/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/s3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:02:10,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:02:10,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:02:10,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:02:10,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:02:10,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:02:10,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:02:10,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:02:10,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:02:10,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:02:10,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:02:10,328 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:02:10,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:02:10,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:02:10,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:02:10,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:02:10,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:02:10,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:02:10,329 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:02:10,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:02:10,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:02:10,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:02:10,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:02:10,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:02:10,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:02:10,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:02:10,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:02:10,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:02:10,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:02:10,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:02:10,331 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:02:10,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:02:10,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:02:10,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:02:10,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:02:10,609 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:02:10,617 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:02:10,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/s3.i [2021-05-02 23:02:10,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f89c814e4/5ce8d5cbf3e5404eab34cb63c360e2da/FLAG476b575d6 [2021-05-02 23:02:11,128 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:02:11,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/s3.i [2021-05-02 23:02:11,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f89c814e4/5ce8d5cbf3e5404eab34cb63c360e2da/FLAG476b575d6 [2021-05-02 23:02:11,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f89c814e4/5ce8d5cbf3e5404eab34cb63c360e2da [2021-05-02 23:02:11,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:02:11,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:02:11,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:02:11,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:02:11,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:02:11,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:02:11" (1/1) ... [2021-05-02 23:02:11,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ade1115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:02:11, skipping insertion in model container [2021-05-02 23:02:11,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:02:11" (1/1) ... [2021-05-02 23:02:11,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:02:11,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:02:11,780 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/s3.i[63567,63580] [2021-05-02 23:02:11,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:02:11,795 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:02:11,857 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/s3.i[63567,63580] [2021-05-02 23:02:11,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:02:11,872 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:02:11,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:02:11 WrapperNode [2021-05-02 23:02:11,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:02:11,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:02:11,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:02:11,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:02:11,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:02:11" (1/1) ... [2021-05-02 23:02:11,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:02:11" (1/1) ... [2021-05-02 23:02:11,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:02:11" (1/1) ... [2021-05-02 23:02:11,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:02:11" (1/1) ... [2021-05-02 23:02:11,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:02:11" (1/1) ... [2021-05-02 23:02:11,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:02:11" (1/1) ... [2021-05-02 23:02:11,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:02:11" (1/1) ... [2021-05-02 23:02:11,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:02:11,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:02:11,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:02:11,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:02:11,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:02:11" (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 [2021-05-02 23:02:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:02:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:02:12,016 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:02:12,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_client_method [2021-05-02 23:02:12,016 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_client_method [2021-05-02 23:02:12,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:02:12,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2021-05-02 23:02:12,016 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2021-05-02 23:02:12,016 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-05-02 23:02:12,017 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-05-02 23:02:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:02:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:02:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:02:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:02:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-05-02 23:02:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 23:02:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2021-05-02 23:02:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-05-02 23:02:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_client_method [2021-05-02 23:02:12,019 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2021-05-02 23:02:12,019 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_client_method [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:02:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-05-02 23:02:12,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-05-02 23:02:12,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-05-02 23:02:12,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-05-02 23:02:12,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:02:12,413 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-05-02 23:02:12,939 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-05-02 23:02:12,939 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-05-02 23:02:12,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:02:12,958 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 23:02:12,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:02:12 BoogieIcfgContainer [2021-05-02 23:02:12,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:02:12,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:02:12,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:02:12,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:02:12,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:02:11" (1/3) ... [2021-05-02 23:02:12,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56be0caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:02:12, skipping insertion in model container [2021-05-02 23:02:12,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:02:11" (2/3) ... [2021-05-02 23:02:12,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56be0caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:02:12, skipping insertion in model container [2021-05-02 23:02:12,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:02:12" (3/3) ... [2021-05-02 23:02:12,964 INFO L111 eAbstractionObserver]: Analyzing ICFG s3.i [2021-05-02 23:02:12,968 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:02:12,971 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:02:12,983 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:02:12,996 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:02:12,997 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:02:12,997 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:02:12,997 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:02:12,997 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:02:12,997 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:02:12,997 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:02:12,997 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:02:13,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 132 states have (on average 1.6742424242424243) internal successors, (221), 133 states have internal predecessors, (221), 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) [2021-05-02 23:02:13,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-02 23:02:13,016 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:02:13,016 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:02:13,017 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:02:13,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:02:13,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1896540148, now seen corresponding path program 1 times [2021-05-02 23:02:13,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:02:13,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711390999] [2021-05-02 23:02:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:02:13,070 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:02:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:13,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:02:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:02:13,329 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:02:13,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711390999] [2021-05-02 23:02:13,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [711390999] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:02:13,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:02:13,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 23:02:13,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081545759] [2021-05-02 23:02:13,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 23:02:13,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:02:13,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 23:02:13,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 23:02:13,356 INFO L87 Difference]: Start difference. First operand has 140 states, 132 states have (on average 1.6742424242424243) internal successors, (221), 133 states have internal predecessors, (221), 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 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:13,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:02:13,937 INFO L93 Difference]: Finished difference Result 385 states and 637 transitions. [2021-05-02 23:02:13,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 23:02:13,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (3), 2 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 30 [2021-05-02 23:02:13,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:02:13,948 INFO L225 Difference]: With dead ends: 385 [2021-05-02 23:02:13,948 INFO L226 Difference]: Without dead ends: 223 [2021-05-02 23:02:13,951 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 23:02:13,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-05-02 23:02:13,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-05-02 23:02:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 