/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/eureka_01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 06:44:44,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 06:44:44,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 06:44:44,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-16 06:44:44,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 06:44:44,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 06:44:44,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 06:44:44,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 06:44:44,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 06:44:44,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 06:44:44,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 06:44:44,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 06:44:44,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 06:44:44,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 06:44:44,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 06:44:44,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 06:44:44,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 06:44:44,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 06:44:44,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 06:44:44,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 06:44:44,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 06:44:44,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 06:44:44,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 06:44:44,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 06:44:44,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 06:44:44,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 06:44:44,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 06:44:44,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 06:44:44,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 06:44:44,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 06:44:44,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 06:44:44,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 06:44:44,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 06:44:44,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 06:44:44,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 06:44:44,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 06:44:44,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 06:44:44,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 06:44:44,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 06:44:44,407 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 06:44:44,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 06:44:44,407 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 06:44:44,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 06:44:44,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 06:44:44,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 06:44:44,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 06:44:44,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 06:44:44,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:44:44,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 06:44:44,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 06:44:44,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 06:44:44,408 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 06:44:44,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 06:44:44,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 06:44:44,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 06:44:44,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 06:44:44,686 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 06:44:44,687 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 06:44:44,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01-2.c [2021-04-16 06:44:44,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2c97af86/4e5963079fce4e86835192cfe16b7587/FLAG230f32cc9 [2021-04-16 06:44:45,144 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 06:44:45,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c [2021-04-16 06:44:45,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2c97af86/4e5963079fce4e86835192cfe16b7587/FLAG230f32cc9 [2021-04-16 06:44:45,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2c97af86/4e5963079fce4e86835192cfe16b7587 [2021-04-16 06:44:45,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 06:44:45,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 06:44:45,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 06:44:45,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 06:44:45,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 06:44:45,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:44:45" (1/1) ... [2021-04-16 06:44:45,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c3882b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:45, skipping insertion in model container [2021-04-16 06:44:45,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:44:45" (1/1) ... [2021-04-16 06:44:45,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 06:44:45,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 06:44:45,680 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c[323,336] [2021-04-16 06:44:45,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:44:45,711 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 06:44:45,718 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c[323,336] [2021-04-16 06:44:45,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:44:45,749 INFO L208 MainTranslator]: Completed translation [2021-04-16 06:44:45,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:45 WrapperNode [2021-04-16 06:44:45,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 06:44:45,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 06:44:45,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 06:44:45,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 06:44:45,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:45" (1/1) ... [2021-04-16 06:44:45,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:45" (1/1) ... [2021-04-16 06:44:45,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:45" (1/1) ... [2021-04-16 06:44:45,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:45" (1/1) ... [2021-04-16 06:44:45,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:45" (1/1) ... [2021-04-16 06:44:45,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:45" (1/1) ... [2021-04-16 06:44:45,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:45" (1/1) ... [2021-04-16 06:44:45,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 06:44:45,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 06:44:45,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 06:44:45,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 06:44:45,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:45" (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 [2021-04-16 06:44:45,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 06:44:45,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 06:44:45,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 06:44:45,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 06:44:45,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 06:44:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 06:44:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 06:44:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 06:44:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 06:44:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 06:44:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 06:44:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 06:44:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 06:44:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 06:44:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 06:44:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 06:44:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 06:44:46,164 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 06:44:46,164 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-04-16 06:44:46,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:44:46 BoogieIcfgContainer [2021-04-16 06:44:46,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 06:44:46,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 06:44:46,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 06:44:46,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 06:44:46,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 06:44:45" (1/3) ... [2021-04-16 06:44:46,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465a7d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:44:46, skipping insertion in model container [2021-04-16 06:44:46,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:44:45" (2/3) ... [2021-04-16 06:44:46,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465a7d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:44:46, skipping insertion in model container [2021-04-16 06:44:46,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:44:46" (3/3) ... [2021-04-16 06:44:46,170 INFO L111 eAbstractionObserver]: Analyzing ICFG eureka_01-2.c [2021-04-16 06:44:46,174 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 06:44:46,176 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 06:44:46,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 06:44:46,212 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 06:44:46,212 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 06:44:46,212 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 06:44:46,212 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 06:44:46,213 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 06:44:46,213 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 06:44:46,213 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 06:44:46,213 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 06:44:46,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:44:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-16 06:44:46,229 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:46,230 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:46,230 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:46,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:46,234 INFO L82 PathProgramCache]: Analyzing trace with hash -10776725, now seen corresponding path program 1 times [2021-04-16 06:44:46,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:46,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629424899] [2021-04-16 06:44:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:46,280 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:46,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:46,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:46,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:46,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:46,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:46,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:46,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:46,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629424899] [2021-04-16 06:44:46,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:46,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 06:44:46,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264890203] [2021-04-16 06:44:46,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 06:44:46,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:46,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 06:44:46,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:44:46,461 INFO L87 Difference]: Start difference. First operand has 35 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:46,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:46,557 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2021-04-16 06:44:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 06:44:46,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-04-16 06:44:46,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:46,562 INFO L225 Difference]: With dead ends: 61 [2021-04-16 06:44:46,562 INFO L226 Difference]: Without dead ends: 30 [2021-04-16 06:44:46,564 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:44:46,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-04-16 06:44:46,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-04-16 06:44:46,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:46,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-04-16 06:44:46,608 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 17 [2021-04-16 06:44:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:46,609 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-04-16 06:44:46,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:46,610 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-04-16 06:44:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-16 06:44:46,610 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:46,610 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:46,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 06:44:46,611 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:46,612 INFO L82 PathProgramCache]: Analyzing trace with hash -2004250474, now seen corresponding path program 1 times [2021-04-16 06:44:46,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:46,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314604203] [2021-04-16 06:44:46,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:46,625 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:46,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:46,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:46,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:46,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:46,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:46,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:46,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:46,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:46,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:46,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314604203] [2021-04-16 06:44:46,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:46,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 06:44:46,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435442666] [2021-04-16 06:44:46,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 06:44:46,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:46,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 06:44:46,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 06:44:46,727 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:46,808 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2021-04-16 06:44:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-16 06:44:46,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-04-16 06:44:46,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:46,811 INFO L225 Difference]: With dead ends: 54 [2021-04-16 06:44:46,811 INFO L226 Difference]: Without dead ends: 33 [2021-04-16 06:44:46,812 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 06:44:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-04-16 06:44:46,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-04-16 06:44:46,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-04-16 06:44:46,826 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 17 [2021-04-16 06:44:46,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:46,826 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-04-16 06:44:46,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:46,827 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2021-04-16 06:44:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-16 06:44:46,827 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:46,827 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:46,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 06:44:46,827 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:46,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:46,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1025073247, now seen corresponding path program 1 times [2021-04-16 06:44:46,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:46,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246454951] [2021-04-16 06:44:46,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:46,843 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:46,845 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:46,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:46,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:46,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:46,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:46,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:46,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:46,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:46,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:46,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:46,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:46,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:46,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246454951] [2021-04-16 06:44:46,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:46,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:44:46,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742885272] [2021-04-16 06:44:46,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:44:46,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:46,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:44:46,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:44:46,940 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:47,013 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2021-04-16 06:44:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:44:47,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-04-16 06:44:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:47,016 INFO L225 Difference]: With dead ends: 61 [2021-04-16 06:44:47,016 INFO L226 Difference]: Without dead ends: 46 [2021-04-16 06:44:47,016 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:44:47,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-04-16 06:44:47,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32. [2021-04-16 06:44:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:47,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-04-16 06:44:47,034 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 20 [2021-04-16 06:44:47,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:47,034 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-04-16 06:44:47,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,035 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-04-16 06:44:47,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-16 06:44:47,038 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:47,038 INFO L519 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] [2021-04-16 06:44:47,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-16 06:44:47,038 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:47,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:47,038 INFO L82 PathProgramCache]: Analyzing trace with hash -315835948, now seen corresponding path program 1 times [2021-04-16 06:44:47,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:47,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695589306] [2021-04-16 06:44:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:47,042 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:47,043 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:47,101 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:47,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:47,108 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:47,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:47,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695589306] [2021-04-16 06:44:47,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:47,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:44:47,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897927089] [2021-04-16 06:44:47,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:44:47,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:47,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:44:47,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:44:47,142 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:47,216 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2021-04-16 06:44:47,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:44:47,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-04-16 06:44:47,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:47,218 INFO L225 Difference]: With dead ends: 55 [2021-04-16 06:44:47,218 INFO L226 Difference]: Without dead ends: 35 [2021-04-16 06:44:47,219 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:44:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-04-16 06:44:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-04-16 06:44:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:47,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2021-04-16 06:44:47,228 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 23 [2021-04-16 06:44:47,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:47,228 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2021-04-16 06:44:47,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,228 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2021-04-16 06:44:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-04-16 06:44:47,229 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:47,229 INFO L519 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] [2021-04-16 06:44:47,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-16 06:44:47,229 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:47,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:47,229 INFO L82 PathProgramCache]: Analyzing trace with hash -873463802, now seen corresponding path program 1 times [2021-04-16 06:44:47,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:47,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456043200] [2021-04-16 06:44:47,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:47,233 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:47,234 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:47,286 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:47,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:47,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:47,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456043200] [2021-04-16 06:44:47,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:47,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:44:47,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483836649] [2021-04-16 06:44:47,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:44:47,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:47,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:44:47,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:44:47,331 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:47,437 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2021-04-16 06:44:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:44:47,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-04-16 06:44:47,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:47,453 INFO L225 Difference]: With dead ends: 58 [2021-04-16 06:44:47,453 INFO L226 Difference]: Without dead ends: 47 [2021-04-16 06:44:47,455 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:44:47,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-04-16 06:44:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2021-04-16 06:44:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-04-16 06:44:47,459 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 26 [2021-04-16 06:44:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:47,460 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-04-16 06:44:47,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,460 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-04-16 06:44:47,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-04-16 06:44:47,460 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:47,461 INFO L519 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] [2021-04-16 06:44:47,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-16 06:44:47,461 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:47,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:47,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1835268693, now seen corresponding path program 1 times [2021-04-16 06:44:47,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:47,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100916442] [2021-04-16 06:44:47,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:47,464 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:47,465 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:47,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:47,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:47,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100916442] [2021-04-16 06:44:47,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:47,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:44:47,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127044014] [2021-04-16 06:44:47,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:44:47,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:47,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:44:47,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:44:47,519 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:47,588 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2021-04-16 06:44:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:44:47,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-04-16 06:44:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:47,591 INFO L225 Difference]: With dead ends: 63 [2021-04-16 06:44:47,591 INFO L226 Difference]: Without dead ends: 39 [2021-04-16 06:44:47,592 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:44:47,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-04-16 06:44:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-04-16 06:44:47,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:47,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-04-16 06:44:47,601 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 29 [2021-04-16 06:44:47,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:47,601 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-04-16 06:44:47,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-04-16 06:44:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-04-16 06:44:47,602 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:47,602 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:47,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-16 06:44:47,602 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:47,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:47,603 INFO L82 PathProgramCache]: Analyzing trace with hash 533557236, now seen corresponding path program 2 times [2021-04-16 06:44:47,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:47,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789159725] [2021-04-16 06:44:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:47,607 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:47,609 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:47,658 INFO L142 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size [2021-04-16 06:44:47,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 06:44:47,664 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-04-16 06:44:47,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:47,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789159725] [2021-04-16 06:44:47,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:47,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:44:47,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107908875] [2021-04-16 06:44:47,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:44:47,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:47,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:44:47,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:44:47,697 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:47,763 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2021-04-16 06:44:47,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:44:47,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-04-16 06:44:47,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:47,764 INFO L225 Difference]: With dead ends: 68 [2021-04-16 06:44:47,764 INFO L226 Difference]: Without dead ends: 39 [2021-04-16 06:44:47,764 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:44:47,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-04-16 06:44:47,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-04-16 06:44:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:47,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2021-04-16 06:44:47,778 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 32 [2021-04-16 06:44:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:47,780 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2021-04-16 06:44:47,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,781 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2021-04-16 06:44:47,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-04-16 06:44:47,783 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:47,783 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:47,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-16 06:44:47,783 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:47,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:47,784 INFO L82 PathProgramCache]: Analyzing trace with hash 752411954, now seen corresponding path program 1 times [2021-04-16 06:44:47,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:47,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795816349] [2021-04-16 06:44:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:47,789 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:47,790 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:47,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:47,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:47,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:47,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795816349] [2021-04-16 06:44:47,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:47,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 06:44:47,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020633793] [2021-04-16 06:44:47,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 06:44:47,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:47,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 06:44:47,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:44:47,867 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:47,928 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2021-04-16 06:44:47,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-16 06:44:47,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-04-16 06:44:47,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:47,930 INFO L225 Difference]: With dead ends: 66 [2021-04-16 06:44:47,930 INFO L226 Difference]: Without dead ends: 42 [2021-04-16 06:44:47,930 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:44:47,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-04-16 06:44:47,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-04-16 06:44:47,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:47,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2021-04-16 06:44:47,943 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 32 [2021-04-16 06:44:47,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:47,943 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2021-04-16 06:44:47,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:47,944 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2021-04-16 06:44:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-04-16 06:44:47,948 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:47,948 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:47,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-16 06:44:47,948 