/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:31:49,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:31:49,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:31:49,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:31:49,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:31:49,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:31:49,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:31:49,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:31:49,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:31:49,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:31:49,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:31:49,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:31:49,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:31:49,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:31:49,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:31:49,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:31:49,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:31:49,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:31:49,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:31:49,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:31:49,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:31:49,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:31:49,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:31:49,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:31:49,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:31:49,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:31:49,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:31:49,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:31:49,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:31:49,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:31:49,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:31:49,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:31:49,861 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:31:49,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:31:49,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:31:49,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:31:49,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:31:49,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:31:49,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:31:49,862 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:31:49,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:31:49,862 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:31:49,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:31:49,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:31:49,863 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:31:49,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:31:49,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:31:49,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:31:49,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:31:49,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:31:49,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:31:49,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:31:50,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:31:50,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:31:50,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:31:50,262 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:31:50,263 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:31:50,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2021-02-21 20:31:50,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9271ac23/5f5074f7053e4e698acd7ec1e7533b30/FLAGbc11260b3 [2021-02-21 20:31:50,894 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:31:50,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c [2021-02-21 20:31:50,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9271ac23/5f5074f7053e4e698acd7ec1e7533b30/FLAGbc11260b3 [2021-02-21 20:31:51,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9271ac23/5f5074f7053e4e698acd7ec1e7533b30 [2021-02-21 20:31:51,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:31:51,292 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:31:51,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:31:51,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:31:51,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:31:51,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:31:51" (1/1) ... [2021-02-21 20:31:51,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27881082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:51, skipping insertion in model container [2021-02-21 20:31:51,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:31:51" (1/1) ... [2021-02-21 20:31:51,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:31:51,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:31:51,610 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] [2021-02-21 20:31:51,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:31:51,635 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:31:51,688 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] [2021-02-21 20:31:51,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:31:51,724 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:31:51,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:51 WrapperNode [2021-02-21 20:31:51,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:31:51,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:31:51,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:31:51,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:31:51,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:51" (1/1) ... [2021-02-21 20:31:51,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:51" (1/1) ... [2021-02-21 20:31:51,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:51" (1/1) ... [2021-02-21 20:31:51,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:51" (1/1) ... [2021-02-21 20:31:51,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:51" (1/1) ... [2021-02-21 20:31:51,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:51" (1/1) ... [2021-02-21 20:31:51,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:51" (1/1) ... [2021-02-21 20:31:51,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:31:51,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:31:51,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:31:51,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:31:51,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:51" (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 [2021-02-21 20:31:51,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:31:51,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:31:51,875 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:31:51,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:31:51,876 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:31:51,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:31:51,876 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:31:51,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:31:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:31:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:31:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:31:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:31:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:31:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:31:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:31:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:31:52,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:31:52,413 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 20:31:52,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:31:52 BoogieIcfgContainer [2021-02-21 20:31:52,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:31:52,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:31:52,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:31:52,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:31:52,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:31:51" (1/3) ... [2021-02-21 20:31:52,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df9be2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:31:52, skipping insertion in model container [2021-02-21 20:31:52,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:51" (2/3) ... [2021-02-21 20:31:52,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df9be2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:31:52, skipping insertion in model container [2021-02-21 20:31:52,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:31:52" (3/3) ... [2021-02-21 20:31:52,424 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2021-02-21 20:31:52,431 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:31:52,436 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:31:52,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:31:52,483 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:31:52,483 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:31:52,483 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:31:52,483 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:31:52,484 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:31:52,484 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:31:52,484 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:31:52,484 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:31:52,503 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2021-02-21 20:31:52,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-02-21 20:31:52,516 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:52,517 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] [2021-02-21 20:31:52,518 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:52,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:52,530 INFO L82 PathProgramCache]: Analyzing trace with hash -410987913, now seen corresponding path program 1 times [2021-02-21 20:31:52,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:52,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742582490] [2021-02-21 20:31:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:52,617 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:52,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:52,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:52,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:52,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:52,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:52,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:52,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:52,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:52,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742582490] [2021-02-21 