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] [2021-02-22 01:52:18,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-22 01:52:18,462 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:18,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:18,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1475046540, now seen corresponding path program 1 times [2021-02-22 01:52:18,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:18,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009018190] [2021-02-22 01:52:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:18,468 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:18,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:18,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:18,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:18,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:18,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:18,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:18,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:18,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:18,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:18,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009018190] [2021-02-22 01:52:18,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:18,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:18,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156778525] [2021-02-22 01:52:18,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:18,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:18,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:18,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:18,582 INFO L87 Difference]: Start difference. First operand 3639 states and 4822 transitions. Second operand 4 states. [2021-02-22 01:52:19,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:19,381 INFO L93 Difference]: Finished difference Result 4379 states and 5816 transitions. [2021-02-22 01:52:19,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:19,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2021-02-22 01:52:19,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:19,410 INFO L225 Difference]: With dead ends: 4379 [2021-02-22 01:52:19,410 INFO L226 Difference]: Without dead ends: 4377 [2021-02-22 01:52:19,412 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 [2021-02-22 01:52:19,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2021-02-22 01:52:20,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 3639. [2021-02-22 01:52:20,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2021-02-22 01:52:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 4790 transitions. [2021-02-22 01:52:20,027 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 4790 transitions. Word has length 87 [2021-02-22 01:52:20,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:20,027 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 4790 transitions. [2021-02-22 01:52:20,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:20,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 4790 transitions. [2021-02-22 01:52:20,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-22 01:52:20,031 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:20,031 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] [2021-02-22 01:52:20,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-22 01:52:20,032 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:20,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:20,032 INFO L82 PathProgramCache]: Analyzing trace with hash 136226195, now seen corresponding path program 1 times [2021-02-22 01:52:20,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:20,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776047638] [2021-02-22 01:52:20,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:20,037 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:20,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:20,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:20,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:20,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:20,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:20,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:20,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:20,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:20,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:20,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776047638] [2021-02-22 01:52:20,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:20,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:20,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727038942] [2021-02-22 01:52:20,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:20,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:20,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:20,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:20,120 INFO L87 Difference]: Start difference. First operand 3639 states and 4790 transitions. Second operand 4 states. [2021-02-22 01:52:21,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:21,262 INFO L93 Difference]: Finished difference Result 10619 states and 14008 transitions. [2021-02-22 01:52:21,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:21,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2021-02-22 01:52:21,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:21,297 INFO L225 Difference]: With dead ends: 10619 [2021-02-22 01:52:21,297 INFO L226 Difference]: Without dead ends: 7033 [2021-02-22 01:52:21,307 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 [2021-02-22 01:52:21,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7033 states. [2021-02-22 01:52:22,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7033 to 7031. [2021-02-22 01:52:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7031 states. [2021-02-22 01:52:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7031 states to 7031 states and 9142 transitions. [2021-02-22 01:52:22,413 INFO L78 Accepts]: Start accepts. Automaton has 7031 states and 9142 transitions. Word has length 87 [2021-02-22 01:52:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:22,413 INFO L480 AbstractCegarLoop]: Abstraction has 7031 states and 9142 transitions. [2021-02-22 01:52:22,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 7031 states and 9142 transitions. [2021-02-22 01:52:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-22 