218 states have (on average 1.481651376146789) internal successors, (323), 218 states have internal predecessors, (323), 3 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) [2021-05-02 23:02:13,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 327 transitions. [2021-05-02 23:02:13,988 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 327 transitions. Word has length 30 [2021-05-02 23:02:13,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:02:13,988 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 327 transitions. [2021-05-02 23:02:13,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:13,988 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 327 transitions. [2021-05-02 23:02:13,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 23:02:13,990 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:02:13,990 INFO L523 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:02:13,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:02:13,990 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:02:13,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:02:13,991 INFO L82 PathProgramCache]: Analyzing trace with hash 969835136, now seen corresponding path program 1 times [2021-05-02 23:02:13,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:02:13,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131820934] [2021-05-02 23:02:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:02:14,017 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-02 23:02:14,019 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:02:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:14,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:02:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:02:14,126 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:02:14,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131820934] [2021-05-02 23:02:14,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2131820934] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:02:14,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:02:14,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 23:02:14,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258596320] [2021-05-02 23:02:14,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 23:02:14,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:02:14,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 23:02:14,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 23:02:14,128 INFO L87 Difference]: Start difference. First operand 223 states and 327 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:14,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:02:14,594 INFO L93 Difference]: Finished difference Result 432 states and 642 transitions. [2021-05-02 23:02:14,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 23:02:14,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (3), 2 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 45 [2021-05-02 23:02:14,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:02:14,597 INFO L225 Difference]: With dead ends: 432 [2021-05-02 23:02:14,597 INFO L226 Difference]: Without dead ends: 325 [2021-05-02 23:02:14,598 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 23:02:14,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-05-02 23:02:14,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2021-05-02 23:02:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 320 states have (on average 1.475) internal successors, (472), 320 states have internal predecessors, (472), 3 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) [2021-05-02 23:02:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 476 transitions. [2021-05-02 23:02:14,622 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 476 transitions. Word has length 45 [2021-05-02 23:02:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:02:14,622 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 476 transitions. [2021-05-02 23:02:14,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:14,623 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 476 transitions. [2021-05-02 23:02:14,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 23:02:14,625 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:02:14,625 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:02:14,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:02:14,625 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:02:14,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:02:14,626 INFO L82 PathProgramCache]: Analyzing trace with hash -2112862728, now seen corresponding path program 1 times [2021-05-02 23:02:14,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:02:14,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077816164] [2021-05-02 23:02:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:02:14,646 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-02 23:02:14,648 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:02:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:14,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:02:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:02:14,742 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:02:14,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077816164] [2021-05-02 23:02:14,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2077816164] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:02:14,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:02:14,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 23:02:14,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388463786] [2021-05-02 23:02:14,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 23:02:14,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:02:14,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 23:02:14,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:02:14,744 INFO L87 Difference]: Start difference. First operand 325 states and 476 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:15,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:02:15,323 INFO L93 Difference]: Finished difference Result 825 states and 1216 transitions. [2021-05-02 23:02:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 23:02:15,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (3), 2 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 63 [2021-05-02 23:02:15,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:02:15,325 INFO L225 Difference]: With dead ends: 825 [2021-05-02 23:02:15,325 INFO L226 Difference]: Without dead ends: 513 [2021-05-02 23:02:15,327 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:02:15,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-05-02 23:02:15,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 375. [2021-05-02 23:02:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 370 states have (on average 1.508108108108108) internal successors, (558), 370 states have internal predecessors, (558), 3 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) [2021-05-02 23:02:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 562 transitions. [2021-05-02 23:02:15,343 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 562 transitions. Word has length 63 [2021-05-02 23:02:15,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:02:15,343 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 562 transitions. [2021-05-02 23:02:15,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 562 transitions. [2021-05-02 23:02:15,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 23:02:15,344 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:02:15,345 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:02:15,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 23:02:15,345 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:02:15,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:02:15,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2048091062, now seen corresponding path program 1 times [2021-05-02 23:02:15,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:02:15,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124590577] [2021-05-02 23:02:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:02:15,366 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-02 23:02:15,368 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:02:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:02:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:02:15,441 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:02:15,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124590577] [2021-05-02 23:02:15,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [124590577] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:02:15,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:02:15,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 23:02:15,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828622338] [2021-05-02 23:02:15,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 23:02:15,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:02:15,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 23:02:15,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:02:15,442 INFO L87 Difference]: Start difference. First operand 375 states and 562 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:15,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:02:15,876 INFO L93 Difference]: Finished difference Result 821 states and 1232 transitions. [2021-05-02 23:02:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 23:02:15,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (3), 2 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 63 [2021-05-02 23:02:15,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:02:15,878 INFO L225 Difference]: With dead ends: 821 [2021-05-02 23:02:15,879 INFO L226 Difference]: Without dead ends: 459 [2021-05-02 23:02:15,879 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:02:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-05-02 23:02:15,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 415. [2021-05-02 23:02:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 410 states have (on average 1.526829268292683) internal successors, (626), 410 states have internal predecessors, (626), 3 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) [2021-05-02 23:02:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 630 transitions. [2021-05-02 23:02:15,892 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 630 transitions. Word has length 63 [2021-05-02 23:02:15,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:02:15,893 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 630 transitions. [2021-05-02 23:02:15,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:15,893 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 630 transitions. [2021-05-02 23:02:15,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-02 23:02:15,894 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:02:15,894 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:02:15,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 23:02:15,895 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:02:15,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:02:15,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1078652993, now seen corresponding path program 1 times [2021-05-02 23:02:15,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:02:15,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378868634] [2021-05-02 23:02:15,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:02:15,915 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-02 23:02:15,916 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:02:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:15,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:02:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:02:16,003 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:02:16,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378868634] [2021-05-02 23:02:16,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [378868634] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:02:16,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:02:16,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 23:02:16,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739430620] [2021-05-02 