20:31:52,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:52,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:31:52,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669623109] [2021-02-21 20:31:52,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:31:52,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:52,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:31:52,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:31:52,954 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 4 states. [2021-02-21 20:31:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:53,622 INFO L93 Difference]: Finished difference Result 266 states and 362 transitions. [2021-02-21 20:31:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:31:53,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2021-02-21 20:31:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:53,638 INFO L225 Difference]: With dead ends: 266 [2021-02-21 20:31:53,638 INFO L226 Difference]: Without dead ends: 184 [2021-02-21 20:31:53,642 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 [2021-02-21 20:31:53,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-02-21 20:31:53,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2021-02-21 20:31:53,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-02-21 20:31:53,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 238 transitions. [2021-02-21 20:31:53,726 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 238 transitions. Word has length 81 [2021-02-21 20:31:53,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:31:53,727 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 238 transitions. [2021-02-21 20:31:53,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:31:53,727 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 238 transitions. [2021-02-21 20:31:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-02-21 20:31:53,730 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:53,731 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] [2021-02-21 20:31:53,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:31:53,731 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:53,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:53,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1499658385, now seen corresponding path program 1 times [2021-02-21 20:31:53,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:53,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316601366] [2021-02-21 20:31:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:53,736 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:53,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:53,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:53,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:53,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:53,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:53,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:53,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:53,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:53,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:53,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316601366] [2021-02-21 20:31:53,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:53,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:31:53,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640692397] [2021-02-21 20:31:53,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:31:53,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:53,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:31:53,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:31:53,923 INFO L87 Difference]: Start difference. First operand 182 states and 238 transitions. Second operand 4 states. [2021-02-21 20:31:54,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:54,237 INFO L93 Difference]: Finished difference Result 219 states and 291 transitions. [2021-02-21 20:31:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:31:54,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2021-02-21 20:31:54,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:54,241 INFO L225 Difference]: With dead ends: 219 [2021-02-21 20:31:54,241 INFO L226 Difference]: Without dead ends: 217 [2021-02-21 20:31:54,243 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 [2021-02-21 20:31:54,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-02-21 20:31:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 182. [2021-02-21 20:31:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-02-21 20:31:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 237 transitions. [2021-02-21 20:31:54,281 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 237 transitions. Word has length 82 [2021-02-21 20:31:54,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:31:54,282 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 237 transitions. [2021-02-21 20:31:54,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:31:54,282 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 237 transitions. [2021-02-21 20:31:54,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-02-21 20:31:54,284 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:54,284 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] [2021-02-21 20:31:54,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:31:54,285 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:54,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:54,285 INFO L82 PathProgramCache]: Analyzing trace with hash 144520521, now seen corresponding path program 1 times [2021-02-21 20:31:54,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:54,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388977344] [2021-02-21 20:31:54,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:54,289 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:54,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:54,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:54,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:54,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:54,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:54,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388977344] [2021-02-21 20:31:54,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:54,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:31:54,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689383505] [2021-02-21 20:31:54,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:31:54,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:54,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:31:54,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:31:54,390 INFO L87 Difference]: Start difference. First operand 182 states and 237 transitions. Second operand 4 states. [2021-02-21 20:31:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:54,710 INFO L93 Difference]: Finished difference Result 434 states and 597 transitions. [2021-02-21 20:31:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:31:54,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2021-02-21 20:31:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:54,716 INFO L225 Difference]: With dead ends: 434 [2021-02-21 20:31:54,717 INFO L226 Difference]: Without dead ends: 305 [2021-02-21 20:31:54,718 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 [2021-02-21 20:31:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-02-21 20:31:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 303. [2021-02-21 20:31:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2021-02-21 20:31:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 408 transitions. [2021-02-21 20:31:54,825 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 408 transitions. Word has length 82 [2021-02-21 20:31:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:31:54,826 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 408 transitions. [2021-02-21 20:31:54,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:31:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 408 transitions. [2021-02-21 20:31:54,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-21 20:31:54,834 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:54,834 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] [2021-02-21 20:31:54,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:31:54,834 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:54,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:54,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1463383348, now seen corresponding path program 1 times [2021-02-21 20:31:54,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:54,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39796555] [2021-02-21 20:31:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:54,841 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:54,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:54,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:54,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:54,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:55,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:55,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:55,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39796555] [2021-02-21 20:31:55,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:55,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:31:55,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767968183] [2021-02-21 20:31:55,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:31:55,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:55,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:31:55,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:31:55,014 INFO L87 Difference]: Start difference. First operand 303 states and 408 transitions. Second operand 4 states. [2021-02-21 20:31:55,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:55,360 INFO L93 Difference]: Finished difference Result 369 states and 504 transitions. [2021-02-21 20:31:55,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:31:55,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-02-21 20:31:55,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:55,363 