01:52:22,420 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:22,420 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] [2021-02-22 01:52:22,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-22 01:52:22,421 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:22,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:22,421 INFO L82 PathProgramCache]: Analyzing trace with hash -71709083, now seen corresponding path program 1 times [2021-02-22 01:52:22,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:22,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082528275] [2021-02-22 01:52:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:22,424 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:22,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:22,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:22,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:22,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:22,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:22,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082528275] [2021-02-22 01:52:22,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:22,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:22,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167189920] [2021-02-22 01:52:22,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:22,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:22,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:22,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:22,492 INFO L87 Difference]: Start difference. First operand 7031 states and 9142 transitions. Second operand 4 states. [2021-02-22 01:52:24,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:24,537 INFO L93 Difference]: Finished difference Result 20603 states and 26808 transitions. [2021-02-22 01:52:24,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:24,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2021-02-22 01:52:24,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:24,585 INFO L225 Difference]: With dead ends: 20603 [2021-02-22 01:52:24,586 INFO L226 Difference]: Without dead ends: 13625 [2021-02-22 01:52:24,602 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 [2021-02-22 01:52:24,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13625 states. [2021-02-22 01:52:26,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13625 to 13623. [2021-02-22 01:52:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13623 states. [2021-02-22 01:52:26,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 17462 transitions. [2021-02-22 01:52:26,032 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 17462 transitions. Word has length 88 [2021-02-22 01:52:26,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:26,032 INFO L480 AbstractCegarLoop]: Abstraction has 13623 states and 17462 transitions. [2021-02-22 01:52:26,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:26,033 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 17462 transitions. [2021-02-22 01:52:26,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-22 01:52:26,042 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:26,042 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] [2021-02-22 01:52:26,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-22 01:52:26,043 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:26,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:26,043 INFO L82 PathProgramCache]: Analyzing trace with hash -700414293, now seen corresponding path program 1 times [2021-02-22 01:52:26,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:26,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538694916] [2021-02-22 01:52:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:26,046 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:26,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:26,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:26,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:26,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:26,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:26,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:26,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:26,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:26,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:26,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538694916] [2021-02-22 01:52:26,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:26,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:26,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074224212] [2021-02-22 01:52:26,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:26,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:26,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:26,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:26,104 INFO L87 Difference]: Start difference. First operand 13623 states and 17462 transitions. Second operand 4 states. [2021-02-22 01:52:28,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:28,279 INFO L93 Difference]: Finished difference Result 16187 states and 20664 transitions. [2021-02-22 01:52:28,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:28,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2021-02-22 01:52:28,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:28,313 INFO L225 Difference]: With dead ends: 16187 [2021-02-22 01:52:28,313 INFO L226 Difference]: Without dead ends: 16185 [2021-02-22 01:52:28,319 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 [2021-02-22 01:52:28,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2021-02-22 01:52:29,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 13623. [2021-02-22 01:52:29,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13623 states. [2021-02-22 01:52:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 17334 transitions. [2021-02-22 01:52:29,819 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 17334 transitions. Word has length 88 [2021-02-22 01:52:29,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:29,820 INFO L480 AbstractCegarLoop]: Abstraction has 13623 states and 17334 transitions. [2021-02-22 01:52:29,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:29,820 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 17334 transitions. [2021-02-22 01:52:29,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-22 01:52:29,830 