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:47,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:47,948 INFO L82 PathProgramCache]: Analyzing trace with hash -240283891, now seen corresponding path program 2 times [2021-04-16 06:44:47,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:47,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401434517] [2021-04-16 06:44:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:47,956 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:47,957 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:47,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:47,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:47,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:48,002 INFO L142 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-04-16 06:44:48,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:44:48,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:48,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:48,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:48,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:48,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401434517] [2021-04-16 06:44:48,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:48,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:44:48,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703023008] [2021-04-16 06:44:48,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:44:48,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:48,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:44:48,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:44:48,052 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:48,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:48,157 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2021-04-16 06:44:48,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-16 06:44:48,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-04-16 06:44:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:48,158 INFO L225 Difference]: With dead ends: 93 [2021-04-16 06:44:48,159 INFO L226 Difference]: Without dead ends: 69 [2021-04-16 06:44:48,159 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 53.0ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:44:48,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-04-16 06:44:48,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 46. [2021-04-16 06:44:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:48,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2021-04-16 06:44:48,165 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 35 [2021-04-16 06:44:48,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:48,166 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2021-04-16 06:44:48,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:48,166 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2021-04-16 06:44:48,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-04-16 06:44:48,167 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:48,167 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:48,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-16 06:44:48,167 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:48,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:48,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1283680124, now seen corresponding path program 3 times [2021-04-16 06:44:48,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:48,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868725140] [2021-04-16 06:44:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:48,175 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:48,177 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:48,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:48,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:48,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:48,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:48,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:48,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:48,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868725140] [2021-04-16 06:44:48,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:48,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:44:48,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458642145] [2021-04-16 06:44:48,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:44:48,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:48,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:44:48,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:44:48,258 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:48,378 INFO L93 Difference]: Finished difference Result 86 states and 103 transitions. [2021-04-16 06:44:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 06:44:48,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-04-16 06:44:48,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:48,379 INFO L225 Difference]: With dead ends: 86 [2021-04-16 06:44:48,379 INFO L226 Difference]: Without dead ends: 56 [2021-04-16 06:44:48,379 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:44:48,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-04-16 06:44:48,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2021-04-16 06:44:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 43 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-04-16 06:44:48,383 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 41 [2021-04-16 06:44:48,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:48,383 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-04-16 06:44:48,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:48,383 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-04-16 06:44:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-04-16 06:44:48,384 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:48,384 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:48,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-16 06:44:48,384 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:48,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:48,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1817586423, now seen corresponding path program 4 times [2021-04-16 06:44:48,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:48,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890905885] [2021-04-16 06:44:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:48,392 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:48,394 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:48,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:48,438 INFO L142 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-04-16 06:44:48,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:44:48,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:48,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:48,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:48,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:48,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:48,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890905885] [2021-04-16 06:44:48,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:48,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-16 06:44:48,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129817595] [2021-04-16 06:44:48,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-16 06:44:48,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:48,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-16 06:44:48,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:44:48,484 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:48,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:48,610 INFO L93 Difference]: Finished difference Result 119 states and 147 transitions. [2021-04-16 06:44:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 06:44:48,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-04-16 06:44:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:48,612 INFO L225 Difference]: With dead ends: 119 [2021-04-16 06:44:48,612 INFO L226 Difference]: Without dead ends: 89 [2021-04-16 06:44:48,613 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 54.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:44:48,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-04-16 06:44:48,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 55. [2021-04-16 06:44:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2021-04-16 06:44:48,619 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 44 [2021-04-16 06:44:48,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:48,619 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2021-04-16 06:44:48,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:48,619 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2021-04-16 06:44:48,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-04-16 06:44:48,619 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:48,619 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:48,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-04-16 06:44:48,619 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:48,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:48,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1321273796, now seen corresponding path program 5 times [2021-04-16 06:44:48,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:48,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196048130] [2021-04-16 06:44:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:48,626 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:48,626 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:48,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:48,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:48,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:48,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:48,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:48,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:48,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:48,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196048130] [2021-04-16 06:44:48,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:48,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-16 06:44:48,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964346487] [2021-04-16 06:44:48,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-16 06:44:48,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:48,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-16 06:44:48,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:44:48,687 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:48,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:48,789 INFO L93 Difference]: Finished difference Result 106 states and 129 transitions. [2021-04-16 06:44:48,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:44:48,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-04-16 06:44:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:48,789 INFO L225 Difference]: With dead ends: 106 [2021-04-16 06:44:48,789 INFO L226 Difference]: Without dead ends: 70 [2021-04-16 06:44:48,790 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 32.5ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:44:48,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-04-16 06:44:48,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2021-04-16 06:44:48,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.25) internal successors, (65), 52 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2021-04-16 06:44:48,800 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 50 [2021-04-16 06:44:48,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:48,801 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2021-04-16 06:44:48,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:48,802 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2021-04-16 06:44:48,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-04-16 06:44:48,802 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:48,802 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:48,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-04-16 06:44:48,802 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:48,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:48,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1910444767, now seen corresponding path program 6 times [2021-04-16 06:44:48,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:48,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711914760] [2021-04-16 06:44:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:48,809 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:48,811 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:48,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:48,848 INFO L142 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-04-16 06:44:48,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 06:44:48,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:48,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:48,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:48,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:48,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:48,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:48,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:48,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711914760] [2021-04-16 06:44:48,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:48,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:44:48,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393766693] [2021-04-16 06:44:48,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:44:48,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:48,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:44:48,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:44:48,901 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:49,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:49,063 INFO L93 Difference]: Finished difference Result 145 states and 181 transitions. [2021-04-16 06:44:49,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:44:49,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-04-16 06:44:49,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:49,065 INFO L225 Difference]: With dead ends: 145 [2021-04-16 06:44:49,065 INFO L226 Difference]: Without dead ends: 109 [2021-04-16 06:44:49,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 70.3ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:44:49,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-04-16 06:44:49,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 64. [2021-04-16 06:44:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 58 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2021-04-16 06:44:49,071 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 53 [2021-04-16 06:44:49,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:49,071 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2021-04-16 06:44:49,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:49,072 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2021-04-16 06:44:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-04-16 06:44:49,072 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:49,072 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:49,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-04-16 06:44:49,072 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:49,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:49,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1365869398, now seen corresponding path program 7 times [2021-04-16 06:44:49,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:49,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635499358] [2021-04-16 06:44:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:49,081 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:49,082 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:49,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:49,115 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,120 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,125 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:49,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:49,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:49,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635499358] [2021-04-16 06:44:49,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:49,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 06:44:49,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65234313] [2021-04-16 06:44:49,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 06:44:49,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:49,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 06:44:49,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:44:49,148 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:49,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:49,200 INFO L93 Difference]: Finished difference Result 120 states and 154 transitions. [2021-04-16 06:44:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-16 06:44:49,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-04-16 06:44:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:49,201 INFO L225 Difference]: With dead ends: 120 [2021-04-16 06:44:49,201 INFO L226 Difference]: Without dead ends: 84 [2021-04-16 06:44:49,201 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 24.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:44:49,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-04-16 06:44:49,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2021-04-16 06:44:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 70 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2021-04-16 06:44:49,208 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 59 [2021-04-16 06:44:49,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:49,208 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2021-04-16 06:44:49,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:49,208 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2021-04-16 06:44:49,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-04-16 06:44:49,209 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:49,209 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:49,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-04-16 06:44:49,209 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:49,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:49,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2115991730, now seen corresponding path program 8 times [2021-04-16 06:44:49,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:49,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111512779] [2021-04-16 06:44:49,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:49,216 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:49,217 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:49,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:49,254 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,259 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,264 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,270 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:49,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:49,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:49,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111512779] [2021-04-16 06:44:49,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:49,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:44:49,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668605312] [2021-04-16 06:44:49,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:44:49,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:49,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:44:49,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:44:49,293 INFO L87 Difference]: Start difference. First operand 76 states and 94 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:49,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:49,366 INFO L93 Difference]: Finished difference Result 141 states and 182 transitions. [2021-04-16 06:44:49,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 06:44:49,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-04-16 06:44:49,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:49,368 INFO L225 Difference]: With dead ends: 141 [2021-04-16 06:44:49,368 INFO L226 Difference]: Without dead ends: 96 [2021-04-16 06:44:49,370 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:44:49,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-04-16 06:44:49,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2021-04-16 06:44:49,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 82 states have (on average 1.2804878048780488) internal successors, (105), 82 states have internal predecessors, (105), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2021-04-16 06:44:49,377 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 71 [2021-04-16 06:44:49,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:49,377 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2021-04-16 06:44:49,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:49,378 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2021-04-16 06:44:49,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-04-16 06:44:49,378 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:49,378 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:49,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-04-16 06:44:49,378 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:49,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:49,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1359309354, now seen corresponding path program 9 times [2021-04-16 06:44:49,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:49,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407513510] [2021-04-16 06:44:49,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:49,385 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:49,385 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:49,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:49,437 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,444 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,450 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,456 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,462 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:49,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:49,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:49,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407513510] [2021-04-16 06:44:49,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:49,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-16 06:44:49,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968088275] [2021-04-16 06:44:49,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-16 06:44:49,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:49,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-16 06:44:49,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:44:49,485 INFO L87 Difference]: Start difference. First operand 88 states and 110 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:49,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:49,569 INFO L93 Difference]: Finished difference Result 162 states and 210 transitions. [2021-04-16 06:44:49,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:44:49,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2021-04-16 06:44:49,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:49,570 INFO L225 Difference]: With dead ends: 162 [2021-04-16 06:44:49,570 INFO L226 Difference]: Without dead ends: 108 [2021-04-16 06:44:49,571 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:44:49,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-04-16 06:44:49,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2021-04-16 06:44:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 94 states have internal predecessors, (121), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 126 transitions. [2021-04-16 06:44:49,580 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 126 transitions. Word has length 83 [2021-04-16 06:44:49,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:49,580 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 126 transitions. [2021-04-16 06:44:49,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:49,581 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 126 transitions. [2021-04-16 06:44:49,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-04-16 06:44:49,584 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:49,584 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:49,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-04-16 06:44:49,584 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:49,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:49,584 INFO L82 PathProgramCache]: Analyzing trace with hash 346337586, now seen corresponding path program 10 times [2021-04-16 06:44:49,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:49,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550340947] [2021-04-16 06:44:49,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:49,590 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:49,591 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:49,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:49,653 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,657 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,662 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,669 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,675 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,681 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:49,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:49,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:49,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550340947] [2021-04-16 06:44:49,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:49,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:44:49,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304384802] [2021-04-16 06:44:49,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:44:49,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:49,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:44:49,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:44:49,699 INFO L87 Difference]: Start difference. First operand 100 states and 126 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:49,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:49,774 INFO L93 Difference]: Finished difference Result 183 states and 238 transitions. [2021-04-16 06:44:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:44:49,774 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-04-16 06:44:49,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:49,775 INFO L225 Difference]: With dead ends: 183 [2021-04-16 06:44:49,775 INFO L226 Difference]: Without dead ends: 120 [2021-04-16 06:44:49,776 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:44:49,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-04-16 06:44:49,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2021-04-16 06:44:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 106 states have (on average 1.2924528301886793) internal successors, (137), 106 states have internal predecessors, (137), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:49,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 142 transitions. [2021-04-16 06:44:49,785 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 142 transitions. Word has length 95 [2021-04-16 06:44:49,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:49,785 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 142 transitions. [2021-04-16 06:44:49,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:49,785 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 142 transitions. [2021-04-16 06:44:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-04-16 06:44:49,786 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:49,786 INFO L519 BasicCegarLoop]: trace histogram [20, 20, 20, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:49,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-04-16 06:44:49,786 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:49,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:49,786 INFO L82 PathProgramCache]: Analyzing trace with hash -8943530, now seen corresponding path program 11 times [2021-04-16 06:44:49,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:49,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553823971] [2021-04-16 06:44:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:49,793 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:49,794 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:49,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:49,863 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,868 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,873 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,879 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,886 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,892 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:49,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:49,901 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:49,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:49,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:49,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:49,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553823971] [2021-04-16 06:44:49,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:49,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:44:49,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613890604] [2021-04-16 06:44:49,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:44:49,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:49,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:44:49,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:44:49,921 INFO L87 Difference]: Start difference. First operand 112 states and 142 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:50,010 INFO L93 Difference]: Finished difference Result 204 states and 266 transitions. [2021-04-16 06:44:50,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:44:50,011 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2021-04-16 06:44:50,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:50,012 INFO L225 Difference]: With dead ends: 204 [2021-04-16 06:44:50,012 INFO L226 Difference]: Without dead ends: 132 [2021-04-16 06:44:50,012 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:44:50,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-04-16 06:44:50,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2021-04-16 06:44:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 118 states have (on average 1.2966101694915255) internal successors, (153), 118 states have internal predecessors, (153), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 158 transitions. [2021-04-16 06:44:50,024 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 158 transitions. Word has length 107 [2021-04-16 06:44:50,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:50,025 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 158 transitions. [2021-04-16 06:44:50,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 158 transitions. [2021-04-16 06:44:50,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-04-16 06:44:50,025 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:50,025 INFO L519 BasicCegarLoop]: trace histogram [24, 24, 24, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:50,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-04-16 06:44:50,026 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:50,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1834710606, now seen corresponding path program 12 times [2021-04-16 06:44:50,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:50,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205931647] [2021-04-16 06:44:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:50,032 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:50,033 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:50,094 