23:02:16,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 23:02:16,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:02:16,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 23:02:16,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:02:16,004 INFO L87 Difference]: Start difference. First operand 415 states and 630 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:16,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:02:16,581 INFO L93 Difference]: Finished difference Result 949 states and 1429 transitions. [2021-05-02 23:02:16,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 23:02:16,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (3), 2 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 64 [2021-05-02 23:02:16,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:02:16,583 INFO L225 Difference]: With dead ends: 949 [2021-05-02 23:02:16,583 INFO L226 Difference]: Without dead ends: 547 [2021-05-02 23:02:16,584 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:02:16,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-05-02 23:02:16,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 417. [2021-05-02 23:02:16,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 412 states have (on average 1.5242718446601942) internal successors, (628), 412 states have internal predecessors, (628), 3 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) [2021-05-02 23:02:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 632 transitions. [2021-05-02 23:02:16,599 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 632 transitions. Word has length 64 [2021-05-02 23:02:16,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:02:16,599 INFO L480 AbstractCegarLoop]: Abstraction has 417 states and 632 transitions. [2021-05-02 23:02:16,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:16,599 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 632 transitions. [2021-05-02 23:02:16,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 23:02:16,600 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:02:16,600 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:02:16,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-02 23:02:16,600 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:02:16,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:02:16,601 INFO L82 PathProgramCache]: Analyzing trace with hash 917238579, now seen corresponding path program 1 times [2021-05-02 23:02:16,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:02:16,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820468494] [2021-05-02 23:02:16,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:02:16,622 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-02 23:02:16,623 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:02:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:16,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:02:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:02:16,724 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:02:16,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820468494] [2021-05-02 23:02:16,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [820468494] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:02:16,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:02:16,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 23:02:16,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886033754] [2021-05-02 23:02:16,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 23:02:16,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:02:16,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 23:02:16,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:02:16,725 INFO L87 Difference]: Start difference. First operand 417 states and 632 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:17,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:02:17,292 INFO L93 Difference]: Finished difference Result 951 states and 1429 transitions. [2021-05-02 23:02:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 23:02:17,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (3), 2 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 65 [2021-05-02 23:02:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:02:17,295 INFO L225 Difference]: With dead ends: 951 [2021-05-02 23:02:17,295 INFO L226 Difference]: Without dead ends: 547 [2021-05-02 23:02:17,297 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:02:17,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-05-02 23:02:17,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 419. [2021-05-02 23:02:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 414 states have (on average 1.5217391304347827) internal successors, (630), 414 states have internal predecessors, (630), 3 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) [2021-05-02 23:02:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 634 transitions. [2021-05-02 23:02:17,311 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 634 transitions. Word has length 65 [2021-05-02 23:02:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:02:17,312 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 634 transitions. [2021-05-02 23:02:17,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 634 transitions. [2021-05-02 23:02:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-02 23:02:17,313 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:02:17,313 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:02:17,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-02 23:02:17,314 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:02:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:02:17,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1634852198, now seen corresponding path program 1 times [2021-05-02 23:02:17,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:02:17,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104349244] [2021-05-02 23:02:17,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:02:17,333 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-02 23:02:17,336 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:02:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:02:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:02:17,451 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:02:17,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104349244] [2021-05-02 23:02:17,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [104349244] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:02:17,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:02:17,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 23:02:17,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241552636] [2021-05-02 23:02:17,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 23:02:17,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:02:17,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 23:02:17,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:02:17,454 INFO L87 Difference]: Start difference. First operand 419 states and 634 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:17,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:02:17,983 INFO L93 Difference]: Finished difference Result 943 states and 1417 transitions. [2021-05-02 23:02:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 23:02:17,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (3), 2 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 66 [2021-05-02 23:02:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:02:17,986 INFO L225 Difference]: With dead ends: 943 [2021-05-02 23:02:17,986 INFO L226 Difference]: Without dead ends: 537 [2021-05-02 23:02:17,987 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:02:17,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-05-02 23:02:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 421. [2021-05-02 23:02:18,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 416 states have (on average 1.5192307692307692) internal successors, (632), 416 states have internal predecessors, (632), 3 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) [2021-05-02 23:02:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 636 transitions. [2021-05-02 23:02:18,001 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 636 transitions. Word has length 66 [2021-05-02 23:02:18,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:02:18,002 INFO L480 AbstractCegarLoop]: Abstraction has 421 states and 636 transitions. [2021-05-02 23:02:18,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 636 transitions. [2021-05-02 23:02:18,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-02 23:02:18,003 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:02:18,003 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:02:18,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-02 23:02:18,003 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:02:18,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:02:18,003 INFO L82 PathProgramCache]: Analyzing trace with hash 391550933, now seen corresponding path program 1 times [2021-05-02 23:02:18,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:02:18,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480373015] [2021-05-02 23:02:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:02:18,279 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-02 23:02:18,281 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:02:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:18,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:02:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:02:18,364 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:02:18,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480373015] [2021-05-02 23:02:18,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1480373015] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:02:18,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:02:18,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 23:02:18,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260616505] [2021-05-02 23:02:18,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 23:02:18,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:02:18,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 23:02:18,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:02:18,367 INFO L87 Difference]: Start difference. First operand 421 states and 636 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:18,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:02:18,893 INFO L93 Difference]: Finished difference Result 943 states and 1415 transitions. [2021-05-02 23:02:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 23:02:18,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 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 78 [2021-05-02 23:02:18,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:02:18,895 INFO L225 Difference]: With dead ends: 943 [2021-05-02 23:02:18,896 INFO L226 Difference]: Without dead ends: 535 [2021-05-02 23:02:18,896 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:02:18,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-05-02 23:02:18,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 421. [2021-05-02 23:02:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 416 states have (on average 1.5144230769230769) internal successors, (630), 416 states have internal predecessors, (630), 3 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) [2021-05-02 23:02:18,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 634 transitions. [2021-05-02 23:02:18,910 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 634 transitions. Word has length 78 [2021-05-02 23:02:18,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:02:18,910 INFO L480 AbstractCegarLoop]: Abstraction has 421 states and 634 transitions. [2021-05-02 23:02:18,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:02:18,911 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 634 transitions. [2021-05-02 23:02:18,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-02 23:02:18,915 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:02:18,915 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:02:18,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-02 23:02:18,915 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:02:18,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:02:18,915 