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:29,830 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] [2021-02-22 01:52:29,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-22 01:52:29,831 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:29,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:29,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1838349256, now seen corresponding path program 1 times [2021-02-22 01:52:29,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:29,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641081581] [2021-02-22 01:52:29,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:29,833 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:29,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:29,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:29,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:29,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:29,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:29,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:29,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:29,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:29,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:29,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641081581] [2021-02-22 01:52:29,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:29,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:29,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731218973] [2021-02-22 01:52:29,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:29,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:29,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:29,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:29,901 INFO L87 Difference]: Start difference. First operand 13623 states and 17334 transitions. Second operand 4 states. [2021-02-22 01:52:31,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:31,842 INFO L93 Difference]: Finished difference Result 16059 states and 20280 transitions. [2021-02-22 01:52:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:31,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2021-02-22 01:52:31,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:31,877 INFO L225 Difference]: With dead ends: 16059 [2021-02-22 01:52:31,878 INFO L226 Difference]: Without dead ends: 16057 [2021-02-22 01:52:31,882 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 [2021-02-22 01:52:31,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16057 states. [2021-02-22 01:52:34,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16057 to 13623. [2021-02-22 01:52:34,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13623 states. [2021-02-22 01:52:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 17206 transitions. [2021-02-22 01:52:34,118 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 17206 transitions. Word has length 89 [2021-02-22 01:52:34,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:34,118 INFO L480 AbstractCegarLoop]: Abstraction has 13623 states and 17206 transitions. [2021-02-22 01:52:34,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 17206 transitions. [2021-02-22 01:52:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-22 01:52:34,127 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:34,127 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] [2021-02-22 01:52:34,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-22 01:52:34,128 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:34,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:34,128 INFO L82 PathProgramCache]: Analyzing trace with hash 2072232263, now seen corresponding path program 1 times [2021-02-22 01:52:34,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:34,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7986960] [2021-02-22 01:52:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:34,130 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:34,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:34,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:34,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:34,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:34,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:34,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:34,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:34,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:34,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:34,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7986960] [2021-02-22 01:52:34,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:34,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:34,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164921496] [2021-02-22 01:52:34,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:34,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:34,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:34,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:34,192 INFO L87 Difference]: Start difference. First operand 13623 states and 17206 transitions. Second operand 4 states. [2021-02-22 01:52:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:37,164 INFO L93 Difference]: Finished difference Result 39995 states and 50488 transitions. [2021-02-22 01:52:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:37,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2021-02-22 01:52:37,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:37,222 INFO L225 Difference]: With dead ends: 39995 [2021-02-22 01:52:37,222 INFO L226 Difference]: Without dead ends: 26425 [2021-02-22 01:52:37,255 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 [2021-02-22 01:52:37,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26425 states. [2021-02-22 01:52:40,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26425 to 26423. [2021-02-22 01:52:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26423 states. [2021-02-22 01:52:40,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26423 states to 26423 states and 32822 transitions. [2021-02-22 01:52:40,181 INFO L78 Accepts]: Start accepts. Automaton has 26423 states and 32822 transitions. Word has length 89 [2021-02-22 01:52:40,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:40,181 INFO L480 AbstractCegarLoop]: Abstraction has 26423 states and 32822 transitions. [2021-02-22 01:52:40,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:40,181 INFO L276 IsEmpty]: Start