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,099 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,109 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,115 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,121 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,129 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,137 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,146 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:50,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:50,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205931647] [2021-04-16 06:44:50,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:50,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:44:50,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996639493] [2021-04-16 06:44:50,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:44:50,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:50,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:44:50,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:44:50,167 INFO L87 Difference]: Start difference. First operand 124 states and 158 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:50,249 INFO L93 Difference]: Finished difference Result 225 states and 294 transitions. [2021-04-16 06:44:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:44:50,249 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2021-04-16 06:44:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:50,250 INFO L225 Difference]: With dead ends: 225 [2021-04-16 06:44:50,250 INFO L226 Difference]: Without dead ends: 144 [2021-04-16 06:44:50,251 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 55.3ms TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:44:50,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-04-16 06:44:50,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 136. [2021-04-16 06:44:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 130 states have (on average 1.3) internal successors, (169), 130 states have internal predecessors, (169), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:50,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 174 transitions. [2021-04-16 06:44:50,261 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 174 transitions. Word has length 119 [2021-04-16 06:44:50,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:50,262 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 174 transitions. [2021-04-16 06:44:50,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 174 transitions. [2021-04-16 06:44:50,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-04-16 06:44:50,263 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:50,263 INFO L519 BasicCegarLoop]: trace histogram [28, 28, 28, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:50,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-04-16 06:44:50,263 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:50,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:50,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1613781718, now seen corresponding path program 13 times [2021-04-16 06:44:50,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:50,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013995434] [2021-04-16 06:44:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:50,269 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:50,270 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:50,326 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,330 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,335 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,340 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,346 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,354 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,362 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,371 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,380 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:50,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:50,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013995434] [2021-04-16 06:44:50,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:50,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-04-16 06:44:50,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893979011] [2021-04-16 06:44:50,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-16 06:44:50,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:50,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-16 06:44:50,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:44:50,402 INFO L87 Difference]: Start difference. First operand 136 states and 174 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:50,506 INFO L93 Difference]: Finished difference Result 246 states and 322 transitions. [2021-04-16 06:44:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 06:44:50,506 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131 [2021-04-16 06:44:50,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:50,507 INFO L225 Difference]: With dead ends: 246 [2021-04-16 06:44:50,507 INFO L226 Difference]: Without dead ends: 156 [2021-04-16 06:44:50,507 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 62.4ms TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:44:50,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-04-16 06:44:50,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 148. [2021-04-16 06:44:50,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 142 states have (on average 1.3028169014084507) internal successors, (185), 142 states have internal predecessors, (185), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 190 transitions. [2021-04-16 06:44:50,520 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 190 transitions. Word has length 131 [2021-04-16 06:44:50,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:50,521 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 190 transitions. [2021-04-16 06:44:50,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,521 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 190 transitions. [2021-04-16 06:44:50,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-04-16 06:44:50,521 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:50,522 INFO L519 BasicCegarLoop]: trace histogram [32, 32, 32, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:50,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-04-16 06:44:50,522 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:50,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:50,522 INFO L82 PathProgramCache]: Analyzing trace with hash -2096168398, now seen corresponding path program 14 times [2021-04-16 06:44:50,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:50,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646043497] [2021-04-16 06:44:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:50,530 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:50,531 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:50,610 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,614 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,619 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,625 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,633 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,640 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,648 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,660 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,670 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,679 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:50,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:50,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646043497] [2021-04-16 06:44:50,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:50,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:44:50,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255312774] [2021-04-16 06:44:50,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:44:50,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:50,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:44:50,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:44:50,702 INFO L87 Difference]: Start difference. First operand 148 states and 190 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:50,797 INFO L93 Difference]: Finished difference Result 267 states and 350 transitions. [2021-04-16 06:44:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:44:50,797 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2021-04-16 06:44:50,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:50,798 INFO L225 Difference]: With dead ends: 267 [2021-04-16 06:44:50,798 INFO L226 Difference]: Without dead ends: 168 [2021-04-16 06:44:50,799 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 77.7ms TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:44:50,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-04-16 06:44:50,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 160. [2021-04-16 06:44:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 154 states have (on average 1.3051948051948052) internal successors, (201), 154 states have internal predecessors, (201), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:50,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 206 transitions. [2021-04-16 06:44:50,813 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 206 transitions. Word has length 143 [2021-04-16 06:44:50,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:50,813 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 206 transitions. [2021-04-16 06:44:50,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:50,813 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 206 transitions. [2021-04-16 06:44:50,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-04-16 06:44:50,814 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:50,814 INFO L519 BasicCegarLoop]: trace histogram [36, 36, 36, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:50,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-04-16 06:44:50,814 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:50,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:50,815 INFO L82 PathProgramCache]: Analyzing trace with hash -529199786, now seen corresponding path program 15 times [2021-04-16 06:44:50,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:50,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579311706] [2021-04-16 06:44:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:50,822 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:50,823 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:50,894 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,898 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,905 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,911 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,918 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,925 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,933 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,941 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,950 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,960 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:50,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:50,970 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:50,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:50,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:50,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:50,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579311706] [2021-04-16 06:44:50,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:50,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 06:44:50,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260630575] [2021-04-16 06:44:50,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 06:44:50,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:50,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 06:44:50,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:44:50,990 INFO L87 Difference]: Start difference. First operand 160 states and 206 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:51,105 INFO L93 Difference]: Finished difference Result 288 states and 378 transitions. [2021-04-16 06:44:51,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-16 06:44:51,105 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 155 [2021-04-16 06:44:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:51,106 INFO L225 Difference]: With dead ends: 288 [2021-04-16 06:44:51,106 INFO L226 Difference]: Without dead ends: 180 [2021-04-16 06:44:51,107 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 81.2ms TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:44:51,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-04-16 06:44:51,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 172. [2021-04-16 06:44:51,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 166 states have (on average 1.3072289156626506) internal successors, (217), 166 states have internal predecessors, (217), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:51,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 222 transitions. [2021-04-16 06:44:51,121 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 222 transitions. Word has length 155 [2021-04-16 06:44:51,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:51,122 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 222 transitions. [2021-04-16 06:44:51,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:51,122 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 222 transitions. [2021-04-16 06:44:51,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-04-16 06:44:51,123 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:51,123 INFO L519 BasicCegarLoop]: trace histogram [40, 40, 40, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:51,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-04-16 06:44:51,123 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:51,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:51,123 INFO L82 PathProgramCache]: Analyzing trace with hash 517216946, now seen corresponding path program 16 times [2021-04-16 06:44:51,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:51,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25511591] [2021-04-16 06:44:51,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:51,129 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:51,129 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:51,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:51,196 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,200 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,205 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,210 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,216 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,223 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,230 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,238 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,248 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,257 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,267 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,280 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:51,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:51,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:51,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25511591] [2021-04-16 06:44:51,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:51,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:44:51,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18287301] [2021-04-16 06:44:51,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:44:51,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:51,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:44:51,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:44:51,299 INFO L87 Difference]: Start difference. First operand 172 states and 222 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:51,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:51,408 INFO L93 Difference]: Finished difference Result 309 states and 406 transitions. [2021-04-16 06:44:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:44:51,409 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2021-04-16 06:44:51,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:51,410 INFO L225 Difference]: With dead ends: 309 [2021-04-16 06:44:51,410 INFO L226 Difference]: Without dead ends: 192 [2021-04-16 06:44:51,411 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 90.2ms TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:44:51,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-04-16 06:44:51,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 184. [2021-04-16 06:44:51,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 178 states have (on average 1.3089887640449438) internal successors, (233), 178 states have internal predecessors, (233), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2021-04-16 06:44:51,426 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 238 transitions. Word has length 167 [2021-04-16 06:44:51,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:51,427 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-04-16 06:44:51,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:51,427 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 238 transitions. [2021-04-16 06:44:51,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-04-16 06:44:51,428 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:51,428 INFO L519 BasicCegarLoop]: trace histogram [44, 44, 44, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:51,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-04-16 06:44:51,428 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:51,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:51,428 INFO L82 PathProgramCache]: Analyzing trace with hash -2120900650, now seen corresponding path program 17 times [2021-04-16 06:44:51,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:51,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656944202] [2021-04-16 06:44:51,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:51,433 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:51,434 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:51,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:51,519 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,543 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,549 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,555 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,561 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,569 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,577 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,586 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,595 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,605 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,616 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,627 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,639 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:51,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:51,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:51,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656944202] [2021-04-16 06:44:51,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:51,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:44:51,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487449506] [2021-04-16 06:44:51,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:44:51,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:51,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:44:51,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:44:51,659 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:51,798 INFO L93 Difference]: Finished difference Result 330 states and 434 transitions. [2021-04-16 06:44:51,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 06:44:51,798 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2021-04-16 06:44:51,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:51,799 INFO L225 Difference]: With dead ends: 330 [2021-04-16 06:44:51,799 INFO L226 Difference]: Without dead ends: 204 [2021-04-16 06:44:51,801 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 124.1ms TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:44:51,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-04-16 06:44:51,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 196. [2021-04-16 06:44:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 190 states have (on average 1.3105263157894738) internal successors, (249), 190 states have internal predecessors, (249), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 254 transitions. [2021-04-16 06:44:51,819 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 254 transitions. Word has length 179 [2021-04-16 06:44:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:51,819 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 254 transitions. [2021-04-16 06:44:51,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 254 transitions. [2021-04-16 06:44:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-04-16 06:44:51,820 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:51,820 INFO L519 BasicCegarLoop]: trace histogram [48, 48, 48, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:51,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-04-16 06:44:51,820 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:51,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1289999154, now seen corresponding path program 18 times [2021-04-16 06:44:51,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:51,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357694323] [2021-04-16 06:44:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:51,826 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:51,828 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:51,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:51,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:51,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:51,934 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,939 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,944 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,949 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,955 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,962 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,969 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,977 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,986 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:51,995 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:51,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,007 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,019 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,030 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,042 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:52,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:52,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:52,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357694323] [2021-04-16 06:44:52,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:52,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-16 06:44:52,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130480647] [2021-04-16 06:44:52,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-16 06:44:52,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:52,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-16 06:44:52,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:44:52,062 INFO L87 Difference]: Start difference. First operand 196 states and 254 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:52,207 INFO L93 Difference]: Finished difference Result 351 states and 462 transitions. [2021-04-16 06:44:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-16 06:44:52,207 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 191 [2021-04-16 06:44:52,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:52,208 INFO L225 Difference]: With dead ends: 351 [2021-04-16 06:44:52,208 INFO L226 Difference]: Without dead ends: 216 [2021-04-16 06:44:52,209 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 112.1ms TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:44:52,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-04-16 06:44:52,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 208. [2021-04-16 06:44:52,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 202 states have (on average 1.311881188118812) internal successors, (265), 202 states have internal predecessors, (265), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 270 transitions. [2021-04-16 06:44:52,235 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 270 transitions. Word has length 191 [2021-04-16 06:44:52,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:52,235 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 270 transitions. [2021-04-16 06:44:52,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:52,236 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 270 transitions. [2021-04-16 06:44:52,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-04-16 06:44:52,237 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:52,237 INFO L519 BasicCegarLoop]: trace histogram [52, 52, 52, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:52,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-04-16 06:44:52,237 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:52,237 INFO L82 PathProgramCache]: Analyzing trace with hash 920785494, now seen corresponding path program 19 times [2021-04-16 06:44:52,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:52,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872934841] [2021-04-16 06:44:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:52,244 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:52,245 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:52,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:52,335 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,340 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,345 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,351 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,358 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,365 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,373 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,381 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,390 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,400 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,412 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,422 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,434 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,446 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,459 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:52,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:52,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:52,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872934841] [2021-04-16 06:44:52,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:52,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:44:52,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820354318] [2021-04-16 06:44:52,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:44:52,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:52,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:44:52,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:44:52,481 INFO L87 Difference]: Start difference. First operand 208 states and 270 transitions. Second operand has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:52,607 INFO L93 Difference]: Finished difference Result 372 states and 490 transitions. [2021-04-16 06:44:52,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-16 06:44:52,607 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 203 [2021-04-16 06:44:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:52,608 INFO L225 Difference]: With dead ends: 372 [2021-04-16 06:44:52,608 INFO L226 Difference]: Without dead ends: 228 [2021-04-16 06:44:52,609 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:44:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-04-16 06:44:52,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 220. [2021-04-16 06:44:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 214 states have (on average 1.3130841121495327) internal successors, (281), 214 states have internal predecessors, (281), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 286 transitions. [2021-04-16 06:44:52,628 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 286 transitions. Word has length 203 [2021-04-16 06:44:52,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:52,628 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 286 transitions. [2021-04-16 06:44:52,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:52,628 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 286 transitions. [2021-04-16 06:44:52,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-04-16 06:44:52,630 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:52,630 INFO L519 BasicCegarLoop]: trace histogram [56, 56, 56, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:52,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-04-16 06:44:52,630 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:52,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:52,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1574032462, now seen corresponding path program 20 times [2021-04-16 06:44:52,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:52,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642315488] [2021-04-16 06:44:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:52,636 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:52,636 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:52,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:52,751 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,756 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,761 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,766 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,772 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,782 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,790 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,798 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,806 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,816 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,826 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,837 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,851 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,864 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,878 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:52,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:52,891 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:52,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:52,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:52,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:52,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642315488] [2021-04-16 06:44:52,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:52,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:44:52,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209867154] [2021-04-16 06:44:52,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:44:52,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:52,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:44:52,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:44:52,911 INFO L87 Difference]: Start difference. First operand 220 states and 286 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:53,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:53,035 INFO L93 Difference]: Finished difference Result 393 states and 518 transitions. [2021-04-16 06:44:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-16 06:44:53,036 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 215 [2021-04-16 06:44:53,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:53,037 INFO L225 Difference]: With dead ends: 393 [2021-04-16 06:44:53,037 INFO L226 Difference]: Without dead ends: 