INFO L82 PathProgramCache]: Analyzing trace with hash -332605162, now seen corresponding path program 1 times [2021-05-02 23:02:18,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:02:18,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634513951] [2021-05-02 23:02:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:02:19,471 WARN L205 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 133 [2021-05-02 23:02:19,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,611 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:02:19,719 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-02 23:02:19,719 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:02:19,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,729 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:02:19,826 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:02:19,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,836 INFO L550 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:02:19,912 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:02:19,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,921 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:02:19,981 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:02:19,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,987 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-05-02 23:02:19,987 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:232, output treesize:176 [2021-05-02 23:02:19,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:19,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:20,370 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 107 [2021-05-02 23:02:20,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:20,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:20,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:20,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:20,403 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:02:20,447 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:02:20,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:20,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:20,455 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:02:20,492 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:02:20,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:20,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:20,495 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-05-02 23:02:20,495 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:163, output treesize:135 [2021-05-02 23:02:20,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:20,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,111 WARN L205 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2021-05-02 23:02:21,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,143 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:02:21,242 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:02:21,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,256 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:02:21,351 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:02:21,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,365 INFO L550 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:02:21,433 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:02:21,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,442 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:02:21,500 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:02:21,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,506 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-05-02 23:02:21,507 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:230, output treesize:174 [2021-05-02 23:02:21,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,618 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:02:21,625 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:02:21,767 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-02 23:02:21,818 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:02:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:21,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:02:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:02:21,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:21,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:22,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:22,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:24,074 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 75 [2021-05-02 23:02:24,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:24,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:24,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:26,175 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 74 [2021-05-02 23:02:26,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:26,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:26,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:28,288 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 88 [2021-05-02 23:02:28,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:28,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:28,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:30,415 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 84 [2021-05-02 23:02:30,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:30,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:30,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:32,579 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 86 [2021-05-02 23:02:32,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:32,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:32,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:32,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:32,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:32,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:34,722 WARN L205 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 92 [2021-05-02 23:02:34,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:34,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:34,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:38,957 WARN L205 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:02:38,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:38,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:38,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:43,180 WARN L205 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:02:43,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:43,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:43,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:47,448 WARN L205 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:02:47,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:47,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:47,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:51,703 WARN L205 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:02:51,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:51,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:51,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:55,958 WARN L205 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:02:55,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:55,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:02:55,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:00,217 WARN L205 SmtUtils]: Spent 4.17 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:03:00,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:00,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:00,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:04,521 WARN L205 SmtUtils]: Spent 4.17 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:03:04,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:04,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:04,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:08,800 WARN L205 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2021-05-02 23:03:08,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:08,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:08,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:08,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:13,094 WARN L205 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2021-05-02 23:03:13,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:13,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:13,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:15,249 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 92 [2021-05-02 23:03:15,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:15,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:15,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:17,421 WARN L205 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 95 [2021-05-02 23:03:17,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:17,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:22,036 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-05-02 23:03:22,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:24,548 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-05-02 23:03:24,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:31,136 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 119 [2021-05-02 23:03:31,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:31,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:31,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:39,918 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-02 23:03:39,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:48,681 WARN L205 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2021-05-02 23:03:48,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:03:56,739 WARN L205 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2021-05-02 23:03:56,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:04:01,918 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2021-05-02 23:04:01,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:04:11,019 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2021-05-02 23:04:11,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:04:20,169 WARN L205 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2021-05-02 23:04:20,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:04:20,175 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:04:20,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634513951] [2021-05-02 23:04:20,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1634513951] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:04:20,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:04:20,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-02 23:04:20,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6654234] [2021-05-02 23:04:20,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 23:04:20,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:04:20,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 23:04:20,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=896, Unknown=29, NotChecked=0, Total=1056 [2021-05-02 23:04:20,177 INFO L87 Difference]: Start difference. First operand 421 states and 634 transitions. Second operand has 33 states, 33 states have (on average 2.242424242424242) internal successors, (74), 32 states have internal predecessors, (74), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:06:02,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:06:02,800 INFO L93 Difference]: Finished difference Result 860 states and 1301 transitions. [2021-05-02 23:06:02,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 23:06:02,801 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.242424242424242) internal successors, (74), 32 states have internal predecessors, (74), 1 states have call successors, (3), 2 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 78 [2021-05-02 23:06:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:06:02,803 INFO L225 Difference]: With dead ends: 860 [2021-05-02 23:06:02,803 INFO L226 Difference]: Without dead ends: 603 [2021-05-02 23:06:02,804 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 118139.5ms TimeCoverageRelationStatistics Valid=131, Invalid=896, Unknown=29, NotChecked=0, Total=1056 [2021-05-02 23:06:02,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-05-02 23:06:02,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 529. [2021-05-02 