INFO L225 Difference]: With dead ends: 369 [2021-02-21 20:31:55,363 INFO L226 Difference]: Without dead ends: 367 [2021-02-21 20:31:55,364 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 [2021-02-21 20:31:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-02-21 20:31:55,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 303. [2021-02-21 20:31:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2021-02-21 20:31:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 406 transitions. [2021-02-21 20:31:55,421 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 406 transitions. Word has length 83 [2021-02-21 20:31:55,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:31:55,421 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 406 transitions. [2021-02-21 20:31:55,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:31:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 406 transitions. [2021-02-21 20:31:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-21 20:31:55,423 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:55,423 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] [2021-02-21 20:31:55,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:31:55,423 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:55,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:55,424 INFO L82 PathProgramCache]: Analyzing trace with hash 185413163, now seen corresponding path program 1 times [2021-02-21 20:31:55,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:55,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306456056] [2021-02-21 20:31:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:55,426 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:55,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:55,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:55,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:55,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:55,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:55,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:55,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:55,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:55,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:55,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306456056] [2021-02-21 20:31:55,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:55,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:31:55,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407711688] [2021-02-21 20:31:55,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:31:55,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:55,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:31:55,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:31:55,513 INFO L87 Difference]: Start difference. First operand 303 states and 406 transitions. Second operand 4 states. [2021-02-21 20:31:55,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:55,868 INFO L93 Difference]: Finished difference Result 791 states and 1096 transitions. [2021-02-21 20:31:55,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:31:55,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-02-21 20:31:55,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:55,872 INFO L225 Difference]: With dead ends: 791 [2021-02-21 20:31:55,872 INFO L226 Difference]: Without dead ends: 541 [2021-02-21 20:31:55,875 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 [2021-02-21 20:31:55,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-02-21 20:31:55,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2021-02-21 20:31:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2021-02-21 20:31:55,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 734 transitions. [2021-02-21 20:31:55,960 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 734 transitions. Word has length 83 [2021-02-21 20:31:55,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:31:55,961 INFO L480 AbstractCegarLoop]: Abstraction has 539 states and 734 transitions. [2021-02-21 20:31:55,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:31:55,961 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 734 transitions. [2021-02-21 20:31:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-21 20:31:55,962 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:55,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:31:55,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:31:55,963 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:55,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:55,963 INFO L82 PathProgramCache]: Analyzing trace with hash -338856829, now seen corresponding path program 1 times [2021-02-21 20:31:55,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:55,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973467604] [2021-02-21 20:31:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:55,966 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:56,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:56,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:56,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:56,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:56,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:56,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:56,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:56,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:56,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:56,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973467604] [2021-02-21 20:31:56,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:56,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:31:56,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257606940] [2021-02-21 20:31:56,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:31:56,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:56,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:31:56,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:31:56,061 INFO L87 Difference]: Start difference. First operand 539 states and 734 transitions. Second operand 4 states. [2021-02-21 20:31:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:56,425 INFO L93 Difference]: Finished difference Result 659 states and 908 transitions. [2021-02-21 20:31:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:31:56,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2021-02-21 20:31:56,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:56,429 INFO L225 Difference]: With dead ends: 659 [2021-02-21 20:31:56,429 INFO L226 Difference]: Without dead ends: 657 [2021-02-21 20:31:56,430 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 [2021-02-21 20:31:56,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-02-21 20:31:56,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 539. [2021-02-21 20:31:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2021-02-21 20:31:56,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 730 transitions. [2021-02-21 20:31:56,514 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 730 transitions. Word has length 84 [2021-02-21 20:31:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:31:56,514 INFO L480 AbstractCegarLoop]: Abstraction has 539 states and 730 transitions. [2021-02-21 20:31:56,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:31:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 730 transitions. [2021-02-21 20:31:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-21 20:31:56,517 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:56,517 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] [2021-02-21 20:31:56,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:31:56,518 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:56,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:56,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1453085437, now seen corresponding path program 1 times [2021-02-21 20:31:56,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:56,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317270999] [2021-02-21 20:31:56,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:56,521 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:56,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:56,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:56,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:56,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:56,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:56,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:56,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:56,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:56,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:56,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317270999] [2021-02-21 20:31:56,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:56,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:31:56,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816636498] [2021-02-21 20:31:56,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:31:56,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:56,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:31:56,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:31:56,649 INFO L87 Difference]: Start difference. First operand 539 states and 730 transitions. Second operand 4 states. [2021-02-21 20:31:57,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:57,053 INFO L93 Difference]: Finished difference Result 1487 states and 2052 transitions. [2021-02-21 20:31:57,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:31:57,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2021-02-21 20:31:57,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:57,059 INFO L225 Difference]: With dead ends: 1487 [2021-02-21 20:31:57,060 INFO L226 Difference]: Without dead ends: 1001 [2021-02-21 20:31:57,062 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 [2021-02-21 20:31:57,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2021-02-21 20:31:57,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 999. [2021-02-21 20:31:57,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2021-02-21 20:31:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1358 transitions. [2021-02-21 20:31:57,211 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1358 transitions. Word has length 84 [2021-02-21 20:31:57,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:31:57,211 INFO