isEmpty. Operand 26423 states and 32822 transitions. [2021-02-22 01:52:40,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-22 01:52:40,195 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:40,195 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] [2021-02-22 01:52:40,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-22 01:52:40,195 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:40,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:40,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1064358977, now seen corresponding path program 1 times [2021-02-22 01:52:40,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:40,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762724993] [2021-02-22 01:52:40,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:40,198 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:40,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:40,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:40,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:40,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:40,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:40,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:40,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:40,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:40,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762724993] [2021-02-22 01:52:40,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:40,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:40,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143634769] [2021-02-22 01:52:40,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:40,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:40,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:40,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:40,270 INFO L87 Difference]: Start difference. First operand 26423 states and 32822 transitions. Second operand 4 states. [2021-02-22 01:52:44,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:44,033 INFO L93 Difference]: Finished difference Result 30779 states and 37688 transitions. [2021-02-22 01:52:44,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:44,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2021-02-22 01:52:44,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:44,075 INFO L225 Difference]: With dead ends: 30779 [2021-02-22 01:52:44,075 INFO L226 Difference]: Without dead ends: 30777 [2021-02-22 01:52:44,084 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 [2021-02-22 01:52:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30777 states. [2021-02-22 01:52:47,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30777 to 26423. [2021-02-22 01:52:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26423 states. [2021-02-22 01:52:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26423 states to 26423 states and 32566 transitions. [2021-02-22 01:52:47,360 INFO L78 Accepts]: Start accepts. Automaton has 26423 states and 32566 transitions. Word has length 90 [2021-02-22 01:52:47,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:47,361 INFO L480 AbstractCegarLoop]: Abstraction has 26423 states and 32566 transitions. [2021-02-22 01:52:47,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:47,361 INFO L276 IsEmpty]: Start isEmpty. Operand 26423 states and 32566 transitions. [2021-02-22 01:52:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-22 01:52:47,375 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:47,375 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] [2021-02-22 01:52:47,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-22 01:52:47,376 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:47,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:47,376 INFO L82 PathProgramCache]: Analyzing trace with hash -185062375, now seen corresponding path program 1 times [2021-02-22 01:52:47,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:47,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270850958] [2021-02-22 01:52:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:47,379 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:47,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:47,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:47,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:47,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:47,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:47,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:47,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:47,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:47,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:47,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270850958] [2021-02-22 01:52:47,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:47,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:47,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487003930] [2021-02-22 01:52:47,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:47,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:47,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:47,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:47,433 INFO L87 Difference]: Start difference. First operand 26423 states and 32566 transitions. Second operand 4 states. [2021-02-22 01:52:53,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:53,755 INFO L93 Difference]: Finished difference Result 77625 states and 95543 transitions. [2021-02-22 01:52:53,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:52:53,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2021-02-22 01:52:53,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:53,785 INFO L225 Difference]: With dead ends: 77625 [2021-02-22 01:52:53,786 INFO L226 Difference]: Without dead ends: 26423 [2021-02-22 01:52:53,867 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 [2021-02-22 01:52:54,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26423 states. [2021-02-22 01:52:57,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26423 to 26423. [2021-02-22 01:52:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26423 states. [2021-02-22 01:52:57,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26423 states to 26423 states and 31542 transitions. [2021-02-22 01:52:57,115 INFO L78 Accepts]: Start accepts. Automaton has 26423 states and 31542 transitions. Word has length 90 [2021-02-22 01:52:57,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:57,115 