240 [2021-04-16 06:44:53,038 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 165.3ms TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:44:53,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-04-16 06:44:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 232. [2021-04-16 06:44:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 226 states have (on average 1.3141592920353982) internal successors, (297), 226 states have internal predecessors, (297), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 302 transitions. [2021-04-16 06:44:53,060 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 302 transitions. Word has length 215 [2021-04-16 06:44:53,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:53,060 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 302 transitions. [2021-04-16 06:44:53,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:53,060 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 302 transitions. [2021-04-16 06:44:53,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-04-16 06:44:53,061 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:53,061 INFO L519 BasicCegarLoop]: trace histogram [60, 60, 60, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:53,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-04-16 06:44:53,061 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:53,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:53,062 INFO L82 PathProgramCache]: Analyzing trace with hash -441817898, now seen corresponding path program 21 times [2021-04-16 06:44:53,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:53,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880223167] [2021-04-16 06:44:53,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:53,068 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:53,069 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:53,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:53,168 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,172 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,177 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,182 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,188 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,195 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,202 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,211 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,220 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,229 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,239 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,250 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,262 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,274 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,287 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,301 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,315 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:53,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:53,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:53,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880223167] [2021-04-16 06:44:53,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:53,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-04-16 06:44:53,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127169957] [2021-04-16 06:44:53,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-16 06:44:53,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:53,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-16 06:44:53,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:44:53,335 INFO L87 Difference]: Start difference. First operand 232 states and 302 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:53,497 INFO L93 Difference]: Finished difference Result 414 states and 546 transitions. [2021-04-16 06:44:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-16 06:44:53,497 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 227 [2021-04-16 06:44:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:53,498 INFO L225 Difference]: With dead ends: 414 [2021-04-16 06:44:53,498 INFO L226 Difference]: Without dead ends: 252 [2021-04-16 06:44:53,498 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 150.9ms TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:44:53,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-04-16 06:44:53,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 244. [2021-04-16 06:44:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 238 states have (on average 1.315126050420168) internal successors, (313), 238 states have internal predecessors, (313), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 318 transitions. [2021-04-16 06:44:53,521 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 318 transitions. Word has length 227 [2021-04-16 06:44:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:53,522 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 318 transitions. [2021-04-16 06:44:53,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:53,522 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 318 transitions. [2021-04-16 06:44:53,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-04-16 06:44:53,523 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:53,523 INFO L519 BasicCegarLoop]: trace histogram [64, 64, 64, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:53,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-04-16 06:44:53,523 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:53,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:53,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1638081586, now seen corresponding path program 22 times [2021-04-16 06:44:53,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:53,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610978182] [2021-04-16 06:44:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:53,529 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:53,530 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:53,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:53,630 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,634 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,639 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,644 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,650 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,657 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,664 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,672 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,681 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,690 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,701 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,712 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,723 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,735 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,748 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,763 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,777 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:53,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:53,792 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:53,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:53,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:53,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:53,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610978182] [2021-04-16 06:44:53,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:53,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:44:53,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059560727] [2021-04-16 06:44:53,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:44:53,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:53,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:44:53,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:44:53,820 INFO L87 Difference]: Start difference. First operand 244 states and 318 transitions. Second operand has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 20 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:53,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:53,966 INFO L93 Difference]: Finished difference Result 435 states and 574 transitions. [2021-04-16 06:44:53,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-16 06:44:53,966 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 20 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2021-04-16 06:44:53,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:53,967 INFO L225 Difference]: With dead ends: 435 [2021-04-16 06:44:53,967 INFO L226 Difference]: Without dead ends: 264 [2021-04-16 06:44:53,968 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 174.0ms TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:44:53,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-04-16 06:44:53,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 256. [2021-04-16 06:44:53,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 250 states have (on average 1.316) internal successors, (329), 250 states have internal predecessors, (329), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 334 transitions. [2021-04-16 06:44:53,992 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 334 transitions. Word has length 239 [2021-04-16 06:44:53,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:53,992 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 334 transitions. [2021-04-16 06:44:53,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 20 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:53,992 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 334 transitions. [2021-04-16 06:44:54,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-04-16 06:44:54,009 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:54,009 INFO L519 BasicCegarLoop]: trace histogram [68, 68, 68, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:54,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-04-16 06:44:54,009 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:54,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1698600790, now seen corresponding path program 23 times [2021-04-16 06:44:54,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:54,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262085868] [2021-04-16 06:44:54,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:54,015 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:54,016 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:54,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:54,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:54,121 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,126 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,131 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,137 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,143 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,150 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,157 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,166 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,175 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,186 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,197 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,212 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,225 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,237 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,250 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,264 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,279 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,294 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,311 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:54,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:54,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:54,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:54,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:54,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262085868] [2021-04-16 06:44:54,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:54,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-04-16 06:44:54,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621866516] [2021-04-16 06:44:54,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-04-16 06:44:54,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:54,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-04-16 06:44:54,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:44:54,331 INFO L87 Difference]: Start difference. First operand 256 states and 334 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:54,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:54,485 INFO L93 Difference]: Finished difference Result 456 states and 602 transitions. [2021-04-16 06:44:54,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 06:44:54,485 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 251 [2021-04-16 06:44:54,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:54,486 INFO L225 Difference]: With dead ends: 456 [2021-04-16 06:44:54,486 INFO L226 Difference]: Without dead ends: 276 [2021-04-16 06:44:54,487 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 192.5ms TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:44:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-04-16 06:44:54,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 268. [2021-04-16 06:44:54,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 262 states have (on average 1.316793893129771) internal successors, (345), 262 states have internal predecessors, (345), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 350 transitions. [2021-04-16 06:44:54,511 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 350 transitions. Word has length 251 [2021-04-16 06:44:54,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:54,511 INFO L480 AbstractCegarLoop]: Abstraction has 268 states and 350 transitions. [2021-04-16 06:44:54,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:54,511 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 350 transitions. [2021-04-16 06:44:54,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-04-16 06:44:54,513 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:54,513 INFO L519 BasicCegarLoop]: trace histogram [72, 72, 72, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:54,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-04-16 06:44:54,513 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:54,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:54,513 INFO L82 PathProgramCache]: Analyzing trace with hash 2083699890, now seen corresponding path program 24 times [2021-04-16 06:44:54,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:54,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718635436] [2021-04-16 06:44:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:54,521 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:54,523 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:54,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:54,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:54,644 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,649 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,654 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,660 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,667 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,675 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,683 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,692 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,703 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,713 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,724 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,736 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,749 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,763 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,786 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,801 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,817 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,834 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,851 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:54,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:54,869 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:54,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:54,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:54,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:54,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:54,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:54,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718635436] [2021-04-16 06:44:54,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:54,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:44:54,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515918087] [2021-04-16 06:44:54,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:44:54,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:54,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:44:54,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:44:54,892 INFO L87 Difference]: Start difference. First operand 268 states and 350 transitions. Second operand has 23 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 22 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:55,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:55,069 INFO L93 Difference]: Finished difference Result 477 states and 630 transitions. [2021-04-16 06:44:55,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-16 06:44:55,069 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 22 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 263 [2021-04-16 06:44:55,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:55,070 INFO L225 Difference]: With dead ends: 477 [2021-04-16 06:44:55,070 INFO L226 Difference]: Without dead ends: 288 [2021-04-16 06:44:55,071 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 230.2ms TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:44:55,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-04-16 06:44:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 280. [2021-04-16 06:44:55,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 274 states have (on average 1.3175182481751824) internal successors, (361), 274 states have internal predecessors, (361), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 366 transitions. [2021-04-16 06:44:55,096 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 366 transitions. Word has length 263 [2021-04-16 06:44:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:55,096 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 366 transitions. [2021-04-16 06:44:55,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 22 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:55,097 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 366 transitions. [2021-04-16 06:44:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-04-16 06:44:55,098 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:55,098 INFO L519 BasicCegarLoop]: trace histogram [76, 76, 76, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:55,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-04-16 06:44:55,099 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:55,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:55,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2129570262, now seen corresponding path program 25 times [2021-04-16 06:44:55,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:55,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403181006] [2021-04-16 06:44:55,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:55,105 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:55,106 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:55,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:55,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:55,219 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,224 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,229 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,235 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,241 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,248 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,256 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,264 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,273 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,283 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,293 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,305 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,317 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,330 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,343 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,357 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,371 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,387 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,404 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,422 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:55,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,456 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 06:44:55,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:55,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:55,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:55,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:55,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403181006] [2021-04-16 06:44:55,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:55,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:44:55,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717910393] [2021-04-16 06:44:55,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:44:55,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:55,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:44:55,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:44:55,477 INFO L87 Difference]: Start difference. First operand 280 states and 366 transitions. Second operand has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 23 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:55,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:55,639 INFO L93 Difference]: Finished difference Result 490 states and 646 transitions. [2021-04-16 06:44:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-04-16 06:44:55,640 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 23 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 275 [2021-04-16 06:44:55,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:55,641 INFO L225 Difference]: With dead ends: 490 [2021-04-16 06:44:55,641 INFO L226 Difference]: Without dead ends: 292 [2021-04-16 06:44:55,641 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 238.0ms TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:44:55,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-04-16 06:44:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-04-16 06:44:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 286 states have (on average 1.3181818181818181) internal successors, (377), 286 states have internal predecessors, (377), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 382 transitions. [2021-04-16 06:44:55,669 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 382 transitions. Word has length 275 [2021-04-16 06:44:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:55,669 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 382 transitions. [2021-04-16 06:44:55,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 23 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 382 transitions. [2021-04-16 06:44:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-04-16 06:44:55,671 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:55,671 INFO L519 BasicCegarLoop]: trace histogram [80, 80, 80, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:55,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-04-16 06:44:55,671 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:55,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:55,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1865616078, now seen corresponding path program 26 times [2021-04-16 06:44:55,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:55,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124799062] [2021-04-16 06:44:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:55,677 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:55,677 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:55,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:55,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:44:55,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:55,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:55,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:55,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:55,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:55,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:55,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:55,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:55,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:55,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124799062] [2021-04-16 06:44:55,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:55,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:44:55,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874950258] [2021-04-16 06:44:55,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:44:55,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:55,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:44:55,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:44:55,864 INFO L87 Difference]: Start difference. First operand 292 states and 382 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:56,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:56,044 INFO L93 Difference]: Finished difference Result 421 states and 545 transitions. [2021-04-16 06:44:56,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:44:56,044 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 287 [2021-04-16 06:44:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:56,046 INFO L225 Difference]: With dead ends: 421 [2021-04-16 06:44:56,046 INFO L226 Difference]: Without dead ends: 405 [2021-04-16 06:44:56,046 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:44:56,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-04-16 06:44:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 355. [2021-04-16 06:44:56,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 349 states have (on average 1.320916905444126) internal successors, (461), 349 states have internal predecessors, (461), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 466 transitions. [2021-04-16 06:44:56,092 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 466 transitions. Word has length 287 [2021-04-16 06:44:56,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:56,093 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 466 transitions. [2021-04-16 06:44:56,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:56,093 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 466 transitions. [2021-04-16 06:44:56,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-04-16 06:44:56,094 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:56,094 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:56,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-04-16 06:44:56,094 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:56,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:56,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1824488221, now seen corresponding path program 27 times [2021-04-16 06:44:56,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:56,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674406133] [2021-04-16 06:44:56,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:56,100 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:56,101 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:56,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:56,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:56,266 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:56,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:56,270 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:56,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:56,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:56,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:56,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:56,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674406133] [2021-04-16 06:44:56,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:56,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 06:44:56,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114716547] [2021-04-16 06:44:56,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 06:44:56,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:56,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 06:44:56,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:44:56,294 INFO L87 Difference]: Start difference. First operand 355 states and 466 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:56,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:56,395 INFO L93 Difference]: Finished difference Result 380 states and 494 transitions. [2021-04-16 06:44:56,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-16 06:44:56,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 350 [2021-04-16 06:44:56,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:56,397 INFO L225 Difference]: With dead ends: 380 [2021-04-16 06:44:56,397 INFO L226 Difference]: Without dead ends: 369 [2021-04-16 06:44:56,397 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:44:56,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-04-16 06:44:56,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 358. [2021-04-16 06:44:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 352 states have (on average 1.3181818181818181) internal successors, (464), 352 states have internal predecessors, (464), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 469 transitions. [2021-04-16 06:44:56,430 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 469 transitions. Word has length 350 [2021-04-16 06:44:56,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:56,431 INFO L480 AbstractCegarLoop]: Abstraction has 358 states and 469 transitions. [2021-04-16 06:44:56,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:56,431 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 469 transitions. [2021-04-16 06:44:56,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-04-16 06:44:56,432 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:56,432 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:56,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-04-16 06:44:56,432 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:56,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:56,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1130438452, now seen corresponding path program 28 times [2021-04-16 06:44:56,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:56,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399125463] [2021-04-16 06:44:56,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:56,438 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:56,439 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:56,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:56,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:56,640 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:56,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:56,644 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:56,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:56,649 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:56,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:56,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:56,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:56,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:56,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:56,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399125463] [2021-04-16 06:44:56,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:56,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:44:56,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018810809] [2021-04-16 