L480 AbstractCegarLoop]: Abstraction has 999 states and 1358 transitions. [2021-02-21 20:31:57,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:31:57,212 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1358 transitions. [2021-02-21 20:31:57,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-02-21 20:31:57,213 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:57,213 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] [2021-02-21 20:31:57,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 20:31:57,214 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:57,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:57,214 INFO L82 PathProgramCache]: Analyzing trace with hash 161727264, now seen corresponding path program 1 times [2021-02-21 20:31:57,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:57,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066778715] [2021-02-21 20:31:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:57,217 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:57,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:57,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:57,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:57,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:57,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:57,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:57,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:57,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:57,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:57,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066778715] [2021-02-21 20:31:57,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:57,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:31:57,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955962094] [2021-02-21 20:31:57,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:31:57,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:57,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:31:57,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:31:57,294 INFO L87 Difference]: Start difference. First operand 999 states and 1358 transitions. Second operand 4 states. [2021-02-21 20:31:57,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:57,741 INFO L93 Difference]: Finished difference Result 1219 states and 1672 transitions. [2021-02-21 20:31:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:31:57,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2021-02-21 20:31:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:57,748 INFO L225 Difference]: With dead ends: 1219 [2021-02-21 20:31:57,748 INFO L226 Difference]: Without dead ends: 1217 [2021-02-21 20:31:57,749 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 [2021-02-21 20:31:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-02-21 20:31:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 999. [2021-02-21 20:31:57,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2021-02-21 20:31:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1350 transitions. [2021-02-21 20:31:57,889 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1350 transitions. Word has length 85 [2021-02-21 20:31:57,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:31:57,890 INFO L480 AbstractCegarLoop]: Abstraction has 999 states and 1350 transitions. [2021-02-21 20:31:57,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:31:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1350 transitions. [2021-02-21 20:31:57,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-02-21 20:31:57,891 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:57,892 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] [2021-02-21 20:31:57,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 20:31:57,892 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:57,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:57,893 INFO L82 PathProgramCache]: Analyzing trace with hash 2096220639, now seen corresponding path program 1 times [2021-02-21 20:31:57,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:57,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619451412] [2021-02-21 20:31:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:57,895 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:57,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:57,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:57,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:57,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:57,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:57,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:57,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:57,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:57,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:57,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619451412] [2021-02-21 20:31:57,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:57,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:31:57,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528815406] [2021-02-21 20:31:57,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:31:57,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:57,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:31:57,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:31:57,958 INFO L87 Difference]: Start difference. First operand 999 states and 1350 transitions. Second operand 4 states. [2021-02-21 20:31:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:58,539 INFO L93 Difference]: Finished difference Result 2843 states and 3880 transitions. [2021-02-21 20:31:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:31:58,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2021-02-21 20:31:58,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:58,549 INFO L225 Difference]: With dead ends: 2843 [2021-02-21 20:31:58,549 INFO L226 Difference]: Without dead ends: 1897 [2021-02-21 20:31:58,552 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 [2021-02-21 20:31:58,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2021-02-21 20:31:58,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1895. [2021-02-21 20:31:58,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2021-02-21 20:31:58,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2550 transitions. [2021-02-21 20:31:58,836 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2550 transitions. Word has length 85 [2021-02-21 20:31:58,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:31:58,836 INFO L480 AbstractCegarLoop]: Abstraction has 1895 states and 2550 transitions. [2021-02-21 20:31:58,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:31:58,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2550 transitions. [2021-02-21 20:31:58,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-21 20:31:58,838 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:58,839 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] [2021-02-21 20:31:58,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 20:31:58,839 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:58,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:58,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1500034665, now seen corresponding path program 1 times [2021-02-21 20:31:58,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:58,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737506957] [2021-02-21 20:31:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:58,842 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:58,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:58,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:58,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:58,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:58,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:58,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:58,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:58,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:58,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:58,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737506957] [2021-02-21 20:31:58,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:58,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:31:58,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815274624] [2021-02-21 20:31:58,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:31:58,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:58,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:31:58,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:31:58,905 INFO L87 Difference]: Start difference. First operand 1895 states and 2550 transitions. Second operand 4 states. [2021-02-21 20:31:59,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:59,724 INFO L93 Difference]: Finished difference Result 2299 states and 3112 transitions. [2021-02-21 20:31:59,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:31:59,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-02-21 20:31:59,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:59,735 INFO L225 Difference]: With dead ends: 2299 [2021-02-21 20:31:59,735 INFO L226 Difference]: Without dead ends: 2297 [2021-02-21 20:31:59,736 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 [2021-02-21 20:31:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2021-02-21 20:32:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1895. [2021-02-21 20:32:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2021-02-21 20:32:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2534 transitions. [2021-02-21 20:32:00,074 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2534 transitions. Word has length 86 [2021-02-21 20:32:00,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:00,074 INFO L480 AbstractCegarLoop]: Abstraction has 1895 states and 2534 transitions. [2021-02-21 20:32:00,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:32:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2534 transitions. [2021-02-21 20:32:00,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-21 20:32:00,077 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:00,077 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] [2021-02-21 20:32:00,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 20:32:00,077 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:00,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:00,078 INFO L82 PathProgramCache]: Analyzing trace with hash 558575793, now seen corresponding path program 1 times [2021-02-21 20:32:00,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:00,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610398512] [2021-02-21 20:32:00,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:00,080 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:00,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:00,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:00,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:00,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:00,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:00,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:00,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:00,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:00,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:00,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610398512] [2021-02-21 20:32:00,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:00,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:32:00,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79283744] [2021-02-21 20:32:00,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:32:00,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:00,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:32:00,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:32:00,146 INFO L87 Difference]: Start difference. First operand 1895 states and 2534 transitions. Second operand 4 states. [2021-02-21 20:32:01,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:01,008 INFO L93 Difference]: Finished difference Result 5483 states and 7368 transitions. [2021-02-21 20:32:01,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:32:01,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-02-21 20:32:01,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:01,024 INFO L225 Difference]: With dead ends: 5483 [2021-02-21 20:32:01,024 INFO L226 Difference]: Without dead ends: 3641 [2021-02-21 20:32:01,029 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 [2021-02-21 20:32:01,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2021-02-21 20:32:01,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3639. [2021-02-21 20:32:01,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2021-02-21 20:32:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 4822 transitions. [2021-02-21 20:32:01,560 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 4822 transitions. Word has length 86 [2021-02-21 20:32:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:01,561 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 4822 transitions. [2021-02-21 20:32:01,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:32:01,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 4822 transitions. [2021-02-21 20:32:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-21 20:32:01,564 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:01,564 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] [2021-02-21 20:32:01,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 20:32:01,565 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:01,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:01,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1475046540, now seen corresponding path program 1 times [2021-02-21 20:32:01,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:01,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680188759] [2021-02-21 20:32:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:01,568 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:01,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:01,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:01,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:01,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:01,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:01,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:01,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:01,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:01,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:01,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680188759] [2021-02-21 20:32:01,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:01,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:32:01,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113014727] [2021-02-21 20:32:01,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:32:01,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:01,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:32:01,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:32:01,631 INFO L87 Difference]: Start difference. First operand 3639 states and 4822 transitions. Second operand 4 states. [2021-02-21 20:32:02,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:02,526 INFO L93 Difference]: Finished difference Result 4379 states and 5816 transitions. [2021-02-21 20:32:02,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:32:02,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2021-02-21 20:32:02,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:02,547 INFO L225 Difference]: With dead ends: 4379 [2021-02-21 20:32:02,548 INFO L226 Difference]: Without dead ends: 4377 [2021-02-21 20:32:02,549 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 [2021-02-21 20:32:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2021-02-21 20:32:03,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 3639. [2021-02-21 20:32:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2021-02-21 20:32:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 4790 transitions. [2021-02-21 20:32:03,161 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 4790 transitions. Word has length 87 [2021-02-21 20:32:03,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:03,162 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 4790 transitions. [2021-02-21 20:32:03,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:32:03,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 4790 transitions. [2021-02-21 20:32:03,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-21 20:32:03,165 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:03,165 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] [2021-02-21 20:32:03,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 20:32:03,165 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:03,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:03,166 INFO L82 PathProgramCache]: Analyzing trace with hash 136226195, now seen corresponding path program 1 times [2021-02-21 20:32:03,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:03,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480621193] [2021-02-21 20:32:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:03,168 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:03,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:03,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:03,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:03,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:03,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:03,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:03,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:03,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:03,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:03,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480621193] [2021-02-21 20:32:03,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:03,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:32:03,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687373577] [2021-02-21 20:32:03,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:32:03,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:03,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:32:03,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:32:03,237 INFO L87 Difference]: Start difference. First operand 3639 states and 4790 transitions. Second operand 4 states. [2021-02-21 20:32:04,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:04,346 INFO L93 Difference]: Finished difference Result 10619 states and 14008 transitions. [2021-02-21 20:32:04,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:32:04,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2021-02-21 20:32:04,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:04,378 INFO L225 Difference]: With dead ends: 10619 [2021-02-21 20:32:04,378 INFO L226 Difference]: Without dead ends: 7033 [2021-02-21 20:32:04,388 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 [2021-02-21 20:32:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7033 states. [2021-02-21 20:32:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7033 to 7031. [2021-02-21 20:32:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7031 states. [2021-02-21 20:32:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7031 states to 7031 states and 9142 transitions. [2021-02-21 20:32:05,549 INFO L78 Accepts]: Start accepts. Automaton has 7031 states and 9142 transitions. Word has length 87 [2021-02-21 20:32:05,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:05,550 INFO L480 AbstractCegarLoop]: Abstraction has 7031 states and 9142 transitions. [2021-02-21 20:32:05,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:32:05,550 INFO L276 IsEmpty]: Start isEmpty. Operand 7031 states and 9142 transitions. [2021-02-21 20:32:05,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-21 20:32:05,556 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:05,556 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] [2021-02-21 20:32:05,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-21 20:32:05,557 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:05,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:05,557 INFO L82 PathProgramCache]: Analyzing trace with hash -71709083, now seen corresponding path program 1 times [2021-02-21 20:32:05,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:05,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703411392] [2021-02-21 20:32:05,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:05,560 