INFO L480 AbstractCegarLoop]: Abstraction has 26423 states and 31542 transitions. [2021-02-22 01:52:57,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:52:57,115 INFO L276 IsEmpty]: Start isEmpty. Operand 26423 states and 31542 transitions. [2021-02-22 01:52:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-22 01:52:57,125 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:57,125 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] [2021-02-22 01:52:57,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-22 01:52:57,125 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:57,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:57,126 INFO L82 PathProgramCache]: Analyzing trace with hash -854000612, now seen corresponding path program 1 times [2021-02-22 01:52:57,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:57,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618708174] [2021-02-22 01:52:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:57,127 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:57,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:57,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:57,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:57,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:57,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:57,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:57,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:57,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:57,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:57,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618708174] [2021-02-22 01:52:57,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:57,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:52:57,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34728586] [2021-02-22 01:52:57,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:52:57,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:57,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:52:57,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:52:57,210 INFO L87 Difference]: Start difference. First operand 26423 states and 31542 transitions. Second operand 4 states. [2021-02-22 01:53:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:53:00,667 INFO L93 Difference]: Finished difference Result 26423 states and 31542 transitions. [2021-02-22 01:53:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:53:00,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2021-02-22 01:53:00,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:53:00,668 INFO L225 Difference]: With dead ends: 26423 [2021-02-22 01:53:00,668 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 01:53:00,701 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 [2021-02-22 01:53:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 01:53:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 01:53:00,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 01:53:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 01:53:00,702 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2021-02-22 01:53:00,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:53:00,702 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 01:53:00,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:53:00,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 01:53:00,703 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 01:53:00,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-22 01:53:00,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 01:53:03,379 WARN L202 SmtUtils]: Spent 2.59 s on a formula simplification. DAG size of input: 1085 DAG size of output: 65 [2021-02-22 01:53:13,561 WARN L202 SmtUtils]: Spent 10.17 s on a formula simplification. DAG size of input: 2619 DAG size of output: 31 [2021-02-22 01:53:13,850 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 31 [2021-02-22 01:53:15,693 WARN L202 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 1286 DAG size of output: 65 [2021-02-22 01:53:17,103 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 964 DAG size of output: 47 [2021-02-22 01:53:22,627 WARN L202 SmtUtils]: Spent 5.52 s on a formula simplification. DAG size of input: 2308 DAG size of output: 34 [2021-02-22 01:53:24,379 WARN L202 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 1089 DAG size of output: 121 [2021-02-22 01:53:24,671 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 45 [2021-02-22 01:53:31,721 WARN L202 SmtUtils]: Spent 7.04 s on a formula simplification. DAG size of input: 1100 DAG size of output: 581 [2021-02-22 01:53:32,825 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 592 DAG size of output: 191 [2021-02-22 01:53:33,387 WARN L202 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 87 [2021-02-22 01:53:45,406 WARN L202 SmtUtils]: Spent 12.01 s on a formula simplification. DAG size of input: 2793 DAG size of output: 31 [2021-02-22 01:53:49,510 WARN L202 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 1093 DAG size of output: 321 [2021-02-22 01:53:49,870 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 65 [2021-02-22 01:53:53,658 WARN L202 SmtUtils]: Spent 3.78 s on a formula simplification. DAG size of input: 1670 DAG size of output: 53 [2021-02-22 01:53:58,661 WARN L202 SmtUtils]: Spent 5.00 s on a formula simplification. DAG size of input: 1540 DAG size of output: 41 [2021-02-22 01:54:04,691 WARN L202 SmtUtils]: Spent 6.02 s on a formula simplification. DAG size of input: 2233 DAG size of output: 31 [2021-02-22 01:54:18,035 WARN L202 SmtUtils]: Spent 13.34 s on a formula simplification that was a NOOP. DAG size: 1097 [2021-02-22 01:54:22,201 WARN L202 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 1106 DAG size of output: 321 [2021-02-22 01:54:22,844 WARN L202 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 121 [2021-02-22 01:54:23,607 WARN L202 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 123 [2021-02-22 01:54:24,154 WARN L202 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 676 DAG size of output: 67 [2021-02-22 01:54:25,164 WARN L202 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 1079 DAG size of output: 39 [2021-02-22 01:54:39,708 WARN L202 SmtUtils]: Spent 14.53 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-22 01:54:40,693 WARN L202 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 1076 DAG size of output: 31 [2021-02-22 01:54:42,525 WARN L202 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 579 DAG size of output: 321 [2021-02-22 01:54:49,166 WARN L202 SmtUtils]: Spent 6.63 s on a formula simplification. DAG size of input: 2054 DAG size of output: 45 [2021-02-22 01:54:52,773 WARN L202 SmtUtils]: Spent 3.60 s on a formula simplification that was a NOOP. DAG size: 583 [2021-02-22 01:54:58,271 WARN L202 SmtUtils]: Spent 5.49 s on a formula simplification. DAG size of input: 2308 DAG size of output: 34 [2021-02-22 01:55:13,108 WARN L202 SmtUtils]: Spent 14.83 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-22 01:55:14,231 WARN L202 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 1083 DAG size of output: 53 [2021-02-22 01:55:25,290 WARN L202 SmtUtils]: Spent 11.05 s on a formula simplification. DAG size of input: 2767 DAG size of output: 31 [2021-02-22 01:55:27,851 WARN L202 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 1118 DAG size of output: 189 [2021-02-22 01:55:28,424 WARN L202 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 87 [2021-02-22 01:55:29,146 WARN L202 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 772 DAG size of output: 55 [2021-02-22 01:55:30,515 WARN L202 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1087 DAG size of output: 85 [2021-02-22 01:55:34,504 WARN L202 SmtUtils]: Spent 3.98 s on a formula simplification. DAG size of input: 1847 DAG size of output: 31 [2021-02-22 01:55:34,783 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 565 DAG size of output: 39 [2021-02-22 01:55:50,736 WARN L202 SmtUtils]: Spent 15.94 s on a formula simplification. DAG size of input: 2822 DAG size of output: 39 [2021-02-22 01:55:52,730 WARN L202 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 586 DAG size of output: 323 [2021-02-22 01:56:06,632 WARN L202 SmtUtils]: Spent 13.89 s on a formula simplification. DAG size of input: 2815 DAG size of output: 31 [2021-02-22 01:56:09,048 WARN L202 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 1091 DAG size of output: 189 [2021-02-22 01:56:09,373 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 53 [2021-02-22 01:56:11,295 WARN L202 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 1142 DAG size of output: 121 [2021-02-22 01:56:11,881 WARN L202 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 676 DAG size of output: 67 [2021-02-22 01:56:13,232 WARN L202 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 964 DAG size of output: 47 [2021-02-22 01:56:23,388 WARN L202 SmtUtils]: Spent 10.14 s on a formula simplification. DAG size of input: 2717 DAG size of output: 31 [2021-02-22 01:56:30,556 WARN L202 SmtUtils]: Spent 7.16 s on a formula simplification. DAG size of input: 1095 DAG size of output: 581 [2021-02-22 01:56:31,013 WARN L202 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 573 DAG size of output: 85 [2021-02-22 01:56:34,688 WARN L202 SmtUtils]: Spent 3.67 s on a formula simplification that was a NOOP. DAG size: 583 [2021-02-22 01:56:49,596 WARN L202 SmtUtils]: Spent 14.90 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-22 01:56:50,691 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 592 DAG size of output: 191 [2021-02-22 01:57:05,601 WARN L202 SmtUtils]: Spent 14.90 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-22 01:57:20,688 WARN L202 SmtUtils]: Spent 15.08 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-22 01:57:35,626 WARN L202 SmtUtils]: Spent 14.93 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-22 01:57:36,670 WARN L202 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 1076 DAG size of output: 31 [2021-02-22 01:57:37,647 WARN L202 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 189 [2021-02-22 01:57:39,263 WARN L202 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 1190 DAG size of output: 85 [2021-02-22 01:57:40,000 WARN L202 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 772 DAG size of output: 55 [2021-02-22 01:57:45,191 WARN L202 SmtUtils]: Spent 5.19 s on a formula simplification. DAG size of input: 1540 DAG size of output: 41 [2021-02-22 01:57:46,246 WARN L202 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 1081 DAG size of output: 45 [2021-02-22 01:57:59,494 WARN L202 SmtUtils]: Spent 13.24 s on a formula simplification. DAG size of input: 2807 DAG size of output: 31 [2021-02-22 01:58:03,032 WARN L202 SmtUtils]: Spent 3.53 s on a formula simplification that was a NOOP. DAG size: 581 [2021-02-22 01:58:05,008 WARN L202 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 586 DAG size of output: 323 [2021-02-22 01:58:05,794 WARN L202 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 123 [2021-02-22 01:58:06,317 WARN L202 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-02-22 01:58:06,859 WARN L202 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-02-22 01:58:06,994 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2021-02-22 01:58:10,250 WARN L202 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2021-02-22 01:58:10,358 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15 [2021-02-22 01:59:30,627 WARN L202 SmtUtils]: Spent 1.34 m on a formula simplification. DAG size of input: 571 DAG size of output: 551 [2021-02-22 01:59:40,149 WARN L202 SmtUtils]: Spent 9.51 s on a formula simplification. DAG size of input: 181 DAG size of output: 161 [2021-02-22 01:59:41,638 WARN L202 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-02-22 02:00:06,783 WARN L202 SmtUtils]: Spent 25.13 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2021-02-22 02:00:07,348 WARN L202 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-02-22 02:00:07,595 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2021-02-22 02:04:47,240 WARN L202 SmtUtils]: Spent 4.66 m on a formula simplification. DAG size of input: 1087 DAG size of output: 1067 [2021-02-22 02:05:13,302 WARN L202 SmtUtils]: Spent 26.05 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2021-02-22 02:05:16,729 WARN L202 SmtUtils]: Spent 3.42 s on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2021-02-22 02:05:20,538 WARN L202 SmtUtils]: Spent 3.80 s on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2021-02-22 02:05:21,208 WARN L202 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-02-22 02:05:46,884 WARN L202 SmtUtils]: Spent 25.60 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2021-02-22 02:05:47,001 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15