06:44:56,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:44:56,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:56,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:44:56,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:44:56,676 INFO L87 Difference]: Start difference. First operand 358 states and 469 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:56,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:56,816 INFO L93 Difference]: Finished difference Result 391 states and 507 transitions. [2021-04-16 06:44:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 06:44:56,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 353 [2021-04-16 06:44:56,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:56,818 INFO L225 Difference]: With dead ends: 391 [2021-04-16 06:44:56,818 INFO L226 Difference]: Without dead ends: 380 [2021-04-16 06:44:56,818 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:44:56,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-04-16 06:44:56,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 361. [2021-04-16 06:44:56,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 355 states have (on average 1.315492957746479) internal successors, (467), 355 states have internal predecessors, (467), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 472 transitions. [2021-04-16 06:44:56,852 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 472 transitions. Word has length 353 [2021-04-16 06:44:56,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:56,852 INFO L480 AbstractCegarLoop]: Abstraction has 361 states and 472 transitions. [2021-04-16 06:44:56,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:56,852 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 472 transitions. [2021-04-16 06:44:56,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-04-16 06:44:56,853 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:56,854 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 5, 5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:56,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-04-16 06:44:56,854 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:56,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:56,854 INFO L82 PathProgramCache]: Analyzing trace with hash 666333117, now seen corresponding path program 29 times [2021-04-16 06:44:56,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:56,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591519729] [2021-04-16 06:44:56,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:56,859 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:56,860 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:57,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:57,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:57,041 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,045 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,051 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,057 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:57,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:57,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:57,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591519729] [2021-04-16 06:44:57,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:57,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-16 06:44:57,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489457226] [2021-04-16 06:44:57,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-16 06:44:57,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:57,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-16 06:44:57,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:44:57,083 INFO L87 Difference]: Start difference. First operand 361 states and 472 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:57,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:57,237 INFO L93 Difference]: Finished difference Result 405 states and 524 transitions. [2021-04-16 06:44:57,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:44:57,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 356 [2021-04-16 06:44:57,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:57,239 INFO L225 Difference]: With dead ends: 405 [2021-04-16 06:44:57,239 INFO L226 Difference]: Without dead ends: 394 [2021-04-16 06:44:57,239 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:44:57,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-04-16 06:44:57,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 364. [2021-04-16 06:44:57,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 358 states have (on average 1.312849162011173) internal successors, (470), 358 states have internal predecessors, (470), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 475 transitions. [2021-04-16 06:44:57,281 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 475 transitions. Word has length 356 [2021-04-16 06:44:57,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:57,282 INFO L480 AbstractCegarLoop]: Abstraction has 364 states and 475 transitions. [2021-04-16 06:44:57,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:57,282 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 475 transitions. [2021-04-16 06:44:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2021-04-16 06:44:57,283 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:57,283 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:57,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-04-16 06:44:57,283 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:57,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:57,284 INFO L82 PathProgramCache]: Analyzing trace with hash 4023956, now seen corresponding path program 30 times [2021-04-16 06:44:57,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:57,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662206010] [2021-04-16 06:44:57,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:57,298 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:57,299 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:57,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:57,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:57,480 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,486 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,491 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,497 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,503 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:57,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:57,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:57,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662206010] [2021-04-16 06:44:57,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:57,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:44:57,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892467479] [2021-04-16 06:44:57,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:44:57,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:57,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:44:57,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:44:57,531 INFO L87 Difference]: Start difference. First operand 364 states and 475 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:57,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:57,699 INFO L93 Difference]: Finished difference Result 484 states and 628 transitions. [2021-04-16 06:44:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:44:57,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 359 [2021-04-16 06:44:57,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:57,701 INFO L225 Difference]: With dead ends: 484 [2021-04-16 06:44:57,701 INFO L226 Difference]: Without dead ends: 473 [2021-04-16 06:44:57,702 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:44:57,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-04-16 06:44:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 367. [2021-04-16 06:44:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 361 states have (on average 1.3102493074792243) internal successors, (473), 361 states have internal predecessors, (473), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:57,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 478 transitions. [2021-04-16 06:44:57,736 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 478 transitions. Word has length 359 [2021-04-16 06:44:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:57,736 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 478 transitions. [2021-04-16 06:44:57,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 478 transitions. [2021-04-16 06:44:57,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-04-16 06:44:57,737 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:57,737 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:57,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-04-16 06:44:57,738 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:57,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:57,738 INFO L82 PathProgramCache]: Analyzing trace with hash 231566429, now seen corresponding path program 31 times [2021-04-16 06:44:57,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:57,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943046131] [2021-04-16 06:44:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:57,750 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:57,751 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:57,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:57,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:57,917 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,921 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,926 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,932 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,938 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,945 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:57,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:57,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:57,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:57,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:57,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:57,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943046131] [2021-04-16 06:44:57,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:57,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:44:57,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258775340] [2021-04-16 06:44:57,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:44:57,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:57,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:44:57,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:44:57,973 INFO L87 Difference]: Start difference. First operand 367 states and 478 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:58,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:58,173 INFO L93 Difference]: Finished difference Result 567 states and 738 transitions. [2021-04-16 06:44:58,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:44:58,173 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 362 [2021-04-16 06:44:58,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:58,175 INFO L225 Difference]: With dead ends: 567 [2021-04-16 06:44:58,175 INFO L226 Difference]: Without dead ends: 556 [2021-04-16 06:44:58,175 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:44:58,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-04-16 06:44:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 370. [2021-04-16 06:44:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 364 states have (on average 1.3076923076923077) internal successors, (476), 364 states have internal predecessors, (476), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 481 transitions. [2021-04-16 06:44:58,211 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 481 transitions. Word has length 362 [2021-04-16 06:44:58,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:58,211 INFO L480 AbstractCegarLoop]: Abstraction has 370 states and 481 transitions. [2021-04-16 06:44:58,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 481 transitions. [2021-04-16 06:44:58,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-04-16 06:44:58,212 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:58,212 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 6, 6, 6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:58,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-04-16 06:44:58,213 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:58,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:58,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1490986484, now seen corresponding path program 32 times [2021-04-16 06:44:58,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:58,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509474761] [2021-04-16 06:44:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:58,218 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:58,219 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:58,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:58,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:58,370 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,374 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,378 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,384 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,390 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,397 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,404 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:58,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:58,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:58,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509474761] [2021-04-16 06:44:58,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:58,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:44:58,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21819975] [2021-04-16 06:44:58,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:44:58,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:58,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:44:58,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:44:58,433 INFO L87 Difference]: Start difference. First operand 370 states and 481 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:58,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:58,669 INFO L93 Difference]: Finished difference Result 650 states and 848 transitions. [2021-04-16 06:44:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:44:58,669 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 365 [2021-04-16 06:44:58,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:58,671 INFO L225 Difference]: With dead ends: 650 [2021-04-16 06:44:58,671 INFO L226 Difference]: Without dead ends: 639 [2021-04-16 06:44:58,672 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-04-16 06:44:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-04-16 06:44:58,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 373. [2021-04-16 06:44:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 367 states have (on average 1.3051771117166213) internal successors, (479), 367 states have internal predecessors, (479), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 484 transitions. [2021-04-16 06:44:58,711 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 484 transitions. Word has length 365 [2021-04-16 06:44:58,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:58,711 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 484 transitions. [2021-04-16 06:44:58,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:58,712 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 484 transitions. [2021-04-16 06:44:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2021-04-16 06:44:58,713 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:58,713 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:58,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-04-16 06:44:58,713 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:58,713 INFO L82 PathProgramCache]: Analyzing trace with hash 39547133, now seen corresponding path program 33 times [2021-04-16 06:44:58,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:58,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405527524] [2021-04-16 06:44:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:58,719 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:58,720 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:58,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:58,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:58,878 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,882 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,887 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,893 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,899 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,906 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,914 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,922 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:58,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:58,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:58,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:58,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:58,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:58,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405527524] [2021-04-16 06:44:58,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:58,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-04-16 06:44:58,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949241461] [2021-04-16 06:44:58,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-16 06:44:58,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:58,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-16 06:44:58,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:44:58,952 INFO L87 Difference]: Start difference. First operand 373 states and 484 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:59,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:59,238 INFO L93 Difference]: Finished difference Result 733 states and 958 transitions. [2021-04-16 06:44:59,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 06:44:59,238 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 368 [2021-04-16 06:44:59,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:59,241 INFO L225 Difference]: With dead ends: 733 [2021-04-16 06:44:59,241 INFO L226 Difference]: Without dead ends: 722 [2021-04-16 06:44:59,241 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 65.9ms TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:44:59,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-04-16 06:44:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 376. [2021-04-16 06:44:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 370 states have (on average 1.3027027027027027) internal successors, (482), 370 states have internal predecessors, (482), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 487 transitions. [2021-04-16 06:44:59,280 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 487 transitions. Word has length 368 [2021-04-16 06:44:59,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:59,280 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 487 transitions. [2021-04-16 06:44:59,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:59,280 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 487 transitions. [2021-04-16 06:44:59,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2021-04-16 06:44:59,282 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:59,282 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 8, 8, 8, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:59,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-04-16 06:44:59,282 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:59,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:59,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1940577620, now seen corresponding path program 34 times [2021-04-16 06:44:59,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:59,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255137835] [2021-04-16 06:44:59,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:59,287 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:59,287 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:59,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:59,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:44:59,435 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:59,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:59,439 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:59,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:59,444 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:59,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:59,449 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:59,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:59,456 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:59,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:59,462 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:59,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:59,470 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:59,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:59,478 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:59,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:59,487 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:44:59,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:44:59,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:59,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:44:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:44:59,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:44:59,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:44:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:44:59,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255137835] [2021-04-16 06:44:59,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:44:59,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-04-16 06:44:59,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238754672] [2021-04-16 06:44:59,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 06:44:59,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:44:59,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 06:44:59,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:44:59,517 INFO L87 Difference]: Start difference. First operand 376 states and 487 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:59,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:44:59,820 INFO L93 Difference]: Finished difference Result 816 states and 1068 transitions. [2021-04-16 06:44:59,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:44:59,820 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 371 [2021-04-16 06:44:59,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:44:59,824 INFO L225 Difference]: With dead ends: 816 [2021-04-16 06:44:59,824 INFO L226 Difference]: Without dead ends: 805 [2021-04-16 06:44:59,824 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 72.9ms TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:44:59,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-04-16 06:44:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 379. [2021-04-16 06:44:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 373 states have (on average 1.3002680965147453) internal successors, (485), 373 states have internal predecessors, (485), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:44:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 490 transitions. [2021-04-16 06:44:59,890 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 490 transitions. Word has length 371 [2021-04-16 06:44:59,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:44:59,890 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 490 transitions. [2021-04-16 06:44:59,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:44:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 490 transitions. [2021-04-16 06:44:59,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-04-16 06:44:59,891 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:44:59,892 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 9, 9, 9, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:44:59,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-04-16 06:44:59,892 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:44:59,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:44:59,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2101050781, now seen corresponding path program 35 times [2021-04-16 06:44:59,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:44:59,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184802065] [2021-04-16 06:44:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:44:59,897 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:44:59,899 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:44:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:00,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:00,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:00,044 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,048 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,053 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,058 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,064 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,071 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,079 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,087 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,096 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,105 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:00,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:00,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:00,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184802065] [2021-04-16 06:45:00,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:00,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-04-16 06:45:00,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468146424] [2021-04-16 06:45:00,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-16 06:45:00,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:00,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-16 06:45:00,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:45:00,139 INFO L87 Difference]: Start difference. First operand 379 states and 490 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:00,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:00,497 INFO L93 Difference]: Finished difference Result 899 states and 1178 transitions. [2021-04-16 06:45:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-16 06:45:00,497 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 374 [2021-04-16 06:45:00,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:00,500 INFO L225 Difference]: With dead ends: 899 [2021-04-16 06:45:00,500 INFO L226 Difference]: Without dead ends: 888 [2021-04-16 06:45:00,500 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:45:00,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-04-16 06:45:00,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 382. [2021-04-16 06:45:00,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 376 states have (on average 1.297872340425532) internal successors, (488), 376 states have internal predecessors, (488), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:00,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 493 transitions. [2021-04-16 06:45:00,553 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 493 transitions. Word has length 374 [2021-04-16 06:45:00,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:00,553 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 493 transitions. [2021-04-16 06:45:00,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:00,553 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 493 transitions. [2021-04-16 06:45:00,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2021-04-16 06:45:00,554 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:00,554 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 10, 10, 10, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:00,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-04-16 06:45:00,554 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:00,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:00,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1836577612, now seen corresponding path program 36 times [2021-04-16 06:45:00,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:00,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272549109] [2021-04-16 06:45:00,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:00,563 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:00,564 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:00,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:00,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:00,716 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,720 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,724 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,730 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,736 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,743 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,750 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,758 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,767 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,777 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,788 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:00,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:00,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:00,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:00,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:00,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:00,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272549109] [2021-04-16 06:45:00,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:00,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-04-16 06:45:00,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552298537] [2021-04-16 06:45:00,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-16 06:45:00,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:00,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-16 06:45:00,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:45:00,821 INFO L87 Difference]: Start difference. First operand 382 states and 493 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:01,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:01,245 INFO L93 Difference]: Finished difference Result 982 states and 1288 transitions. [2021-04-16 06:45:01,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-16 06:45:01,246 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 377 [2021-04-16 06:45:01,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:01,248 INFO L225 Difference]: With dead ends: 982 [2021-04-16 06:45:01,248 INFO L226 Difference]: Without dead ends: 971 [2021-04-16 06:45:01,249 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:45:01,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2021-04-16 06:45:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 385. [2021-04-16 06:45:01,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 379 states have (on average 1.2955145118733509) internal successors, (491), 379 states have internal predecessors, (491), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 496 transitions. [2021-04-16 06:45:01,304 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 496 transitions. Word has length 377 [2021-04-16 06:45:01,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:01,304 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 496 transitions. [2021-04-16 06:45:01,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:01,304 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 496 transitions. [2021-04-16 06:45:01,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-04-16 06:45:01,306 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:01,306 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 