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:05,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:05,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:05,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:05,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:05,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:05,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:05,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:05,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:05,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:05,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703411392] [2021-02-21 20:32:05,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:05,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:32:05,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819616503] [2021-02-21 20:32:05,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:32:05,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:05,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:32:05,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:32:05,630 INFO L87 Difference]: Start difference. First operand 7031 states and 9142 transitions. Second operand 4 states. [2021-02-21 20:32:07,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:07,478 INFO L93 Difference]: Finished difference Result 20603 states and 26808 transitions. [2021-02-21 20:32:07,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:32:07,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2021-02-21 20:32:07,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:07,518 INFO L225 Difference]: With dead ends: 20603 [2021-02-21 20:32:07,519 INFO L226 Difference]: Without dead ends: 13625 [2021-02-21 20:32:07,538 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 [2021-02-21 20:32:07,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13625 states. [2021-02-21 20:32:09,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13625 to 13623. [2021-02-21 20:32:09,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13623 states. [2021-02-21 20:32:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 17462 transitions. [2021-02-21 20:32:09,234 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 17462 transitions. Word has length 88 [2021-02-21 20:32:09,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:09,234 INFO L480 AbstractCegarLoop]: Abstraction has 13623 states and 17462 transitions. [2021-02-21 20:32:09,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:32:09,234 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 17462 transitions. [2021-02-21 20:32:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-21 20:32:09,242 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:09,242 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] [2021-02-21 20:32:09,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-21 20:32:09,242 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:09,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:09,243 INFO L82 PathProgramCache]: Analyzing trace with hash -700414293, now seen corresponding path program 1 times [2021-02-21 20:32:09,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:09,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952798257] [2021-02-21 20:32:09,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:09,246 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:09,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:09,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:09,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:09,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:09,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:09,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:09,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:09,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:09,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:09,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952798257] [2021-02-21 20:32:09,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:09,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:32:09,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964685801] [2021-02-21 20:32:09,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:32:09,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:09,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:32:09,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:32:09,325 INFO L87 Difference]: Start difference. First operand 13623 states and 17462 transitions. Second operand 4 states. [2021-02-21 20:32:11,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:11,545 INFO L93 Difference]: Finished difference Result 16187 states and 20664 transitions. [2021-02-21 20:32:11,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:32:11,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2021-02-21 20:32:11,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:11,579 INFO L225 Difference]: With dead ends: 16187 [2021-02-21 20:32:11,579 INFO L226 Difference]: Without dead ends: 16185 [2021-02-21 20:32:11,585 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 [2021-02-21 20:32:11,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2021-02-21 20:32:13,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 13623. [2021-02-21 20:32:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13623 states. [2021-02-21 20:32:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 17334 transitions. [2021-02-21 20:32:13,084 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 17334 transitions. Word has length 88 [2021-02-21 20:32:13,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:13,085 INFO L480 AbstractCegarLoop]: Abstraction has 13623 states and 17334 transitions. [2021-02-21 20:32:13,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:32:13,085 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 17334 transitions. [2021-02-21 20:32:13,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-21 20:32:13,094 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:13,094 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] [2021-02-21 20:32:13,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-21 20:32:13,095 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:13,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:13,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1838349256, now seen corresponding path program 1 times [2021-02-21 20:32:13,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:13,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977445528] [2021-02-21 20:32:13,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:13,097 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:13,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:13,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:13,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:13,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:13,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:13,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:13,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:13,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:13,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:13,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977445528] [2021-02-21 20:32:13,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:13,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:32:13,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841681491] [2021-02-21 20:32:13,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:32:13,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:13,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:32:13,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:32:13,154 INFO L87 Difference]: Start difference. First operand 13623 states and 17334 transitions. Second operand 4 states. [2021-02-21 20:32:15,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:15,537 INFO L93 Difference]: Finished difference Result 16059 states and 20280 transitions. [2021-02-21 20:32:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:32:15,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2021-02-21 20:32:15,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:15,571 INFO L225 Difference]: With dead ends: 16059 [2021-02-21 20:32:15,572 INFO L226 Difference]: Without dead ends: 16057 [2021-02-21 20:32:15,579 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 [2021-02-21 20:32:15,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16057 states. [2021-02-21 20:32:17,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16057 to 13623. [2021-02-21 20:32:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13623 states. [2021-02-21 20:32:17,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 17206 transitions. [2021-02-21 20:32:17,461 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 17206 transitions. Word has length 89 [2021-02-21 20:32:17,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:17,461 INFO L480 AbstractCegarLoop]: Abstraction has 13623 states and 17206 transitions. [2021-02-21 20:32:17,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:32:17,462 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 17206 transitions. [2021-02-21 20:32:17,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-21 20:32:17,470 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:17,470 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] [2021-02-21 20:32:17,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-21 20:32:17,471 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:17,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:17,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2072232263, now seen corresponding path program 1 times [2021-02-21 20:32:17,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:17,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769326533] [2021-02-21 20:32:17,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:17,473 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:17,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:17,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:17,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:17,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:17,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:17,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769326533] [2021-02-21 20:32:17,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:17,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:32:17,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030835660] [2021-02-21 