23:06:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 524 states have (on average 1.4923664122137406) internal successors, (782), 524 states have internal predecessors, (782), 3 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) [2021-05-02 23:06:02,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 786 transitions. [2021-05-02 23:06:02,833 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 786 transitions. Word has length 78 [2021-05-02 23:06:02,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:06:02,834 INFO L480 AbstractCegarLoop]: Abstraction has 529 states and 786 transitions. [2021-05-02 23:06:02,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.242424242424242) internal successors, (74), 32 states have internal predecessors, (74), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:06:02,834 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 786 transitions. [2021-05-02 23:06:02,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-02 23:06:02,835 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:06:02,835 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:06:02,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-02 23:06:02,836 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:06:02,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:06:02,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1453816233, now seen corresponding path program 1 times [2021-05-02 23:06:02,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:06:02,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529747547] [2021-05-02 23:06:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:06:03,642 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-02 23:06:03,644 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:06:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:06:03,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:06:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:06:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:06:03,816 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:06:03,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529747547] [2021-05-02 23:06:03,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [529747547] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:06:03,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:06:03,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 23:06:03,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024567332] [2021-05-02 23:06:03,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 23:06:03,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:06:03,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 23:06:03,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:06:03,817 INFO L87 Difference]: Start difference. First operand 529 states and 786 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:06:04,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:06:04,778 INFO L93 Difference]: Finished difference Result 1088 states and 1609 transitions. [2021-05-02 23:06:04,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 23:06:04,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 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 78 [2021-05-02 23:06:04,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:06:04,781 INFO L225 Difference]: With dead ends: 1088 [2021-05-02 23:06:04,781 INFO L226 Difference]: Without dead ends: 572 [2021-05-02 23:06:04,782 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:06:04,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-05-02 23:06:04,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 529. [2021-05-02 23:06:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 524 states have (on average 1.4885496183206106) internal successors, (780), 524 states have internal predecessors, (780), 3 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) [2021-05-02 23:06:04,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 784 transitions. [2021-05-02 23:06:04,810 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 784 transitions. Word has length 78 [2021-05-02 23:06:04,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:06:04,810 INFO L480 AbstractCegarLoop]: Abstraction has 529 states and 784 transitions. [2021-05-02 23:06:04,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:06:04,810 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 784 transitions. [2021-05-02 23:06:04,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-02 23:06:04,811 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:06:04,811 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:06:04,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-02 23:06:04,811 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:06:04,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:06:04,811 INFO L82 PathProgramCache]: Analyzing trace with hash 2116994968, now seen corresponding path program 1 times [2021-05-02 23:06:04,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:06:04,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690962775] [2021-05-02 23:06:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:06:05,578 WARN L205 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 106 [2021-05-02 23:06:05,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:05,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:05,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:05,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:05,616 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:06:05,747 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-05-02 23:06:05,747 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:06:05,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:05,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:05,758 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:06:05,866 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-05-02 23:06:05,866 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:06:05,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:05,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:05,870 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-05-02 23:06:05,870 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:162, output treesize:134 [2021-05-02 23:06:05,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:05,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:05,985 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-05-02 23:06:07,325 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 151 DAG size of output: 133 [2021-05-02 23:06:07,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,370 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:06:07,628 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-05-02 23:06:07,628 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:06:07,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,641 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:06:07,857 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-05-02 23:06:07,857 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:06:07,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:07,872 INFO L550 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:06:08,057 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-05-02 23:06:08,057 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:06:08,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:08,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:08,069 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:06:08,220 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-02 23:06:08,221 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:06:08,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:08,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:08,224 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-05-02 23:06:08,224 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:232, output treesize:176 [2021-05-02 23:06:08,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:08,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:08,383 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-05-02 23:06:09,676 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2021-05-02 23:06:09,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,726 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:06:09,900 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-05-02 23:06:09,901 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:06:09,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:09,910 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:06:10,048 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-02 23:06:10,048 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:06:10,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,057 INFO L550 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:06:10,173 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-05-02 23:06:10,173 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:06:10,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,182 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:06:10,280 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:06:10,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,283 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-05-02 23:06:10,283 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:230, output treesize:174 [2021-05-02 23:06:10,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,391 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-05-02 23:06:10,413 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:06:10,415 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:06:10,631 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-02 23:06:10,729 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:06:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:06:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:06:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:06:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:06:10,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:10,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:13,077 WARN L205 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 75 [2021-05-02 23:06:13,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:13,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:13,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:15,240 WARN L205 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 74 [2021-05-02 23:06:15,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:15,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:15,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:17,401 WARN L205 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 88 [2021-05-02 23:06:17,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:17,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:17,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:19,579 WARN L205 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 84 [2021-05-02 23:06:19,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:19,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:19,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:21,736 WARN L205 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 86 [2021-05-02 23:06:21,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:21,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:21,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:21,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:21,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:21,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:23,938 WARN L205 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 92 [2021-05-02 23:06:23,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:23,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:23,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:28,274 WARN L205 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:06:28,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:28,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:28,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:32,603 WARN L205 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:06:32,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:32,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:32,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:36,944 WARN