11, 11, 11, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:01,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-04-16 06:45:01,306 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:01,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:01,306 INFO L82 PathProgramCache]: Analyzing trace with hash 717722173, now seen corresponding path program 37 times [2021-04-16 06:45:01,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:01,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429360201] [2021-04-16 06:45:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:01,312 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:01,312 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:01,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:01,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:01,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:01,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:01,469 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:01,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:01,474 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:01,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:01,479 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:01,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:01,484 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:01,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:01,490 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:01,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:01,497 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:01,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:01,505 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:01,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:01,513 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:01,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:01,522 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:01,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:01,532 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:01,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:01,542 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:01,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:01,553 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:01,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:01,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:01,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:01,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:01,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:01,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:01,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429360201] [2021-04-16 06:45:01,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:01,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:45:01,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390815811] [2021-04-16 06:45:01,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:45:01,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:01,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:45:01,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:45:01,589 INFO L87 Difference]: Start difference. First operand 385 states and 496 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:02,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:02,077 INFO L93 Difference]: Finished difference Result 1065 states and 1398 transitions. [2021-04-16 06:45:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 06:45:02,078 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 380 [2021-04-16 06:45:02,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:02,080 INFO L225 Difference]: With dead ends: 1065 [2021-04-16 06:45:02,081 INFO L226 Difference]: Without dead ends: 1054 [2021-04-16 06:45:02,081 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-04-16 06:45:02,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2021-04-16 06:45:02,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 388. [2021-04-16 06:45:02,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 382 states have (on average 1.293193717277487) internal successors, (494), 382 states have internal predecessors, (494), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 499 transitions. [2021-04-16 06:45:02,126 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 499 transitions. Word has length 380 [2021-04-16 06:45:02,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:02,127 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 499 transitions. [2021-04-16 06:45:02,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:02,127 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 499 transitions. [2021-04-16 06:45:02,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-04-16 06:45:02,128 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:02,128 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 12, 12, 12, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:02,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-04-16 06:45:02,128 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:02,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:02,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1927033876, now seen corresponding path program 38 times [2021-04-16 06:45:02,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:02,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143931733] [2021-04-16 06:45:02,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:02,133 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:02,134 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:02,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:02,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:02,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:02,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:02,284 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:02,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,289 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:02,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,294 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:02,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,299 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:02,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,306 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:02,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,313 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:02,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,320 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:02,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,329 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:02,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,338 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:02,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,348 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:02,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,358 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:02,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,369 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:02,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,381 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:02,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:02,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:02,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:02,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:02,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:02,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:02,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:02,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143931733] [2021-04-16 06:45:02,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:02,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-16 06:45:02,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180102564] [2021-04-16 06:45:02,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-16 06:45:02,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:02,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-16 06:45:02,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:45:02,416 INFO L87 Difference]: Start difference. First operand 388 states and 499 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:02,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:02,989 INFO L93 Difference]: Finished difference Result 1148 states and 1508 transitions. [2021-04-16 06:45:02,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-16 06:45:02,990 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 383 [2021-04-16 06:45:02,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:02,992 INFO L225 Difference]: With dead ends: 1148 [2021-04-16 06:45:02,992 INFO L226 Difference]: Without dead ends: 1137 [2021-04-16 06:45:02,993 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 118.4ms TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:45:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-04-16 06:45:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 391. [2021-04-16 06:45:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 385 states have (on average 1.290909090909091) internal successors, (497), 385 states have internal predecessors, (497), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 502 transitions. [2021-04-16 06:45:03,045 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 502 transitions. Word has length 383 [2021-04-16 06:45:03,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:03,045 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 502 transitions. [2021-04-16 06:45:03,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:03,045 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 502 transitions. [2021-04-16 06:45:03,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2021-04-16 06:45:03,046 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:03,047 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 13, 13, 13, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:03,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-04-16 06:45:03,047 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:03,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:03,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1948668195, now seen corresponding path program 39 times [2021-04-16 06:45:03,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:03,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706183965] [2021-04-16 06:45:03,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:03,052 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:03,053 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:03,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:03,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:03,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:03,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:03,206 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,210 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,215 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,220 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,226 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,233 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,246 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,257 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,267 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,278 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,291 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,304 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,318 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,333 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:03,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:03,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:03,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:03,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:03,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:03,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:03,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:03,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706183965] [2021-04-16 06:45:03,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:03,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-04-16 06:45:03,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592748344] [2021-04-16 06:45:03,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-16 06:45:03,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:03,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-16 06:45:03,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:45:03,371 INFO L87 Difference]: Start difference. First operand 391 states and 502 transitions. Second operand has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:03,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:03,993 INFO L93 Difference]: Finished difference Result 1231 states and 1618 transitions. [2021-04-16 06:45:03,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-16 06:45:03,993 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 386 [2021-04-16 06:45:03,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:03,997 INFO L225 Difference]: With dead ends: 1231 [2021-04-16 06:45:03,997 INFO L226 Difference]: Without dead ends: 1220 [2021-04-16 06:45:03,997 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-04-16 06:45:03,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-04-16 06:45:04,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 394. [2021-04-16 06:45:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 388 states have (on average 1.288659793814433) internal successors, (500), 388 states have internal predecessors, (500), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 505 transitions. [2021-04-16 06:45:04,054 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 505 transitions. Word has length 386 [2021-04-16 06:45:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:04,054 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 505 transitions. [2021-04-16 06:45:04,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:04,054 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 505 transitions. [2021-04-16 06:45:04,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-04-16 06:45:04,055 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:04,055 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 14, 14, 14, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:04,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-04-16 06:45:04,056 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:04,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:04,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1383246988, now seen corresponding path program 40 times [2021-04-16 06:45:04,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:04,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440103847] [2021-04-16 06:45:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:04,062 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:04,063 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:04,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:04,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:04,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:04,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:04,222 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,226 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,231 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,236 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,242 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,248 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,255 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,263 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,271 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,280 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,290 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,300 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,315 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,326 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,338 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:04,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:04,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:04,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:04,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:04,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:04,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:04,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:04,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440103847] [2021-04-16 06:45:04,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:04,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-04-16 06:45:04,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271409367] [2021-04-16 06:45:04,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-16 06:45:04,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:04,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-16 06:45:04,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:45:04,370 INFO L87 Difference]: Start difference. First operand 394 states and 505 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:05,035 INFO L93 Difference]: Finished difference Result 1314 states and 1728 transitions. [2021-04-16 06:45:05,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-16 06:45:05,045 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 389 [2021-04-16 06:45:05,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:05,048 INFO L225 Difference]: With dead ends: 1314 [2021-04-16 06:45:05,048 INFO L226 Difference]: Without dead ends: 1303 [2021-04-16 06:45:05,049 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 134.9ms TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:45:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-04-16 06:45:05,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 397. [2021-04-16 06:45:05,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 391 states have (on average 1.2864450127877238) internal successors, (503), 391 states have internal predecessors, (503), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:05,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 508 transitions. [2021-04-16 06:45:05,104 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 508 transitions. Word has length 389 [2021-04-16 06:45:05,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:05,105 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 508 transitions. [2021-04-16 06:45:05,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:05,105 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 508 transitions. [2021-04-16 06:45:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-04-16 06:45:05,106 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:05,106 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 15, 15, 15, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:05,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-04-16 06:45:05,106 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:05,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:05,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1781804163, now seen corresponding path program 41 times [2021-04-16 06:45:05,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:05,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96379247] [2021-04-16 06:45:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:05,112 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:05,112 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:05,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:05,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:05,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:05,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:05,265 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,270 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,274 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,280 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,286 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,293 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,301 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,309 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,318 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,328 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,339 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,350 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,362 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,374 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,388 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,403 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:05,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:05,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:05,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:05,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:05,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:05,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:05,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96379247] [2021-04-16 06:45:05,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:05,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-04-16 06:45:05,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088298284] [2021-04-16 06:45:05,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-16 06:45:05,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:05,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-16 06:45:05,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:45:05,448 INFO L87 Difference]: Start difference. First operand 397 states and 508 transitions. Second operand has 20 states, 20 states have (on average 3.4) internal successors, (68), 19 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:06,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:06,185 INFO L93 Difference]: Finished difference Result 1397 states and 1838 transitions. [2021-04-16 06:45:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-16 06:45:06,186 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 19 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 392 [2021-04-16 06:45:06,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:06,189 INFO L225 Difference]: With dead ends: 1397 [2021-04-16 06:45:06,189 INFO L226 Difference]: Without dead ends: 1386 [2021-04-16 06:45:06,189 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 167.3ms TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:45:06,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-04-16 06:45:06,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 400. [2021-04-16 06:45:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 394 states have (on average 1.284263959390863) internal successors, (506), 394 states have internal predecessors, (506), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 511 transitions. [2021-04-16 06:45:06,245 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 511 transitions. Word has length 392 [2021-04-16 06:45:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:06,245 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 511 transitions. [2021-04-16 06:45:06,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 19 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 511 transitions. [2021-04-16 06:45:06,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-04-16 06:45:06,247 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:06,247 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 16, 16, 16, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:06,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-04-16 06:45:06,247 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:06,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:06,247 INFO L82 PathProgramCache]: Analyzing trace with hash 385968852, now seen corresponding path program 42 times [2021-04-16 06:45:06,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:06,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623250993] [2021-04-16 06:45:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:06,256 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:06,257 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:06,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:06,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:06,408 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,412 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,417 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,422 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,428 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,434 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,441 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,449 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,458 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,468 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,478 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,489 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,501 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,513 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,526 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,542 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,558 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:06,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:06,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:06,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:06,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:06,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:06,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623250993] [2021-04-16 06:45:06,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:06,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-04-16 06:45:06,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865205288] [2021-04-16 06:45:06,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-04-16 06:45:06,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:06,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-04-16 06:45:06,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:45:06,594 INFO L87 Difference]: Start difference. First operand 400 states and 511 transitions. Second operand has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 20 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:07,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:07,460 INFO L93 Difference]: Finished difference Result 1480 states and 1948 transitions. [2021-04-16 06:45:07,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-16 06:45:07,460 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 20 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 395 [2021-04-16 06:45:07,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:07,463 INFO L225 Difference]: With dead ends: 1480 [2021-04-16 06:45:07,463 INFO L226 Difference]: Without dead ends: 1469 [2021-04-16 06:45:07,464 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 170.7ms TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-04-16 06:45:07,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-04-16 06:45:07,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 403. [2021-04-16 06:45:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 397 states have (on average 1.2821158690176322) internal successors, (509), 397 states have internal predecessors, (509), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 514 transitions. [2021-04-16 06:45:07,522 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 514 transitions. Word has length 395 [2021-04-16 06:45:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:07,522 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 514 transitions. [2021-04-16 06:45:07,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 20 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:07,522 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 514 transitions. [2021-04-16 06:45:07,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2021-04-16 06:45:07,523 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:07,524 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 17, 17, 17, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:07,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-04-16 06:45:07,524 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:07,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1383596061, now seen corresponding path program 43 times [2021-04-16 06:45:07,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:07,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375688875] [2021-04-16 06:45:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:07,529 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:07,530 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:07,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:07,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:07,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:07,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:07,678 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,682 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,687 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,693 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,701 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,708 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,716 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,724 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,734 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,743 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,754 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,765 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,778 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,793 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,807 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,821 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,835 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,851 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:07,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:07,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:07,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:07,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:07,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:07,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:07,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375688875] [2021-04-16 06:45:07,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:07,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-04-16 06:45:07,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102687776] [2021-04-16 06:45:07,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-04-16 06:45:07,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:07,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-04-16 06:45:07,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:45:07,886 INFO L87 Difference]: Start difference. First operand 403 states and 514 transitions. Second operand has 22 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 21 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:08,770 INFO L93 Difference]: Finished difference Result 1563 states and 2058 transitions. [2021-04-16 06:45:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-16 06:45:08,771 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 21 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 398 [2021-04-16 06:45:08,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:08,775 INFO L225 Difference]: With dead ends: 1563 [2021-04-16 06:45:08,775 INFO L226 Difference]: Without dead ends: 1552 [2021-04-16 06:45:08,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 191.1ms TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-04-16 06:45:08,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-04-16 06:45:08,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 406. [2021-04-16 06:45:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 400 states have (on average 1.28) internal successors, (512), 400 states have internal predecessors, (512), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 