20:32:17,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:32:17,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:17,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:32:17,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:32:17,529 INFO L87 Difference]: Start difference. First operand 13623 states and 17206 transitions. Second operand 4 states. [2021-02-21 20:32:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:20,408 INFO L93 Difference]: Finished difference Result 39995 states and 50488 transitions. [2021-02-21 20:32:20,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:32:20,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2021-02-21 20:32:20,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:20,465 INFO L225 Difference]: With dead ends: 39995 [2021-02-21 20:32:20,465 INFO L226 Difference]: Without dead ends: 26425 [2021-02-21 20:32:20,503 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 [2021-02-21 20:32:20,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26425 states. [2021-02-21 20:32:23,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26425 to 26423. [2021-02-21 20:32:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26423 states. [2021-02-21 20:32:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26423 states to 26423 states and 32822 transitions. [2021-02-21 20:32:23,982 INFO L78 Accepts]: Start accepts. Automaton has 26423 states and 32822 transitions. Word has length 89 [2021-02-21 20:32:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:23,983 INFO L480 AbstractCegarLoop]: Abstraction has 26423 states and 32822 transitions. [2021-02-21 20:32:23,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:32:23,983 INFO L276 IsEmpty]: Start isEmpty. Operand 26423 states and 32822 transitions. [2021-02-21 20:32:23,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-21 20:32:23,998 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:23,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:32:23,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-21 20:32:23,998 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:23,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:23,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1064358977, now seen corresponding path program 1 times [2021-02-21 20:32:23,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:23,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955476441] [2021-02-21 20:32:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:24,001 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:24,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:24,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:24,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:24,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:24,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:24,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:24,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:24,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:24,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955476441] [2021-02-21 20:32:24,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:24,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:32:24,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308858636] [2021-02-21 20:32:24,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:32:24,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:24,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:32:24,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:32:24,088 INFO L87 Difference]: Start difference. First operand 26423 states and 32822 transitions. Second operand 4 states. [2021-02-21 20:32:27,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:27,666 INFO L93 Difference]: Finished difference Result 30779 states and 37688 transitions. [2021-02-21 20:32:27,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:32:27,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2021-02-21 20:32:27,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:27,705 INFO L225 Difference]: With dead ends: 30779 [2021-02-21 20:32:27,706 INFO L226 Difference]: Without dead ends: 30777 [2021-02-21 20:32:27,715 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 [2021-02-21 20:32:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30777 states. [2021-02-21 20:32:31,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30777 to 26423. [2021-02-21 20:32:31,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26423 states. [2021-02-21 20:32:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26423 states to 26423 states and 32566 transitions. [2021-02-21 20:32:31,100 INFO L78 Accepts]: Start accepts. Automaton has 26423 states and 32566 transitions. Word has length 90 [2021-02-21 20:32:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:31,100 INFO L480 AbstractCegarLoop]: Abstraction has 26423 states and 32566 transitions. [2021-02-21 20:32:31,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:32:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 26423 states and 32566 transitions. [2021-02-21 20:32:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-21 20:32:31,115 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:31,115 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] [2021-02-21 20:32:31,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-21 20:32:31,115 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:31,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:31,116 INFO L82 PathProgramCache]: Analyzing trace with hash -185062375, now seen corresponding path program 1 times [2021-02-21 20:32:31,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:31,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287954502] [2021-02-21 20:32:31,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:31,118 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:31,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:31,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:31,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:31,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:31,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:31,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:31,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:31,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:31,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:31,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287954502] [2021-02-21 20:32:31,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:31,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:32:31,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71733098] [2021-02-21 20:32:31,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:32:31,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:31,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:32:31,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:32:31,181 INFO L87 Difference]: Start difference. First operand 26423 states and 32566 transitions. Second operand 4 states. [2021-02-21 20:32:37,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:37,384 INFO L93 Difference]: Finished difference Result 77625 states and 95543 transitions. [2021-02-21 20:32:37,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:32:37,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2021-02-21 20:32:37,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:37,414 INFO L225 Difference]: With dead ends: 77625 [2021-02-21 20:32:37,414 INFO L226 Difference]: Without dead ends: 26423 [2021-02-21 20:32:37,487 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 [2021-02-21 20:32:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26423 states. [2021-02-21 20:32:40,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26423 to 26423. [2021-02-21 20:32:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26423 states. [2021-02-21 20:32:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26423 states to 26423 states and 31542 transitions. [2021-02-21 20:32:40,865 INFO L78 Accepts]: Start accepts. Automaton has 26423 states and 31542 transitions. Word has length 90 [2021-02-21 20:32:40,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:40,865 INFO L480 AbstractCegarLoop]: Abstraction has 26423 states and 31542 transitions. [2021-02-21 20:32:40,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:32:40,865 INFO L276 IsEmpty]: Start isEmpty. Operand 26423 states and 31542 transitions. [2021-02-21 20:32:40,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-21 20:32:40,874 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:40,875 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] [2021-02-21 20:32:40,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-21 20:32:40,875 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:40,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:40,875 INFO L82 PathProgramCache]: Analyzing trace with hash -854000612, now seen corresponding path program 1 times [2021-02-21 20:32:40,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:40,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488405963] [2021-02-21 20:32:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:40,878 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:40,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:40,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:40,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:40,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:40,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:40,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:40,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:40,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:40,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:40,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488405963] [2021-02-21 20:32:40,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:40,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:32:40,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450579450] [2021-02-21 20:32:40,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:32:40,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:40,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:32:40,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:32:40,955 INFO L87 Difference]: Start difference. First operand 26423 states and 31542 transitions. Second operand 4 states. [2021-02-21 20:32:44,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:44,078 INFO L93 Difference]: Finished difference Result 26423 states and 31542 