L205 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:06:36,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:36,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:36,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:41,328 WARN L205 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:06:41,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:41,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:41,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:45,846 WARN L205 SmtUtils]: Spent 4.37 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:06:45,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:45,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:45,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:50,384 WARN L205 SmtUtils]: Spent 4.35 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:06:50,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:50,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:50,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:54,932 WARN L205 SmtUtils]: Spent 4.34 s on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-05-02 23:06:54,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:54,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:54,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:59,459 WARN L205 SmtUtils]: Spent 4.33 s on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2021-05-02 23:06:59,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:59,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:59,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:06:59,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:04,003 WARN L205 SmtUtils]: Spent 4.34 s on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2021-05-02 23:07:04,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:04,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:04,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:06,324 WARN L205 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 92 [2021-05-02 23:07:06,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:06,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:06,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:08,693 WARN L205 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 95 [2021-05-02 23:07:08,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:09,131 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-05-02 23:07:09,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:15,545 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-05-02 23:07:15,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:18,396 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-05-02 23:07:18,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:22,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:22,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:22,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:27,215 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-02 23:07:27,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:34,395 WARN L205 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2021-05-02 23:07:34,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:39,990 WARN L205 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2021-05-02 23:07:39,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:47,599 WARN L205 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2021-05-02 23:07:47,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:07:54,339 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2021-05-02 23:07:54,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:08:03,283 WARN L205 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2021-05-02 23:08:03,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:08:03,294 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:08:03,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690962775] [2021-05-02 23:08:03,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [690962775] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:08:03,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:08:03,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-02 23:08:03,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687529715] [2021-05-02 23:08:03,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 23:08:03,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:08:03,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 23:08:03,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=846, Unknown=19, NotChecked=0, Total=992 [2021-05-02 23:08:03,296 INFO L87 Difference]: Start difference. First operand 529 states and 784 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:09:57,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:09:57,212 INFO L93 Difference]: Finished difference Result 872 states and 1302 transitions. [2021-05-02 23:09:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 23:09:57,213 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 1 states have call successors, (3), 2 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 78 [2021-05-02 23:09:57,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:09:57,216 INFO L225 Difference]: With dead ends: 872 [2021-05-02 23:09:57,216 INFO L226 Difference]: Without dead ends: 615 [2021-05-02 23:09:57,218 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 112342.2ms TimeCoverageRelationStatistics Valid=127, Invalid=846, Unknown=19, NotChecked=0, Total=992 [2021-05-02 23:09:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-05-02 23:09:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 541. [2021-05-02 23:09:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 536 states have (on average 1.4776119402985075) internal successors, (792), 536 states have internal predecessors, (792), 3 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) [2021-05-02 23:09:57,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 796 transitions. [2021-05-02 23:09:57,257 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 796 transitions. Word has length 78 [2021-05-02 23:09:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:09:57,258 INFO L480 AbstractCegarLoop]: Abstraction has 541 states and 796 transitions. [2021-05-02 23:09:57,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:09:57,258 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 796 transitions. [2021-05-02 23:09:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-02 23:09:57,260 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:09:57,260 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:09:57,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-02 23:09:57,260 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:09:57,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:09:57,261 INFO L82 PathProgramCache]: Analyzing trace with hash -291930412, now seen corresponding path program 1 times [2021-05-02 23:09:57,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:09:57,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913412746] [2021-05-02 23:09:57,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:09:59,497 WARN L205 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 150 DAG size of output: 132 [2021-05-02 23:09:59,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,565 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:09:59,971 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-05-02 23:09:59,971 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:09:59,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:09:59,990 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:10:00,316 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-05-02 23:10:00,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:10:00,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:00,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:00,334 INFO L550 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:10:00,612 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-02 23:10:00,613 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:10:00,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:00,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:00,630 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:10:00,866 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-05-02 23:10:00,867 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:10:00,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:00,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:00,873 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-05-02 23:10:00,874 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:231, output treesize:175 [2021-05-02 23:10:00,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:00,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:01,118 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-05-02 23:10:02,276 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 131 DAG size of output: 107 [2021-05-02 23:10:02,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:02,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:02,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:02,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:02,336 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:10:02,559 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-02 23:10:02,560 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:10:02,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:02,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:02,575 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:10:02,748 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-05-02 23:10:02,749 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:10:02,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:02,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:02,756 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-05-02 23:10:02,756 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:163, output treesize:135 [2021-05-02 23:10:02,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:02,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:02,946 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-05-02 23:10:05,147 WARN L205 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2021-05-02 23:10:05,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,216 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:10:05,632 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-05-02 23:10:05,633 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:10:05,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,652 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:10:05,974 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-02 23:10:05,975 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:10:05,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:05,993 INFO L550 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:10:06,266 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-05-02 23:10:06,268 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:10:06,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:06,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:06,287 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:10:06,528 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-05-02 23:10:06,529 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:10:06,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:06,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:06,535 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-05-02 23:10:06,535 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:230, output treesize:174 [2021-05-02 23:10:06,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:06,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:06,767 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-05-02 23:10:06,782 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:10:06,785 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:10:07,105 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-02 23:10:07,320 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-05-02 23:10:07,325 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:10:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:10:07,579 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-02 23:10:07,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:10:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:10:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:10:07,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:07,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:07,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:07,747 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 21 [2021-05-02 23:10:07,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:07,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:07,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:07,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:10,127 WARN L205 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 75 [2021-05-02 23:10:10,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:10,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:10,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:12,413 WARN L205 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 73 [2021-05-02 23:10:12,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:12,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:12,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:14,771 WARN L205 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 87 [2021-05-02 23:10:14,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:14,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:14,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:17,143 WARN L205 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 83 [2021-05-02 23:10:17,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:17,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:17,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:19,539 WARN L205 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 85 [2021-05-02 23:10:19,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:19,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:19,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:19,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:19,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:19,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:22,009 WARN L205 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 91 [2021-05-02 23:10:22,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:22,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:22,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:26,773 WARN L205 SmtUtils]: Spent 4.58 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:10:26,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:26,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:26,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:31,523 WARN L205 SmtUtils]: Spent 4.56 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:10:31,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:31,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:31,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:36,285 WARN L205 SmtUtils]: Spent 4.55 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:10:36,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:36,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:36,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:41,078 WARN L205 SmtUtils]: Spent 4.43 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:10:41,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:41,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:41,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:45,677 WARN L205 SmtUtils]: Spent 4.41 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:10:45,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:45,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:45,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:50,382 WARN L205 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:10:50,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:50,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:50,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:55,274 WARN L205 SmtUtils]: Spent 4.58 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:10:55,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:55,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:10:55,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:00,160 WARN L205 SmtUtils]: Spent 4.59 s on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2021-05-02 23:11:00,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:00,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:00,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:00,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:05,114 WARN L205 SmtUtils]: Spent 4.61 s on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2021-05-02 23:11:05,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:05,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:05,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:07,679 WARN L205 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 91 [2021-05-02 23:11:07,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:07,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:07,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:10,313 WARN L205 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 94 [2021-05-02 23:11:10,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:11,596 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-05-02 23:11:11,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:17,215 WARN L205 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-05-02 23:11:17,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:23,053 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 129 [2021-05-02 23:11:23,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:26,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:26,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:26,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:34,169 WARN L205 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-02 23:11:34,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:40,429 WARN L205 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2021-05-02 23:11:40,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:49,961 WARN L205 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2021-05-02 23:11:49,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:11:58,953 WARN L205 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2021-05-02 23:11:58,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:12:08,433 WARN L205 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2021-05-02 23:12:08,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:12:17,890 WARN L205 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2021-05-02 23:12:17,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:12:17,906 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:12:17,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913412746] [2021-05-02 23:12:17,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [913412746] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:12:17,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:12:17,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-02 23:12:17,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736493869] [2021-05-02 23:12:17,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 23:12:17,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:12:17,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 23:12:17,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=841, Unknown=25, NotChecked=0, Total=992 [2021-05-02 23:12:17,908 INFO L87 Difference]: Start difference. First operand 541 states and 796 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:14:01,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:14:01,543 INFO L93 Difference]: Finished difference Result 1021 states and 1505 transitions. [2021-05-02 23:14:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 23:14:01,545 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 1 states have call successors, (3), 2 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 78 [2021-05-02 23:14:01,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:14:01,548 INFO L225 Difference]: With dead ends: 1021 [2021-05-02 23:14:01,548 INFO L226 Difference]: Without dead ends: 644 [2021-05-02 23:14:01,550 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 130185.0ms TimeCoverageRelationStatistics Valid=126, Invalid=841, Unknown=25, NotChecked=0, Total=992 [2021-05-02 23:14:01,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-05-02 23:14:01,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 558. [2021-05-02 23:14:01,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 553 states have (on average 1.4665461121157324) internal successors, (811), 553 states have internal predecessors, (811), 3 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) [2021-05-02 23:14:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 815 transitions. [2021-05-02 23:14:01,602 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 815 transitions. Word has length 78 [2021-05-02 23:14:01,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:14:01,602 INFO L480 AbstractCegarLoop]: Abstraction has 558 states and 815 transitions. [2021-05-02 23:14:01,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:14:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 815 transitions. [2021-05-02 23:14:01,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-02 23:14:01,604 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:14:01,604 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:14:01,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-02 23:14:01,604 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ssl3_connectErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:14:01,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:14:01,605 INFO L82 PathProgramCache]: Analyzing trace with hash -2137297578, now seen corresponding path program 1 times [2021-05-02 23:14:01,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:14:01,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312665054] [2021-05-02 23:14:01,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:14:03,062 WARN L205 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 130 DAG size of output: 106 [2021-05-02 23:14:03,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:03,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:03,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:03,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:03,127 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:14:03,384 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-05-02 23:14:03,385 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:14:03,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:03,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:03,402 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:14:03,613 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-05-02 23:14:03,614 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:14:03,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:03,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:03,621 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-05-02 23:14:03,622 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:162, output treesize:134 [2021-05-02 23:14:03,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:03,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:03,845 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-05-02 23:14:06,667 WARN L205 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 150 DAG size of output: 132 [2021-05-02 23:14:06,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:06,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:06,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:06,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:06,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:06,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:06,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:06,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:06,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:06,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:06,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:06,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:06,753 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:14:07,325 WARN L205 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-05-02 23:14:07,326 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:14:07,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:07,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:07,350 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:14:07,807 WARN L205 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-05-02 23:14:07,808 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:14:07,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:07,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:07,830 INFO L550 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:14:08,225 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-02 23:14:08,226 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:14:08,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:08,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:08,248 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:14:08,572 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-05-02 23:14:08,573 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:14:08,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:08,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:08,581 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-05-02 23:14:08,581 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:231, output treesize:175 [2021-05-02 23:14:08,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:08,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:08,906 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-05-02 23:14:11,560 WARN L205 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2021-05-02 23:14:11,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:11,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:11,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:11,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:11,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:11,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:11,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:11,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:11,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:11,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:11,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:11,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:11,645 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:14:12,149 WARN L205 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-05-02 23:14:12,150 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:14:12,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:12,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:12,175 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:14:12,616 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-05-02 23:14:12,617 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:14:12,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:12,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:12,643 INFO L550 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:14:12,991 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-05-02 23:14:12,992 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:14:13,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:13,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:13,015 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 23:14:13,315 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-05-02 23:14:13,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:14:13,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:13,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:13,325 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-05-02 23:14:13,325 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:230, output treesize:174 [2021-05-02 23:14:13,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:13,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:13,630 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-05-02 23:14:13,649 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:14:13,652 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:14:14,012 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-02 23:14:14,279 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-05-02 23:14:14,285 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:14:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:14:14,551 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-02 23:14:14,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:14:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:14:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:14:14,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:14,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:14,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:14,729 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 21 [2021-05-02 23:14:14,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:14,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:14,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:14,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:17,158 WARN L205 SmtUtils]: Spent 2.26 s on a formula simplification that was a NOOP. DAG size: 75 [2021-05-02 23:14:17,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:17,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:17,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:19,491 WARN L205 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 73 [2021-05-02 23:14:19,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:19,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:19,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:21,997 WARN L205 SmtUtils]: Spent 2.37 s on a formula simplification that was a NOOP. DAG size: 87 [2021-05-02 23:14:22,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:22,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:22,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:24,569 WARN L205 SmtUtils]: Spent 2.39 s on a formula simplification that was a NOOP. DAG size: 83 [2021-05-02 23:14:24,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:24,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:24,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:27,090 WARN L205 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 85 [2021-05-02 23:14:27,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:27,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:27,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:27,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:27,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:27,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:29,618 WARN L205 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 91 [2021-05-02 23:14:29,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:29,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:29,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:34,563 WARN L205 SmtUtils]: Spent 4.73 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:14:34,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:34,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:34,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:39,445 WARN L205 SmtUtils]: Spent 4.64 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:14:39,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:39,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:39,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:44,459 WARN L205 SmtUtils]: Spent 4.68 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:14:44,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:44,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:44,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:49,431 WARN L205 SmtUtils]: Spent 4.67 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:14:49,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:49,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:49,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:54,528 WARN L205 SmtUtils]: Spent 4.76 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:14:54,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:54,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:54,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:59,522 WARN L205 SmtUtils]: Spent 4.65 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:14:59,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:59,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:14:59,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:04,546 WARN L205 SmtUtils]: Spent 4.66 s on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-05-02 23:15:04,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:04,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:04,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:09,524 WARN L205 SmtUtils]: Spent 4.65 s on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2021-05-02 23:15:09,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:09,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:09,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:09,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:14,548 WARN L205 SmtUtils]: Spent 4.64 s on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2021-05-02 23:15:14,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:14,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:14,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:17,127 WARN L205 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 91 [2021-05-02 23:15:17,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:17,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:17,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:19,753 WARN L205 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 94 [2021-05-02 23:15:19,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:20,517 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-05-02 23:15:20,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:26,743 WARN L205 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-05-02 23:15:26,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:30,550 WARN L205 SmtUtils]: Spent 1000.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-05-02 23:15:30,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:39,135 WARN L205 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 124 DAG size of output: 117 [2021-05-02 23:15:39,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:39,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:39,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:47,811 WARN L205 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-05-02 23:15:47,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:15:56,140 WARN L205 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2021-05-02 23:15:56,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:16:03,206 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2021-05-02 23:16:03,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:16:12,644 WARN L205 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2021-05-02 23:16:12,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:16:22,298 WARN L205 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2021-05-02 23:16:22,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:16:29,982 WARN L205 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2021-05-02 23:16:29,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:16:29,990 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:16:29,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312665054] [2021-05-02 23:16:29,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1312665054] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:16:29,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:16:29,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-02 23:16:29,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488564809] [2021-05-02 23:16:29,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 23:16:29,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:16:29,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 23:16:29,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=898, Unknown=27, NotChecked=0, Total=1056 [2021-05-02 23:16:29,991 INFO L87 Difference]: Start difference. First operand 558 states and 815 transitions. Second operand has 33 states, 33 states have (on average 2.242424242424242) internal successors, (74), 32 states have internal predecessors, (74), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)