517 transitions. [2021-04-16 06:45:08,846 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 517 transitions. Word has length 398 [2021-04-16 06:45:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:08,846 INFO L480 AbstractCegarLoop]: Abstraction has 406 states and 517 transitions. [2021-04-16 06:45:08,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 21 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 517 transitions. [2021-04-16 06:45:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-04-16 06:45:08,847 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:08,847 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 18, 18, 18, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:08,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-04-16 06:45:08,848 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:08,848 INFO L82 PathProgramCache]: Analyzing trace with hash 522091060, now seen corresponding path program 44 times [2021-04-16 06:45:08,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:08,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089607311] [2021-04-16 06:45:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:08,853 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:08,853 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:09,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:09,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:09,007 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,011 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,020 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,028 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,034 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,042 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,054 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,062 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,071 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,081 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,092 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,103 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,116 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,128 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,142 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,156 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,171 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,186 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,202 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:09,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:09,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:09,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:09,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:09,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089607311] [2021-04-16 06:45:09,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:09,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:45:09,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063202615] [2021-04-16 06:45:09,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:45:09,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:09,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:45:09,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:45:09,239 INFO L87 Difference]: Start difference. First operand 406 states and 517 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 22 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:10,198 INFO L93 Difference]: Finished difference Result 1646 states and 2168 transitions. [2021-04-16 06:45:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-16 06:45:10,198 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 22 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 401 [2021-04-16 06:45:10,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:10,202 INFO L225 Difference]: With dead ends: 1646 [2021-04-16 06:45:10,202 INFO L226 Difference]: Without dead ends: 1635 [2021-04-16 06:45:10,202 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 214.0ms TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-04-16 06:45:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2021-04-16 06:45:10,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 409. [2021-04-16 06:45:10,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 403 states have (on average 1.2779156327543424) internal successors, (515), 403 states have internal predecessors, (515), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 520 transitions. [2021-04-16 06:45:10,277 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 520 transitions. Word has length 401 [2021-04-16 06:45:10,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:10,277 INFO L480 AbstractCegarLoop]: Abstraction has 409 states and 520 transitions. [2021-04-16 06:45:10,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 22 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:10,278 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 520 transitions. [2021-04-16 06:45:10,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-04-16 06:45:10,279 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:10,279 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 19, 19, 19, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:10,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-04-16 06:45:10,279 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:10,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2143800131, now seen corresponding path program 45 times [2021-04-16 06:45:10,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:10,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956111865] [2021-04-16 06:45:10,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:10,285 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:10,286 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:10,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:10,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:10,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:10,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:10,430 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,434 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,438 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,444 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,449 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,459 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,467 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,475 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,484 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,494 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,504 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,515 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,527 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,540 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,553 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,567 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,582 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,597 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,613 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,630 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-04-16 06:45:10,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:10,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:10,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:10,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:10,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:10,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:10,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:10,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956111865] [2021-04-16 06:45:10,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:10,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-04-16 06:45:10,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957348437] [2021-04-16 06:45:10,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-04-16 06:45:10,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:10,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-04-16 06:45:10,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:45:10,667 INFO L87 Difference]: Start difference. First operand 409 states and 520 transitions. Second operand has 24 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 23 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:11,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:11,798 INFO L93 Difference]: Finished difference Result 1727 states and 2276 transitions. [2021-04-16 06:45:11,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-04-16 06:45:11,799 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 23 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 404 [2021-04-16 06:45:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:11,803 INFO L225 Difference]: With dead ends: 1727 [2021-04-16 06:45:11,803 INFO L226 Difference]: Without dead ends: 1716 [2021-04-16 06:45:11,803 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 220.9ms TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:45:11,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-04-16 06:45:11,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 412. [2021-04-16 06:45:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 406 states have (on average 1.2758620689655173) internal successors, (518), 406 states have internal predecessors, (518), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 523 transitions. [2021-04-16 06:45:11,870 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 523 transitions. Word has length 404 [2021-04-16 06:45:11,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:11,871 INFO L480 AbstractCegarLoop]: Abstraction has 412 states and 523 transitions. [2021-04-16 06:45:11,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 23 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:11,871 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 523 transitions. [2021-04-16 06:45:11,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-04-16 06:45:11,872 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:11,872 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 100, 20, 20, 20, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:11,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-04-16 06:45:11,872 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:11,873 INFO L82 PathProgramCache]: Analyzing trace with hash 826966420, now seen corresponding path program 46 times [2021-04-16 06:45:11,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:11,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771138563] [2021-04-16 06:45:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:11,877 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:11,878 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:48:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:41,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:41,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:41,233 INFO L142 QuantifierPusher]: treesize reduction 130, result has 56.4 percent of original size [2021-04-16 06:48:41,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-04-16 06:48:41,331 INFO L142 QuantifierPusher]: treesize reduction 130, result has 56.4 percent of original size [2021-04-16 06:48:41,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-04-16 06:48:41,337 INFO L142 QuantifierPusher]: treesize reduction 130, result has 68.0 percent of original size [2021-04-16 06:48:41,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 276 [2021-04-16 06:48:41,350 INFO L142 QuantifierPusher]: treesize reduction 130, result has 56.4 percent of original size [2021-04-16 06:48:41,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-04-16 06:48:41,408 INFO L142 QuantifierPusher]: treesize reduction 130, result has 68.0 percent of original size [2021-04-16 06:48:41,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 276 [2021-04-16 06:48:41,420 INFO L142 QuantifierPusher]: treesize reduction 130, result has 56.4 percent of original size [2021-04-16 06:48:41,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-04-16 06:48:41,430 INFO L142 QuantifierPusher]: treesize reduction 130, result has 68.0 percent of original size [2021-04-16 06:48:41,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 276 [2021-04-16 06:48:41,442 INFO L142 QuantifierPusher]: treesize reduction 130, result has 56.4 percent of original size [2021-04-16 06:48:41,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-04-16 06:48:41,448 INFO L142 QuantifierPusher]: treesize reduction 130, result has 68.0 percent of original size [2021-04-16 06:48:41,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 276 [2021-04-16 06:48:41,459 INFO L142 QuantifierPusher]: treesize reduction 130, result has 56.4 percent of original size [2021-04-16 06:48:41,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-04-16 06:48:41,465 INFO L142 QuantifierPusher]: treesize reduction 130, result has 56.8 percent of original size [2021-04-16 06:48:41,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-04-16 06:48:41,565 INFO L142 QuantifierPusher]: treesize reduction 130, result has 56.8 percent of original size [2021-04-16 06:48:41,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-04-16 06:48:41,573 INFO L142 QuantifierPusher]: treesize reduction 156, result has 61.7 percent of original size [2021-04-16 06:48:41,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-04-16 06:48:41,725 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2021-04-16 06:48:41,732 INFO L142 QuantifierPusher]: treesize reduction 180, result has 61.0 percent of original size [2021-04-16 06:48:41,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-04-16 06:48:41,862 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-04-16 06:48:41,868 INFO L142 QuantifierPusher]: treesize reduction 179, result has 62.3 percent of original size [2021-04-16 06:48:41,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 296 [2021-04-16 06:48:41,891 INFO L142 QuantifierPusher]: treesize reduction 184, result has 60.3 percent of original size [2021-04-16 06:48:41,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 280 [2021-04-16 06:48:42,016 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-04-16 06:48:42,023 INFO L142 QuantifierPusher]: treesize reduction 184, result has 60.3 percent of original size [2021-04-16 06:48:42,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 280 [2021-04-16 06:48:42,028 INFO L142 QuantifierPusher]: treesize reduction 145, result has 61.8 percent of original size [2021-04-16 06:48:42,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-04-16 06:48:42,143 INFO L142 QuantifierPusher]: treesize reduction 145, result has 61.8 percent of original size [2021-04-16 06:48:42,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-04-16 06:48:42,147 INFO L142 QuantifierPusher]: treesize reduction 145, result has 61.8 percent of original size [2021-04-16 06:48:42,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-04-16 06:48:42,285 INFO L142 QuantifierPusher]: treesize reduction 145, result has 61.8 percent of original size [2021-04-16 06:48:42,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-04-16 06:48:42,296 INFO L142 QuantifierPusher]: treesize reduction 145, result has 61.8 percent of original size [2021-04-16 06:48:42,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-04-16 06:48:42,415 INFO L142 QuantifierPusher]: treesize reduction 145, result has 61.8 percent of original size [2021-04-16 06:48:42,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-04-16 06:48:42,426 INFO L142 QuantifierPusher]: treesize reduction 173, result has 61.3 percent of original size [2021-04-16 06:48:42,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-04-16 06:48:42,562 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 74 [2021-04-16 06:48:42,567 INFO L142 QuantifierPusher]: treesize reduction 223, result has 56.4 percent of original size [2021-04-16 06:48:42,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 288 [2021-04-16 06:48:42,711 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 76 [2021-04-16 06:48:42,725 INFO L142 QuantifierPusher]: treesize reduction 202, result has 56.7 percent of original size [2021-04-16 06:48:42,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-04-16 06:48:42,766 INFO L142 QuantifierPusher]: treesize reduction 165, result has 56.8 percent of original size [2021-04-16 06:48:42,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 217 [2021-04-16 06:48:42,904 INFO L142 QuantifierPusher]: treesize reduction 165, result has 56.8 percent of original size [2021-04-16 06:48:42,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 217 [2021-04-16 06:48:42,911 INFO L142 QuantifierPusher]: treesize reduction 184, result has 57.2 percent of original size [2021-04-16 06:48:42,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 246 [2021-04-16 06:48:43,061 INFO L142 QuantifierPusher]: treesize reduction 189, result has 56.5 percent of original size [2021-04-16 06:48:43,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-04-16 06:48:43,206 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-04-16 06:48:43,209 INFO L142 QuantifierPusher]: treesize reduction 160, result has 59.9 percent of original size [2021-04-16 06:48:43,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-04-16 06:48:43,250 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:43,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:43,384 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:43,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:43,388 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:43,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:43,524 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:43,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:43,528 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:43,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:43,673 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 77 [2021-04-16 06:48:43,676 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:43,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:43,680 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:43,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:43,829 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:43,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:43,834 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:43,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:43,978 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:43,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:43,982 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:43,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:44,124 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:44,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:44,128 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:44,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:44,293 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:44,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:44,297 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:44,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:44,462 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:44,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:44,467 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:44,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:44,628 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 77 [2021-04-16 06:48:44,631 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:44,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:44,649 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:44,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:44,811 INFO L142 QuantifierPusher]: treesize reduction 145, result has 60.5 percent of original size [2021-04-16 06:48:44,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-04-16 06:48:44,815 INFO L142 QuantifierPusher]: treesize reduction 184, result has 57.8 percent of original size [2021-04-16 06:48:44,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 252 [2021-04-16 06:48:44,990 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 80 [2021-04-16 06:48:44,993 INFO L142 QuantifierPusher]: treesize reduction 208, result has 54.8 percent of original size [2021-04-16 06:48:44,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 252 [2021-04-16 06:48:45,173 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 66 [2021-04-16 06:48:45,176 INFO L142 QuantifierPusher]: treesize reduction 197, result has 55.1 percent of original size [2021-04-16 06:48:45,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 242 [2021-04-16 06:48:45,280 INFO L142 QuantifierPusher]: treesize reduction 152, result has 56.2 percent of original size [2021-04-16 06:48:45,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-04-16 06:48:45,293 INFO L142 QuantifierPusher]: treesize reduction 152, result has 56.6 percent of original size [2021-04-16 06:48:45,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-04-16 06:48:45,413 INFO L142 QuantifierPusher]: treesize reduction 152, result has 56.6 percent of original size [2021-04-16 06:48:45,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-04-16 06:48:45,417 INFO L142 QuantifierPusher]: treesize reduction 161, result has 66.6 percent of original size [2021-04-16 06:48:45,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 321 [2021-04-16 06:48:45,571 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-04-16 06:48:45,575 INFO L142 QuantifierPusher]: treesize reduction 187, result has 63.4 percent of original size [2021-04-16 06:48:45,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 324 [2021-04-16 06:48:45,727 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-04-16 06:48:45,730 INFO L142 QuantifierPusher]: treesize reduction 166, result has 63.1 percent of original size [2021-04-16 06:48:45,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 284 [2021-04-16 06:48:45,875 INFO L142 QuantifierPusher]: treesize reduction 132, result has 65.4 percent of original size [2021-04-16 06:48:45,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-04-16 06:48:46,006 INFO L142 QuantifierPusher]: treesize reduction 132, result has 65.4 percent of original size [2021-04-16 06:48:46,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-04-16 06:48:46,011 INFO L142 QuantifierPusher]: treesize reduction 132, result has 65.4 percent of original size [2021-04-16 06:48:46,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-04-16 06:48:46,171 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2021-04-16 06:48:46,174 INFO L142 QuantifierPusher]: treesize reduction 132, result has 65.4 percent of original size [2021-04-16 06:48:46,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-04-16 06:48:46,180 INFO L142 QuantifierPusher]: treesize reduction 132, result has 65.4 percent of original size [2021-04-16 06:48:46,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-04-16 06:48:46,318 INFO L142 QuantifierPusher]: treesize reduction 132, result has 65.4 percent of original size [2021-04-16 06:48:46,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-04-16 06:48:46,322 INFO L142 QuantifierPusher]: treesize reduction 132, result has 65.4 percent of original size [2021-04-16 06:48:46,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-04-16 06:48:46,461 INFO L142 QuantifierPusher]: treesize reduction 132, result has 65.4 percent of original size [2021-04-16 06:48:46,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-04-16 06:48:46,466 INFO L142 QuantifierPusher]: treesize reduction 198, result has 57.5 percent of original size [2021-04-16 06:48:46,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 268 [2021-04-16 06:48:46,633 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2021-04-16 06:48:46,637 INFO L142 QuantifierPusher]: treesize reduction 211, result has 56.2 percent of original size [2021-04-16 06:48:46,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-04-16 06:48:46,822 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 68 [2021-04-16 06:48:46,827 INFO L142 QuantifierPusher]: treesize reduction 197, result has 57.7 percent of original size [2021-04-16 06:48:46,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 269 [2021-04-16 06:48:46,977 INFO L142 QuantifierPusher]: treesize reduction 230, result has 58.6 percent of original size [2021-04-16 06:48:46,979 INFO L147 QuantifierPusher]: treesize reduction 5, result has 98.5 percent of original size 320 [2021-04-16 06:48:47,159 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 66 [2021-04-16 06:48:47,167 INFO L142 QuantifierPusher]: treesize reduction 272, result has 58.7 percent of original size [2021-04-16 06:48:47,169 INFO L147 QuantifierPusher]: treesize reduction 24, result has 93.8 percent of original size 362 [2021-04-16 06:48:47,380 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 78 [2021-04-16 06:48:47,384 INFO L142 QuantifierPusher]: treesize reduction 227, result has 56.6 percent of original size [2021-04-16 06:48:47,386 INFO L147 QuantifierPusher]: treesize reduction 16, result has 94.6 percent of original size 280 [2021-04-16 06:48:47,550 INFO L142 QuantifierPusher]: treesize reduction 208, result has 56.2 percent of original size [2021-04-16 06:48:47,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 267 [2021-04-16 06:48:47,707 INFO L142 QuantifierPusher]: treesize reduction 246, result has 50.5 percent of original size [2021-04-16 06:48:47,709 INFO L147 QuantifierPusher]: treesize reduction 7, result has 97.2 percent of original size 244 [2021-04-16 06:48:47,849 INFO L142 QuantifierPusher]: treesize reduction 192, result has 52.5 percent of original size [2021-04-16 06:48:47,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-04-16 06:48:47,854 INFO L142 QuantifierPusher]: treesize reduction 87, result has 53.7 percent of original size [2021-04-16 06:48:47,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:48:47,858 INFO L142 QuantifierPusher]: treesize reduction 87, result has 53.7 percent of original size [2021-04-16 06:48:47,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:48:47,860 INFO L142 QuantifierPusher]: treesize reduction 87, result has 53.7 percent of original size [2021-04-16 06:48:47,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:48:47,870 INFO L142 QuantifierPusher]: treesize reduction 87, result has 53.7 percent of original size [2021-04-16 06:48:47,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:48:47,873 INFO L142 QuantifierPusher]: treesize reduction 87, result has 53.7 percent of original size [2021-04-16 06:48:47,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:48:47,876 INFO L142 QuantifierPusher]: treesize reduction 87, result has 53.7 percent of original size [2021-04-16 06:48:47,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:48:47,879 INFO L142 QuantifierPusher]: treesize reduction 87, result has 53.7 percent of original size [2021-04-16 06:48:47,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:48:47,882 INFO L142 QuantifierPusher]: treesize reduction 87, result has 53.7 percent of original size [2021-04-16 06:48:47,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:48:47,885 INFO L142 QuantifierPusher]: treesize reduction 87, result has 53.7 percent of original size [2021-04-16 06:48:47,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:48:47,888 INFO L142 QuantifierPusher]: treesize reduction 87, result has 53.7 percent of original size [2021-04-16 06:48:47,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:48:47,892 INFO L142 QuantifierPusher]: treesize reduction 87, result has 53.7 percent of original size [2021-04-16 06:48:47,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:48:47,895 INFO L142 QuantifierPusher]: treesize reduction 87, result has 53.7 percent of original size [2021-04-16 06:48:47,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:48:47,897 INFO L142 QuantifierPusher]: treesize reduction 87, result has 54.5 percent of original size [2021-04-16 06:48:47,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-04-16 06:48:47,901 INFO L142 QuantifierPusher]: treesize reduction 87, result has 54.5 percent of original size [2021-04-16 06:48:47,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-04-16 06:48:47,904 INFO L142 QuantifierPusher]: treesize reduction 113, result has 52.3 percent of original size [2021-04-16 06:48:47,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-04-16 06:48:47,908 INFO L142 QuantifierPusher]: treesize reduction 114, result has 57.3 percent of original size [2021-04-16 06:48:47,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-04-16 06:48:47,912 INFO L142 QuantifierPusher]: treesize reduction 114, result has 56.5 percent of original size [2021-04-16 06:48:47,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:48:47,915 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,918 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,921 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,924 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,927 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,931 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,934 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,937 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,940 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,943 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,946 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,949 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,953 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,956 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,959 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,962 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,965 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,968 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,971 INFO L142 QuantifierPusher]: treesize reduction 88, result has 52.4 percent of original size [2021-04-16 06:48:47,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-04-16 06:48:47,974 INFO L142 QuantifierPusher]: treesize reduction 88, result has 53.2 percent of original size [2021-04-16 06:48:47,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-04-16 06:48:47,977 INFO L142 QuantifierPusher]: treesize reduction 88, result has 53.2 percent of original size [2021-04-16 06:48:47,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-04-16 06:48:47,981 INFO L142 QuantifierPusher]: treesize reduction 120, result has 56.2 percent of original size [2021-04-16 06:48:47,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-04-16 06:48:47,987 INFO L142 QuantifierPusher]: treesize reduction 118, result has 56.1 percent of original size [2021-04-16 06:48:47,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-04-16 06:48:47,995 INFO L142 QuantifierPusher]: treesize reduction 120, result has 56.2 percent of original size [2021-04-16 06:48:47,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-04-16 06:48:47,999 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,002 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,005 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,007 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,010 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,022 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,026 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,035 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,041 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,044 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,046 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,049 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,051 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,054 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,057 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,059 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,062 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,064 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,067 INFO L142 QuantifierPusher]: treesize reduction 84, result has 49.1 percent of original size [2021-04-16 06:48:48,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,069 INFO L142 