transitions. [2021-02-21 20:32:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:32:44,079 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2021-02-21 20:32:44,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:44,079 INFO L225 Difference]: With dead ends: 26423 [2021-02-21 20:32:44,079 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 20:32:44,114 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 [2021-02-21 20:32:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 20:32:44,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 20:32:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 20:32:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 20:32:44,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2021-02-21 20:32:44,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:44,115 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 20:32:44,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:32:44,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 20:32:44,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 20:32:44,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-21 20:32:44,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 20:32:46,779 WARN L202 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 1085 DAG size of output: 65 [2021-02-21 20:32:57,346 WARN L202 SmtUtils]: Spent 10.55 s on a formula simplification. DAG size of input: 2619 DAG size of output: 31 [2021-02-21 20:32:57,902 WARN L202 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 31 [2021-02-21 20:32:59,840 WARN L202 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 1286 DAG size of output: 65 [2021-02-21 20:33:01,403 WARN L202 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 964 DAG size of output: 47 [2021-02-21 20:33:07,291 WARN L202 SmtUtils]: Spent 5.88 s on a formula simplification. DAG size of input: 2308 DAG size of output: 34 [2021-02-21 20:33:09,201 WARN L202 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 1089 DAG size of output: 121 [2021-02-21 20:33:09,519 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 45 [2021-02-21 20:33:17,175 WARN L202 SmtUtils]: Spent 7.65 s on a formula simplification. DAG size of input: 1100 DAG size of output: 581 [2021-02-21 20:33:18,330 WARN L202 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 592 DAG size of output: 191 [2021-02-21 20:33:18,935 WARN L202 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 87 [2021-02-21 20:33:31,180 WARN L202 SmtUtils]: Spent 12.23 s on a formula simplification. DAG size of input: 2793 DAG size of output: 31 [2021-02-21 20:33:35,578 WARN L202 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 1093 DAG size of output: 321 [2021-02-21 20:33:35,971 WARN L202 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 65 [2021-02-21 20:33:39,977 WARN L202 SmtUtils]: Spent 4.00 s on a formula simplification. DAG size of input: 1670 DAG size of output: 53 [2021-02-21 20:33:45,119 WARN L202 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 1540 DAG size of output: 41 [2021-02-21 20:33:51,509 WARN L202 SmtUtils]: Spent 6.38 s on a formula simplification. DAG size of input: 2233 DAG size of output: 31 [2021-02-21 20:34:05,731 WARN L202 SmtUtils]: Spent 14.22 s on a formula simplification that was a NOOP. DAG size: 1097 [2021-02-21 20:34:10,105 WARN L202 SmtUtils]: Spent 4.37 s on a formula simplification. DAG size of input: 1106 DAG size of output: 321 [2021-02-21 20:34:10,810 WARN L202 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 121 [2021-02-21 20:34:11,624 WARN L202 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 123 [2021-02-21 20:34:12,205 WARN L202 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 676 DAG size of output: 67 [2021-02-21 20:34:13,311 WARN L202 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 1079 DAG size of output: 39 [2021-02-21 20:34:28,879 WARN L202 SmtUtils]: Spent 15.55 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-21 20:34:29,975 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 1076 DAG size of output: 31 [2021-02-21 20:34:31,898 WARN L202 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 579 DAG size of output: 321 [2021-02-21 20:34:38,897 WARN L202 SmtUtils]: Spent 6.99 s on a formula simplification. DAG size of input: 2054 DAG size of output: 45 [2021-02-21 20:34:42,751 WARN L202 SmtUtils]: Spent 3.85 s on a formula simplification that was a NOOP. DAG size: 583 [2021-02-21 20:34:48,537 WARN L202 SmtUtils]: Spent 5.78 s on a formula simplification. DAG size of input: 2308 DAG size of output: 34 [2021-02-21 20:35:04,124 WARN L202 SmtUtils]: Spent 15.58 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-21 20:35:05,437 WARN L202 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1083 DAG size of output: 53 [2021-02-21 20:35:16,847 WARN L202 SmtUtils]: Spent 11.40 s on a formula simplification. DAG size of input: 2767 DAG size of output: 31 [2021-02-21 20:35:19,634 WARN L202 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 1118 DAG size of output: 189 [2021-02-21 20:35:20,246 WARN L202 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 87 [2021-02-21 20:35:20,986 WARN L202 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 772 DAG size of output: 55 [2021-02-21 20:35:22,501 WARN L202 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 1087 DAG size of output: 85 [2021-02-21 20:35:26,646 WARN L202 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 1847 DAG size of output: 31 [2021-02-21 20:35:26,952 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 565 DAG size of output: 39 [2021-02-21 20:35:43,825 WARN L202 SmtUtils]: Spent 16.86 s on a formula simplification. DAG size of input: 2822 DAG size of output: 39 [2021-02-21 20:35:45,889 WARN L202 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 586 DAG size of output: 323 [2021-02-21 20:36:00,394 WARN L202 SmtUtils]: Spent 14.49 s on a formula simplification. DAG size of input: 2815 DAG size of output: 31 [2021-02-21 20:36:02,936 WARN L202 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 1091 DAG size of output: 189 [2021-02-21 20:36:03,322 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 53 [2021-02-21 20:36:05,354 WARN L202 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 1142 DAG size of output: 121 [2021-02-21 20:36:05,938 WARN L202 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 676 DAG size of output: 67 [2021-02-21 20:36:07,391 WARN L202 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 964 DAG size of output: 47 [2021-02-21 20:36:17,793 WARN L202 SmtUtils]: Spent 10.39 s on a formula simplification. DAG size of input: 2717 DAG size of output: 31 [2021-02-21 20:36:25,220 WARN L202 SmtUtils]: Spent 7.42 s on a formula simplification. DAG size of input: 1095 DAG size of output: 581 [2021-02-21 20:36:25,711 WARN L202 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 573 DAG size of output: 85 [2021-02-21 20:36:29,482 WARN L202 SmtUtils]: Spent 3.77 s on a formula simplification that was a NOOP. DAG size: 583 [2021-02-21 20:36:45,072 WARN L202 SmtUtils]: Spent 15.58 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-21 20:36:46,209 WARN L202 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 592 DAG size of output: 191 [2021-02-21 20:37:01,747 WARN L202 SmtUtils]: Spent 15.53 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-21 20:37:17,200 WARN L202 SmtUtils]: Spent 15.44 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-21 20:37:32,660 WARN L202 SmtUtils]: Spent 15.45 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-21 20:37:33,795 WARN L202 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 1076 DAG size of output: 31 [2021-02-21 20:37:34,809 WARN L202 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 577 DAG size of output: 189 [2021-02-21 20:37:36,514 WARN L202 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 1190 DAG size of output: 85 [2021-02-21 20:37:37,272 WARN L202 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 772 DAG size of output: 55 [2021-02-21 20:37:42,496 WARN L202 SmtUtils]: Spent 5.22 s on a formula simplification. DAG size of input: 1540 DAG size of output: 41 [2021-02-21 20:37:43,664 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 1081 DAG size of output: 45 [2021-02-21 20:37:57,131 WARN L202 SmtUtils]: Spent 13.46 s on a formula simplification. DAG size of input: 2807 DAG size of output: 31 [2021-02-21 20:38:00,819 WARN L202 SmtUtils]: Spent 3.68 s on a formula simplification that was a NOOP. DAG size: 581 [2021-02-21 20:38:02,910 WARN L202 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 586 DAG size of output: 323 [2021-02-21 20:38:03,724 WARN L202 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 123 [2021-02-21 20:38:04,235 WARN L202 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-02-21 20:38:04,747 WARN L202 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-02-21 20:38:04,875 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2021-02-21 20:38:07,979 WARN L202 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2021-02-21 20:38:08,083 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15 [2021-02-21 20:39:24,311 WARN L202 SmtUtils]: Spent 1.27 m on a formula simplification. DAG size of input: 571 DAG size of output: 551 [2021-02-21 20:39:33,297 WARN L202 SmtUtils]: Spent 8.98 s on a formula simplification. DAG size of input: 181 DAG size of output: 161 [2021-02-21 20:39:34,701 WARN L202 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-02-21 20:39:58,338 WARN L202 SmtUtils]: Spent 23.62 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2021-02-21 20:39:58,865 WARN L202 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-02-21 20:39:59,098 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2021-02-21 20:44:19,664 WARN L202 SmtUtils]: Spent 4.34 m on a formula simplification. DAG size of input: 1087 DAG size of output: 1067 [2021-02-21 20:44:43,194 WARN L202 SmtUtils]: Spent 23.52 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2021-02-21 20:44:46,287 WARN L202 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2021-02-21 20:44:49,734 WARN L202 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2021-02-21 20:44:50,337 WARN L202 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-02-21 20:45:14,103 WARN L202 SmtUtils]: Spent 23.70 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2021-02-21 20:45:14,208 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15