QuantifierPusher]: treesize reduction 84, result has 50.0 percent of original size [2021-04-16 06:48:48,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:48:48,072 INFO L142 QuantifierPusher]: treesize reduction 84, result has 50.0 percent of original size [2021-04-16 06:48:48,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:48:48,075 INFO L142 QuantifierPusher]: treesize reduction 102, result has 52.8 percent of original size [2021-04-16 06:48:48,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-04-16 06:48:48,078 INFO L142 QuantifierPusher]: treesize reduction 102, result has 52.8 percent of original size [2021-04-16 06:48:48,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-04-16 06:48:48,081 INFO L142 QuantifierPusher]: treesize reduction 78, result has 50.9 percent of original size [2021-04-16 06:48:48,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-16 06:48:48,083 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:48:48,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:48,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:48,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:48,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:48:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:48:48,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:48:48,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:48:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:48:48,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771138563] [2021-04-16 06:48:48,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:48:48,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2021-04-16 06:48:48,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433182464] [2021-04-16 06:48:48,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-04-16 06:48:48,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:48:48,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-04-16 06:48:48,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1818, Unknown=0, NotChecked=0, Total=1980 [2021-04-16 06:48:48,146 INFO L87 Difference]: Start difference. First operand 412 states and 523 transitions. Second operand has 45 states, 45 states have (on average 2.577777777777778) internal successors, (116), 44 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:49,715 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2021-04-16 06:48:51,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:48:51,572 INFO L93 Difference]: Finished difference Result 825 states and 1050 transitions. [2021-04-16 06:48:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-04-16 06:48:51,573 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.577777777777778) internal successors, (116), 44 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 407 [2021-04-16 06:48:51,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:48:51,574 INFO L225 Difference]: With dead ends: 825 [2021-04-16 06:48:51,574 INFO L226 Difference]: Without dead ends: 463 [2021-04-16 06:48:51,575 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 30 SyntacticMatches, 74 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 7297.5ms TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2021-04-16 06:48:51,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-04-16 06:48:51,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 427. [2021-04-16 06:48:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 421 states have (on average 1.2660332541567696) internal successors, (533), 421 states have internal predecessors, (533), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:48:51,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 538 transitions. [2021-04-16 06:48:51,686 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 538 transitions. Word has length 407 [2021-04-16 06:48:51,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:48:51,687 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 538 transitions. [2021-04-16 06:48:51,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.577777777777778) internal successors, (116), 44 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:48:51,687 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 538 transitions. [2021-04-16 06:48:51,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-04-16 06:48:51,688 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:48:51,688 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 95, 20, 20, 20, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:48:51,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-04-16 06:48:51,688 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:48:51,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:48:51,689 INFO L82 PathProgramCache]: Analyzing trace with hash 406682450, now seen corresponding path program 1 times [2021-04-16 06:48:51,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:48:51,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724371202] [2021-04-16 06:48:51,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:48:51,695 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:48:51,696 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:52:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:13,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:13,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:13,439 INFO L142 QuantifierPusher]: treesize reduction 139, result has 54.1 percent of original size [2021-04-16 06:52:13,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-04-16 06:52:13,531 INFO L142 QuantifierPusher]: treesize reduction 139, result has 54.1 percent of original size [2021-04-16 06:52:13,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-04-16 06:52:13,536 INFO L142 QuantifierPusher]: treesize reduction 139, result has 65.9 percent of original size [2021-04-16 06:52:13,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 269 [2021-04-16 06:52:13,638 INFO L142 QuantifierPusher]: treesize reduction 139, result has 53.7 percent of original size [2021-04-16 06:52:13,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-04-16 06:52:13,649 INFO L142 QuantifierPusher]: treesize reduction 139, result has 65.9 percent of original size [2021-04-16 06:52:13,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 269 [2021-04-16 06:52:13,653 INFO L142 QuantifierPusher]: treesize reduction 139, result has 53.7 percent of original size [2021-04-16 06:52:13,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-04-16 06:52:13,664 INFO L142 QuantifierPusher]: treesize reduction 139, result has 65.9 percent of original size [2021-04-16 06:52:13,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 269 [2021-04-16 06:52:13,668 INFO L142 QuantifierPusher]: treesize reduction 139, result has 53.7 percent of original size [2021-04-16 06:52:13,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-04-16 06:52:13,680 INFO L142 QuantifierPusher]: treesize reduction 139, result has 65.9 percent of original size [2021-04-16 06:52:13,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 269 [2021-04-16 06:52:13,683 INFO L142 QuantifierPusher]: treesize reduction 139, result has 53.7 percent of original size [2021-04-16 06:52:13,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-04-16 06:52:13,694 INFO L142 QuantifierPusher]: treesize reduction 139, result has 54.1 percent of original size [2021-04-16 06:52:13,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-04-16 06:52:13,845 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2021-04-16 06:52:13,848 INFO L142 QuantifierPusher]: treesize reduction 139, result has 54.1 percent of original size [2021-04-16 06:52:13,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-04-16 06:52:13,853 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:13,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:13,969 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 70 [2021-04-16 06:52:13,972 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:13,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:13,976 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:13,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:14,098 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2021-04-16 06:52:14,101 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:14,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:14,105 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:14,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:14,225 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2021-04-16 06:52:14,228 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:14,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:14,232 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:14,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:14,353 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2021-04-16 06:52:14,357 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:14,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:14,365 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:14,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:14,498 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2021-04-16 06:52:14,502 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:14,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:14,506 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:14,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:14,631 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:14,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:14,635 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:14,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:14,766 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:14,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:14,770 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:14,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:14,901 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:14,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:15,040 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-04-16 06:52:15,043 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:15,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:15,047 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:15,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:15,180 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:15,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:15,185 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:15,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:15,331 INFO L142 QuantifierPusher]: treesize reduction 114, result has 69.5 percent of original size [2021-04-16 06:52:15,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-04-16 06:52:15,335 INFO L142 QuantifierPusher]: treesize reduction 140, result has 65.8 percent of original size [2021-04-16 06:52:15,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 269 [2021-04-16 06:52:15,488 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 71 [2021-04-16 06:52:15,493 INFO L142 QuantifierPusher]: treesize reduction 142, result has 68.1 percent of original size [2021-04-16 06:52:15,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-04-16 06:52:15,655 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 76 [2021-04-16 06:52:15,662 INFO L142 QuantifierPusher]: treesize reduction 145, result has 70.4 percent of original size [2021-04-16 06:52:15,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-04-16 06:52:15,727 INFO L142 QuantifierPusher]: treesize reduction 193, result has 61.6 percent of original size [2021-04-16 06:52:15,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 309 [2021-04-16 06:52:15,889 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 69 [2021-04-16 06:52:15,894 INFO L142 QuantifierPusher]: treesize reduction 166, result has 70.1 percent of original size [2021-04-16 06:52:15,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 390 [2021-04-16 06:52:16,076 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 68 [2021-04-16 06:52:16,080 INFO L142 QuantifierPusher]: treesize reduction 158, result has 67.6 percent of original size [2021-04-16 06:52:16,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 330 [2021-04-16 06:52:16,122 INFO L142 QuantifierPusher]: treesize reduction 204, result has 64.4 percent of original size [2021-04-16 06:52:16,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 369 [2021-04-16 06:52:16,287 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 65 [2021-04-16 06:52:16,292 INFO L142 QuantifierPusher]: treesize reduction 247, result has 63.3 percent of original size [2021-04-16 06:52:16,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 426 [2021-04-16 06:52:16,496 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 87 [2021-04-16 06:52:16,501 INFO L142 QuantifierPusher]: treesize reduction 218, result has 60.6 percent of original size [2021-04-16 06:52:16,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-04-16 06:52:16,647 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 68 [2021-04-16 06:52:16,653 INFO L142 QuantifierPusher]: treesize reduction 210, result has 59.1 percent of original size [2021-04-16 06:52:16,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-04-16 06:52:16,799 INFO L142 QuantifierPusher]: treesize reduction 233, result has 56.8 percent of original size [2021-04-16 06:52:16,801 INFO L147 QuantifierPusher]: treesize reduction 7, result has 97.7 percent of original size 299 [2021-04-16 06:52:16,940 INFO L142 QuantifierPusher]: treesize reduction 195, result has 55.5 percent of original size [2021-04-16 06:52:16,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-04-16 06:52:16,947 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:16,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:16,952 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:16,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:16,956 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:16,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:16,961 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:16,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:16,965 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:16,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:16,968 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:16,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:16,972 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:16,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:16,975 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:16,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:16,979 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:16,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:16,982 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:16,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:16,986 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:16,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:16,991 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:16,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:16,995 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:16,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:16,999 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,004 INFO L142 QuantifierPusher]: treesize reduction 273, result has 31.6 percent of original size [2021-04-16 06:52:17,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,010 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,014 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,018 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,022 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,026 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,030 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,035 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,040 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,044 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,047 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,051 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,055 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,060 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,065 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,070 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,076 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,083 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,091 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,095 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,102 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,107 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,112 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,116 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,120 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,162 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,167 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,171 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,176 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,182 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.3 percent of original size [2021-04-16 06:52:17,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-04-16 06:52:17,187 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.8 percent of original size [2021-04-16 06:52:17,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-04-16 06:52:17,193 INFO L142 QuantifierPusher]: treesize reduction 94, result has 57.8 percent of original size [2021-04-16 06:52:17,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-04-16 06:52:17,198 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,204 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,209 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,215 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,220 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,226 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,231 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,236 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,242 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,247 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,252 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,257 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,261 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,265 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,269 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,273 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,278 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,282 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,287 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,291 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,296 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.8 percent of original size [2021-04-16 06:52:17,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-04-16 06:52:17,301 INFO L142 QuantifierPusher]: treesize reduction 120, result has 55.4 percent of original size [2021-04-16 06:52:17,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-04-16 06:52:17,306 INFO L142 QuantifierPusher]: treesize reduction 118, result has 60.9 percent of original size [2021-04-16 06:52:17,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-04-16 06:52:17,312 INFO L142 QuantifierPusher]: treesize reduction 114, result has 64.2 percent of original size [2021-04-16 06:52:17,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-04-16 06:52:17,330 INFO L142 QuantifierPusher]: treesize reduction 90, result has 56.3 percent of original size [2021-04-16 06:52:17,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-04-16 06:52:17,335 INFO L142 QuantifierPusher]: treesize reduction 90, result has 56.3 percent of original size [2021-04-16 06:52:17,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-04-16 06:52:17,339 INFO L142 QuantifierPusher]: treesize reduction 90, result has 56.3 percent of original size [2021-04-16 06:52:17,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-04-16 06:52:17,344 INFO L142 QuantifierPusher]: treesize reduction 90, result has 56.3 percent of original size [2021-04-16 06:52:17,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-04-16 06:52:17,348 INFO L142 QuantifierPusher]: treesize reduction 90, result has 56.3 percent of original size [2021-04-16 06:52:17,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-04-16 06:52:17,352 INFO L142 QuantifierPusher]: treesize reduction 90, result has 56.3 percent of original size [2021-04-16 06:52:17,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-04-16 06:52:17,356 INFO L142 QuantifierPusher]: treesize reduction 90, result has 56.3 percent of original size [2021-04-16 06:52:17,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-04-16 06:52:17,360 INFO L142 QuantifierPusher]: treesize reduction 90, result has 56.3 percent of original size [2021-04-16 06:52:17,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-04-16 06:52:17,364 INFO L142 QuantifierPusher]: treesize reduction 90, result has 56.9 percent of original size [2021-04-16 06:52:17,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-04-16 06:52:17,369 INFO L142 QuantifierPusher]: treesize reduction 90, result has 56.9 percent of original size [2021-04-16 06:52:17,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-04-16 06:52:17,373 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,377 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,382 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,387 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,391 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,396 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,401 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,405 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,410 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,415 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,419 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,423 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,428 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,433 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,438 INFO L142 QuantifierPusher]: treesize reduction 84, result has 63.8 percent of original size [2021-04-16 06:52:17,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-04-16 06:52:17,443 INFO L142 QuantifierPusher]: treesize reduction 123, result has 59.1 percent of original size [2021-04-16 06:52:17,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-04-16 06:52:17,447 INFO L142 QuantifierPusher]: treesize reduction 128, result has 59.2 percent of original size [2021-04-16 06:52:17,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-04-16 06:52:17,454 INFO L142 QuantifierPusher]: treesize reduction 116, result has 59.2 percent of original size [2021-04-16 06:52:17,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-04-16 06:52:17,458 INFO L142 QuantifierPusher]: treesize reduction 67, result has 64.4 percent of original size [2021-04-16 06:52:17,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-04-16 06:52:17,463 INFO L142 QuantifierPusher]: treesize reduction 67, result has 64.4 percent of original size [2021-04-16 06:52:17,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-04-16 06:52:17,468 INFO L142 QuantifierPusher]: treesize reduction 67, result has 64.4 percent of original size [2021-04-16 06:52:17,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-04-16 06:52:17,472 INFO L142 QuantifierPusher]: treesize reduction 67, result has 64.4 percent of original size [2021-04-16 06:52:17,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-04-16 06:52:17,476 INFO L142 QuantifierPusher]: treesize reduction 109, result has 56.4 percent of original size [2021-04-16 06:52:17,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-04-16 06:52:17,480 INFO L142 QuantifierPusher]: treesize reduction 102, result has 58.5 percent of original size [2021-04-16 06:52:17,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-04-16 06:52:17,486 INFO L142 QuantifierPusher]: treesize reduction 97, result has 57.1 percent of original size [2021-04-16 06:52:17,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-04-16 06:52:17,489 INFO L142 QuantifierPusher]: treesize reduction 67, result has 55.6 percent of original size [2021-04-16 06:52:17,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:52:17,493 INFO L142 QuantifierPusher]: treesize reduction 67, result has 55.6 percent of original size [2021-04-16 06:52:17,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:52:17,495 INFO L142 QuantifierPusher]: treesize reduction 67, result has 55.6 percent of original size [2021-04-16 06:52:17,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:52:17,498 INFO L142 QuantifierPusher]: treesize reduction 67, result has 55.6 percent of original size [2021-04-16 06:52:17,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:52:17,502 INFO L142 QuantifierPusher]: treesize reduction 67, result has 55.6 percent of original size [2021-04-16 06:52:17,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:52:17,505 INFO L142 QuantifierPusher]: treesize reduction 67, result has 55.6 percent of original size [2021-04-16 06:52:17,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:52:17,510 INFO L142 QuantifierPusher]: treesize reduction 67, result has 55.6 percent of original size [2021-04-16 06:52:17,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:52:17,514 INFO L142 QuantifierPusher]: treesize reduction 67, result has 55.6 percent of original size [2021-04-16 06:52:17,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 06:52:17,517 INFO L142 QuantifierPusher]: treesize reduction 67, result has 56.5 percent of original size [2021-04-16 06:52:17,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-04-16 06:52:17,521 INFO L142 QuantifierPusher]: treesize reduction 67, result has 57.9 percent of original size [2021-04-16 06:52:17,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:52:17,527 INFO L142 QuantifierPusher]: treesize reduction 67, result has 57.9 percent of original size [2021-04-16 06:52:17,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:52:17,530 INFO L142 QuantifierPusher]: treesize reduction 67, result has 57.9 percent of original size [2021-04-16 06:52:17,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:52:17,533 INFO L142 QuantifierPusher]: treesize reduction 67, result has 57.9 percent of original size [2021-04-16 06:52:17,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:52:17,536 INFO L142 QuantifierPusher]: treesize reduction 67, result has 57.9 percent of original size [2021-04-16 06:52:17,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:52:17,540 INFO L142 QuantifierPusher]: treesize reduction 67, result has 57.9 percent of original size [2021-04-16 06:52:17,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:52:17,543 INFO L142 QuantifierPusher]: treesize reduction 67, result has 57.9 percent of original size [2021-04-16 06:52:17,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:52:17,546 INFO L142 QuantifierPusher]: treesize reduction 67, result has 57.9 percent of original size [2021-04-16 06:52:17,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:52:17,549 INFO L142 QuantifierPusher]: treesize reduction 67, result has 57.9 percent of original size [2021-04-16 06:52:17,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:52:17,553 INFO L142 QuantifierPusher]: treesize reduction 67, result has 57.9 percent of original size [2021-04-16 06:52:17,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:52:17,557 INFO L142 QuantifierPusher]: treesize reduction 67, result has 57.9 percent of original size [2021-04-16 06:52:17,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-04-16 06:52:17,561 INFO L142 QuantifierPusher]: treesize reduction 91, result has 55.0 percent of original size [2021-04-16 06:52:17,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-04-16 06:52:17,564 INFO L142 QuantifierPusher]: treesize reduction 91, result has 52.6 percent of original size [2021-04-16 06:52:17,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-16 06:52:17,568 INFO L142 QuantifierPusher]: treesize reduction 65, result has 54.5 percent of original size [2021-04-16 06:52:17,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-04-16 06:52:17,571 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:52:17,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:17,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:17,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:17,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:52:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:52:17,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:52:17,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:52:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:52:17,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724371202] [2021-04-16 06:52:17,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:52:17,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-04-16 06:52:17,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71635474] [2021-04-16 06:52:17,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-04-16 06:52:17,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:52:17,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-04-16 06:52:17,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-04-16 06:52:17,623 INFO L87 Difference]: Start difference. First operand 427 states and 538 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:19,676 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2021-04-16 06:52:20,536 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 99 [2021-04-16 06:52:20,939 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2021-04-16 06:52:21,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:52:21,245 INFO L93 Difference]: Finished difference Result 804 states and 1012 transitions. [2021-04-16 06:52:21,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-04-16 06:52:21,245 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 407 [2021-04-16 06:52:21,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:52:21,247 INFO L225 Difference]: With dead ends: 804 [2021-04-16 06:52:21,247 INFO L226 Difference]: Without dead ends: 451 [2021-04-16 06:52:21,248 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 19 SyntacticMatches, 135 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 5666.6ms TimeCoverageRelationStatistics Valid=210, Invalid=2340, Unknown=0, NotChecked=0, Total=2550 [2021-04-16 06:52:21,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-04-16 06:52:21,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 442. [2021-04-16 06:52:21,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 436 states have (on average 1.2568807339449541) internal successors, (548), 436 states have internal predecessors, (548), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:52:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 553 transitions. [2021-04-16 06:52:21,375 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 553 transitions. Word has length 407 [2021-04-16 06:52:21,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:52:21,376 INFO L480 AbstractCegarLoop]: Abstraction has 442 states and 553 transitions. [2021-04-16 06:52:21,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:52:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 553 transitions. [2021-04-16 06:52:21,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-04-16 06:52:21,377 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:52:21,377 INFO L519 BasicCegarLoop]: trace histogram [100, 100, 90, 20, 20, 20, 10, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:52:21,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-04-16 06:52:21,378 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:52:21,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:52:21,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1000089300, now seen corresponding path program 2 times [2021-04-16 06:52:21,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:52:21,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268052806] [2021-04-16 06:52:21,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:52:21,385 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:52:21,386 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation