/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-2a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:25:15,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:25:15,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:25:15,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:25:16,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:25:16,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:25:16,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:25:16,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:25:16,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:25:16,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:25:16,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:25:16,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:25:16,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:25:16,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:25:16,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:25:16,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:25:16,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:25:16,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:25:16,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:25:16,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:25:16,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:25:16,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:25:16,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:25:16,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:25:16,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:25:16,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:25:16,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:25:16,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:25:16,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:25:16,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:25:16,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:25:16,069 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:25:16,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:25:16,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:25:16,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:25:16,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:25:16,070 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:25:16,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:25:16,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:25:16,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:25:16,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:25:16,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:25:16,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:25:16,072 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:25:16,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:25:16,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:25:16,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:25:16,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:25:16,454 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:25:16,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-07 00:25:16,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18331f727/4c99fe6bbfe745b8b9ca5d5550d49525/FLAG82c2cc65d [2020-11-07 00:25:17,248 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:25:17,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-07 00:25:17,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18331f727/4c99fe6bbfe745b8b9ca5d5550d49525/FLAG82c2cc65d [2020-11-07 00:25:17,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18331f727/4c99fe6bbfe745b8b9ca5d5550d49525 [2020-11-07 00:25:17,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:25:17,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:25:17,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:25:17,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:25:17,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:25:17,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:17" (1/1) ... [2020-11-07 00:25:17,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b9b91bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:17, skipping insertion in model container [2020-11-07 00:25:17,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:17" (1/1) ... [2020-11-07 00:25:17,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:25:17,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:25:17,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:25:17,938 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:25:18,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:25:18,030 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:25:18,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18 WrapperNode [2020-11-07 00:25:18,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:25:18,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:25:18,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:25:18,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:25:18,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:25:18,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:25:18,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:25:18,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:25:18,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (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 [2020-11-07 00:25:18,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:25:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:25:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:25:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-11-07 00:25:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:25:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:25:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:25:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:25:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:25:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:25:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-07 00:25:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-11-07 00:25:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:25:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:25:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:25:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:25:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:25:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:25:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:25:18,417 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-07 00:25:18,993 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-07 00:25:18,993 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-07 00:25:19,013 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:25:19,014 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 00:25:19,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:19 BoogieIcfgContainer [2020-11-07 00:25:19,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:25:19,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:25:19,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:25:19,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:25:19,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:25:17" (1/3) ... [2020-11-07 00:25:19,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7684a877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:19, skipping insertion in model container [2020-11-07 00:25:19,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (2/3) ... [2020-11-07 00:25:19,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7684a877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:19, skipping insertion in model container [2020-11-07 00:25:19,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:19" (3/3) ... [2020-11-07 00:25:19,025 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2020-11-07 00:25:19,040 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:25:19,044 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:25:19,057 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:25:19,080 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:25:19,081 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:25:19,081 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:25:19,081 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:25:19,081 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:25:19,081 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:25:19,081 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:25:19,081 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:25:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-07 00:25:19,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-07 00:25:19,125 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:19,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:19,129 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:19,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:19,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1178185491, now seen corresponding path program 1 times [2020-11-07 00:25:19,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:19,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785651354] [2020-11-07 00:25:19,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:19,223 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:19,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:19,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785651354] [2020-11-07 00:25:19,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:19,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:25:19,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627015535] [2020-11-07 00:25:19,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:25:19,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:19,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:25:19,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:25:19,610 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 4 states. [2020-11-07 00:25:20,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:20,656 INFO L93 Difference]: Finished difference Result 590 states and 767 transitions. [2020-11-07 00:25:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:25:20,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-11-07 00:25:20,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:20,672 INFO L225 Difference]: With dead ends: 590 [2020-11-07 00:25:20,673 INFO L226 Difference]: Without dead ends: 326 [2020-11-07 00:25:20,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:25:20,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-11-07 00:25:20,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2020-11-07 00:25:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-11-07 00:25:20,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 384 transitions. [2020-11-07 00:25:20,780 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 384 transitions. Word has length 151 [2020-11-07 00:25:20,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:20,781 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 384 transitions. [2020-11-07 00:25:20,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:25:20,782 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 384 transitions. [2020-11-07 00:25:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-11-07 00:25:20,785 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:20,785 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:20,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:25:20,786 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:20,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:20,786 INFO L82 PathProgramCache]: Analyzing trace with hash -841787580, now seen corresponding path program 1 times [2020-11-07 00:25:20,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:20,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856518059] [2020-11-07 00:25:20,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:22,679 WARN L194 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 110 DAG size of output: 104 [2020-11-07 00:25:22,698 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:25:22,707 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:22,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:22,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856518059] [2020-11-07 00:25:22,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:22,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:25:22,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492445597] [2020-11-07 00:25:22,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:25:22,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:22,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:25:22,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:25:22,924 INFO L87 Difference]: Start difference. First operand 326 states and 384 transitions. Second operand 4 states. [2020-11-07 00:25:23,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:23,831 INFO L93 Difference]: Finished difference Result 544 states and 667 transitions. [2020-11-07 00:25:23,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:25:23,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-11-07 00:25:23,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:23,837 INFO L225 Difference]: With dead ends: 544 [2020-11-07 00:25:23,837 INFO L226 Difference]: Without dead ends: 354 [2020-11-07 00:25:23,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:25:23,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-11-07 00:25:23,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 344. [2020-11-07 00:25:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-11-07 00:25:23,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 407 transitions. [2020-11-07 00:25:23,924 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 407 transitions. Word has length 169 [2020-11-07 00:25:23,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:23,924 INFO L481 AbstractCegarLoop]: Abstraction has 344 states and 407 transitions. [2020-11-07 00:25:23,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:25:23,925 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 407 transitions. [2020-11-07 00:25:23,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-07 00:25:23,928 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:23,928 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:23,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:25:23,928 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:23,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:23,929 INFO L82 PathProgramCache]: Analyzing trace with hash 327300708, now seen corresponding path program 1 times [2020-11-07 00:25:23,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:23,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733316910] [2020-11-07 00:25:23,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:24,072 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-11-07 00:25:26,289 WARN L194 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 115 DAG size of output: 109 [2020-11-07 00:25:26,294 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:25:26,296 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:26,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733316910] [2020-11-07 00:25:26,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:26,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 00:25:26,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463333846] [2020-11-07 00:25:26,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 00:25:26,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:26,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 00:25:26,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:25:26,478 INFO L87 Difference]: Start difference. First operand 344 states and 407 transitions. Second operand 5 states. [2020-11-07 00:25:28,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:28,369 INFO L93 Difference]: Finished difference Result 894 states and 1152 transitions. [2020-11-07 00:25:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:25:28,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-11-07 00:25:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:28,376 INFO L225 Difference]: With dead ends: 894 [2020-11-07 00:25:28,376 INFO L226 Difference]: Without dead ends: 686 [2020-11-07 00:25:28,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:25:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-11-07 00:25:28,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 391. [2020-11-07 00:25:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-11-07 00:25:28,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 462 transitions. [2020-11-07 00:25:28,445 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 462 transitions. Word has length 176 [2020-11-07 00:25:28,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:28,446 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 462 transitions. [2020-11-07 00:25:28,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 00:25:28,446 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 462 transitions. [2020-11-07 00:25:28,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-11-07 00:25:28,451 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:28,452 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:28,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:25:28,452 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:28,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:28,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1453915873, now seen corresponding path program 1 times [2020-11-07 00:25:28,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:28,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107457962] [2020-11-07 00:25:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:29,403 WARN L194 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-11-07 00:25:30,319 WARN L194 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-11-07 00:25:32,173 WARN L194 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 110 DAG size of output: 104 [2020-11-07 00:25:32,178 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:25:32,180 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:32,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:32,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107457962] [2020-11-07 00:25:32,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:32,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:25:32,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12331386] [2020-11-07 00:25:32,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:25:32,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:32,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:25:32,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:25:32,354 INFO L87 Difference]: Start difference. First operand 391 states and 462 transitions. Second operand 4 states. [2020-11-07 00:25:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:33,262 INFO L93 Difference]: Finished difference Result 886 states and 1089 transitions. [2020-11-07 00:25:33,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:25:33,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2020-11-07 00:25:33,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:33,269 INFO L225 Difference]: With dead ends: 886 [2020-11-07 00:25:33,269 INFO L226 Difference]: Without dead ends: 631 [2020-11-07 00:25:33,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:25:33,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-11-07 00:25:33,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 630. [2020-11-07 00:25:33,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-11-07 00:25:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 761 transitions. [2020-11-07 00:25:33,365 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 761 transitions. Word has length 189 [2020-11-07 00:25:33,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:33,366 INFO L481 AbstractCegarLoop]: Abstraction has 630 states and 761 transitions. [2020-11-07 00:25:33,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:25:33,366 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 761 transitions. [2020-11-07 00:25:33,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-11-07 00:25:33,369 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:33,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:33,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:25:33,370 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:33,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:33,373 INFO L82 PathProgramCache]: Analyzing trace with hash -605658390, now seen corresponding path program 1 times [2020-11-07 00:25:33,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:33,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377511236] [2020-11-07 00:25:33,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:34,319 WARN L194 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-07 00:25:36,287 WARN L194 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2020-11-07 00:25:37,325 WARN L194 SmtUtils]: Spent 857.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-07 00:25:37,327 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:25:37,329 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:37,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:37,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377511236] [2020-11-07 00:25:37,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:37,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:25:37,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783624330] [2020-11-07 00:25:37,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:25:37,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:37,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:25:37,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:25:37,504 INFO L87 Difference]: Start difference. First operand 630 states and 761 transitions. Second operand 4 states. [2020-11-07 00:25:38,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:38,313 INFO L93 Difference]: Finished difference Result 923 states and 1135 transitions. [2020-11-07 00:25:38,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:25:38,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 190 [2020-11-07 00:25:38,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:38,318 INFO L225 Difference]: With dead ends: 923 [2020-11-07 00:25:38,318 INFO L226 Difference]: Without dead ends: 668 [2020-11-07 00:25:38,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:25:38,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2020-11-07 00:25:38,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 650. [2020-11-07 00:25:38,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-11-07 00:25:38,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 786 transitions. [2020-11-07 00:25:38,413 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 786 transitions. Word has length 190 [2020-11-07 00:25:38,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:38,414 INFO L481 AbstractCegarLoop]: Abstraction has 650 states and 786 transitions. [2020-11-07 00:25:38,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:25:38,414 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 786 transitions. [2020-11-07 00:25:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-11-07 00:25:38,416 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:38,417 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:38,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:25:38,417 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:38,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1560288258, now seen corresponding path program 1 times [2020-11-07 00:25:38,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:38,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515188534] [2020-11-07 00:25:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:39,379 WARN L194 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-07 00:25:39,528 WARN L194 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-11-07 00:25:40,670 WARN L194 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 127 [2020-11-07 00:25:42,522 WARN L194 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 110 DAG size of output: 104 [2020-11-07 00:25:42,525 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:25:42,527 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:42,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:42,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515188534] [2020-11-07 00:25:42,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:42,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:25:42,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770022894] [2020-11-07 00:25:42,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:25:42,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:42,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:25:42,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:25:42,651 INFO L87 Difference]: Start difference. First operand 650 states and 786 transitions. Second operand 4 states. [2020-11-07 00:25:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:43,552 INFO L93 Difference]: Finished difference Result 1608 states and 1979 transitions. [2020-11-07 00:25:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:25:43,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2020-11-07 00:25:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:43,559 INFO L225 Difference]: With dead ends: 1608 [2020-11-07 00:25:43,559 INFO L226 Difference]: Without dead ends: 1094 [2020-11-07 00:25:43,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:25:43,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2020-11-07 00:25:43,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1089. [2020-11-07 00:25:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1089 states. [2020-11-07 00:25:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1322 transitions. [2020-11-07 00:25:43,704 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1322 transitions. Word has length 197 [2020-11-07 00:25:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:43,704 INFO L481 AbstractCegarLoop]: Abstraction has 1089 states and 1322 transitions. [2020-11-07 00:25:43,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:25:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1322 transitions. [2020-11-07 00:25:43,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-11-07 00:25:43,707 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:43,708 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:43,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 00:25:43,708 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:43,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:43,709 INFO L82 PathProgramCache]: Analyzing trace with hash -2007213211, now seen corresponding path program 1 times [2020-11-07 00:25:43,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:43,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066394374] [2020-11-07 00:25:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:44,733 WARN L194 SmtUtils]: Spent 891.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-11-07 00:25:46,858 WARN L194 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 112 DAG size of output: 103 [2020-11-07 00:25:47,054 WARN L194 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-11-07 00:25:48,201 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 127 [2020-11-07 00:25:48,202 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:25:48,204 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:48,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:48,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066394374] [2020-11-07 00:25:48,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:48,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:25:48,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338943023] [2020-11-07 00:25:48,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:25:48,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:48,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:25:48,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:25:48,323 INFO L87 Difference]: Start difference. First operand 1089 states and 1322 transitions. Second operand 4 states. [2020-11-07 00:25:48,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:48,748 INFO L93 Difference]: Finished difference Result 2060 states and 2525 transitions. [2020-11-07 00:25:48,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:25:48,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-11-07 00:25:48,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:48,757 INFO L225 Difference]: With dead ends: 2060 [2020-11-07 00:25:48,757 INFO L226 Difference]: Without dead ends: 1107 [2020-11-07 00:25:48,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:25:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2020-11-07 00:25:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1097. [2020-11-07 00:25:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2020-11-07 00:25:48,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1327 transitions. [2020-11-07 00:25:48,905 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1327 transitions. Word has length 198 [2020-11-07 00:25:48,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:48,906 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1327 transitions. [2020-11-07 00:25:48,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:25:48,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1327 transitions. [2020-11-07 00:25:48,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-07 00:25:48,909 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:48,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:48,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 00:25:48,910 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:48,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:48,910 INFO L82 PathProgramCache]: Analyzing trace with hash -585015371, now seen corresponding path program 1 times [2020-11-07 00:25:48,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:48,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970411803] [2020-11-07 00:25:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:49,019 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-11-07 00:25:50,122 WARN L194 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 125 [2020-11-07 00:25:50,283 WARN L194 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-11-07 00:25:51,453 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 128 [2020-11-07 00:25:51,455 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:25:51,456 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:51,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:51,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970411803] [2020-11-07 00:25:51,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:51,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:25:51,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87197873] [2020-11-07 00:25:51,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:25:51,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:51,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:25:51,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:25:51,556 INFO L87 Difference]: Start difference. First operand 1097 states and 1327 transitions. Second operand 4 states. [2020-11-07 00:25:52,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:52,555 INFO L93 Difference]: Finished difference Result 2614 states and 3192 transitions. [2020-11-07 00:25:52,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:25:52,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2020-11-07 00:25:52,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:52,564 INFO L225 Difference]: With dead ends: 2614 [2020-11-07 00:25:52,564 INFO L226 Difference]: Without dead ends: 1653 [2020-11-07 00:25:52,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:25:52,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2020-11-07 00:25:52,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1652. [2020-11-07 00:25:52,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2020-11-07 00:25:52,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1994 transitions. [2020-11-07 00:25:52,798 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1994 transitions. Word has length 200 [2020-11-07 00:25:52,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:52,799 INFO L481 AbstractCegarLoop]: Abstraction has 1652 states and 1994 transitions. [2020-11-07 00:25:52,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:25:52,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1994 transitions. [2020-11-07 00:25:52,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-07 00:25:52,806 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:52,806 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:52,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 00:25:52,807 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:52,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:52,807 INFO L82 PathProgramCache]: Analyzing trace with hash -639408269, now seen corresponding path program 1 times [2020-11-07 00:25:52,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:52,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22086326] [2020-11-07 00:25:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:52,914 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-11-07 00:25:53,988 WARN L194 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 125 [2020-11-07 00:25:54,135 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-11-07 00:25:55,314 WARN L194 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 128 [2020-11-07 00:25:57,468 WARN L194 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2020-11-07 00:25:57,471 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:25:57,472 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:57,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:57,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22086326] [2020-11-07 00:25:57,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:57,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:25:57,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639184866] [2020-11-07 00:25:57,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:25:57,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:57,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:25:57,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:25:57,607 INFO L87 Difference]: Start difference. First operand 1652 states and 1994 transitions. Second operand 4 states. [2020-11-07 00:25:58,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:58,510 INFO L93 Difference]: Finished difference Result 2628 states and 3188 transitions. [2020-11-07 00:25:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:25:58,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2020-11-07 00:25:58,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:58,519 INFO L225 Difference]: With dead ends: 2628 [2020-11-07 00:25:58,520 INFO L226 Difference]: Without dead ends: 1667 [2020-11-07 00:25:58,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:25:58,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-11-07 00:25:58,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1666. [2020-11-07 00:25:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1666 states. [2020-11-07 00:25:58,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2004 transitions. [2020-11-07 00:25:58,758 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2004 transitions. Word has length 200 [2020-11-07 00:25:58,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:58,759 INFO L481 AbstractCegarLoop]: Abstraction has 1666 states and 2004 transitions. [2020-11-07 00:25:58,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:25:58,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2004 transitions. [2020-11-07 00:25:58,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-11-07 00:25:58,764 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:58,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:58,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 00:25:58,765 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:58,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:58,766 INFO L82 PathProgramCache]: Analyzing trace with hash -682836114, now seen corresponding path program 1 times [2020-11-07 00:25:58,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:58,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111002283] [2020-11-07 00:25:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:58,892 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2020-11-07 00:26:00,053 WARN L194 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 128 [2020-11-07 00:26:00,196 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-11-07 00:26:01,363 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 128 [2020-11-07 00:26:01,372 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:26:01,375 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:26:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:26:01,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:26:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:26:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:26:01,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111002283] [2020-11-07 00:26:01,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:26:01,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 00:26:01,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746019802] [2020-11-07 00:26:01,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 00:26:01,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:26:01,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 00:26:01,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:26:01,528 INFO L87 Difference]: Start difference. First operand 1666 states and 2004 transitions. Second operand 5 states. [2020-11-07 00:26:03,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:26:03,421 INFO L93 Difference]: Finished difference Result 3400 states and 4121 transitions. [2020-11-07 00:26:03,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:26:03,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-11-07 00:26:03,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:26:03,443 INFO L225 Difference]: With dead ends: 3400 [2020-11-07 00:26:03,443 INFO L226 Difference]: Without dead ends: 2887 [2020-11-07 00:26:03,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:26:03,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-11-07 00:26:03,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1680. [2020-11-07 00:26:03,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1680 states. [2020-11-07 00:26:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2023 transitions. [2020-11-07 00:26:03,700 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2023 transitions. Word has length 201 [2020-11-07 00:26:03,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:26:03,701 INFO L481 AbstractCegarLoop]: Abstraction has 1680 states and 2023 transitions. [2020-11-07 00:26:03,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 00:26:03,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2023 transitions. [2020-11-07 00:26:03,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-11-07 00:26:03,706 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:26:03,706 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:26:03,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 00:26:03,707 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:26:03,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:26:03,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1837573722, now seen corresponding path program 1 times [2020-11-07 00:26:03,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:26:03,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566111686] [2020-11-07 00:26:03,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:26:04,743 WARN L194 SmtUtils]: Spent 899.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-07 00:26:06,841 WARN L194 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2020-11-07 00:26:07,971 WARN L194 SmtUtils]: Spent 871.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-07 00:26:07,972 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:26:07,974 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:26:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:26:08,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:26:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:26:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:26:08,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566111686] [2020-11-07 00:26:08,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:26:08,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:26:08,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362264143] [2020-11-07 00:26:08,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:26:08,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:26:08,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:26:08,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:26:08,115 INFO L87 Difference]: Start difference. First operand 1680 states and 2023 transitions. Second operand 4 states. [2020-11-07 00:26:09,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:26:09,201 INFO L93 Difference]: Finished difference Result 4622 states and 5626 transitions. [2020-11-07 00:26:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:26:09,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2020-11-07 00:26:09,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:26:09,215 INFO L225 Difference]: With dead ends: 4622 [2020-11-07 00:26:09,215 INFO L226 Difference]: Without dead ends: 3147 [2020-11-07 00:26:09,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:26:09,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2020-11-07 00:26:09,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 3142. [2020-11-07 00:26:09,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3142 states. [2020-11-07 00:26:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 3797 transitions. [2020-11-07 00:26:09,759 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 3797 transitions. Word has length 212 [2020-11-07 00:26:09,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:26:09,760 INFO L481 AbstractCegarLoop]: Abstraction has 3142 states and 3797 transitions. [2020-11-07 00:26:09,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:26:09,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 3797 transitions. [2020-11-07 00:26:09,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-11-07 00:26:09,764 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:26:09,765 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:26:09,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 00:26:09,765 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:26:09,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:26:09,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1140327750, now seen corresponding path program 1 times [2020-11-07 00:26:09,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:26:09,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678707000] [2020-11-07 00:26:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:26:10,758 WARN L194 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-07 00:26:10,861 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-11-07 00:26:12,977 WARN L194 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2020-11-07 00:26:13,227 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2020-11-07 00:26:14,121 WARN L194 SmtUtils]: Spent 849.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-07 00:26:14,122 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:26:14,124 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:26:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:26:14,160 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:26:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:26:14,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:26:14,328 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:26:14,328 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:26:14,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 00:26:14,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:26:14 BoogieIcfgContainer [2020-11-07 00:26:14,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:26:14,376 INFO L168 Benchmark]: Toolchain (without parser) took 56829.31 ms. Allocated memory was 158.3 MB in the beginning and 562.0 MB in the end (delta: 403.7 MB). Free memory was 133.7 MB in the beginning and 389.6 MB in the end (delta: -255.9 MB). Peak memory consumption was 148.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:26:14,379 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory is still 134.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:26:14,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.51 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 118.8 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:26:14,383 INFO L168 Benchmark]: Boogie Preprocessor took 60.96 ms. Allocated memory is still 158.3 MB. Free memory was 118.8 MB in the beginning and 116.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:26:14,386 INFO L168 Benchmark]: RCFGBuilder took 922.00 ms. Allocated memory is still 158.3 MB. Free memory was 116.4 MB in the beginning and 101.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:26:14,389 INFO L168 Benchmark]: TraceAbstraction took 55355.92 ms. Allocated memory was 158.3 MB in the beginning and 562.0 MB in the end (delta: 403.7 MB). Free memory was 100.7 MB in the beginning and 389.6 MB in the end (delta: -288.9 MB). Peak memory consumption was 115.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:26:14,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory is still 134.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 477.51 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 118.8 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.96 ms. Allocated memory is still 158.3 MB. Free memory was 118.8 MB in the beginning and 116.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 922.00 ms. Allocated memory is still 158.3 MB. Free memory was 116.4 MB in the beginning and 101.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 55355.92 ms. Allocated memory was 158.3 MB in the beginning and 562.0 MB in the end (delta: 403.7 MB). Free memory was 100.7 MB in the beginning and 389.6 MB in the end (delta: -288.9 MB). Peak memory consumption was 115.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 303. Possible FailurePath: [L625] int __retres1 ; [L629] CALL ssl3_connect() [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int ag_Z ; [L66] int __retres60 ; [L69] s__state = 12292 [L70] blastFlag = 0 [L71] tmp = __VERIFIER_nondet_int() [L72] cb = 0 [L73] ret = -1 [L74] skip = 0 [L75] tmp___0 = 0 [L76] COND TRUE s__info_callback != 0 [L77] cb = s__info_callback [L85] s__in_handshake = s__in_handshake + 1 [L86] COND FALSE !(tmp___1 + 12288) [L95] COND TRUE \read(s__hit) [L96] ag_Y = 208 [L101] COND TRUE 1 [L103] state = s__state [L104] COND TRUE s__state == 12292 [L207] s__new_session = 1 [L208] s__state = 4096 [L209] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L214] s__server = 0 [L215] COND TRUE cb != 0 [L220] COND FALSE !(s__version + 65280 != 768) [L226] s__type = 4096 [L227] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L245] COND FALSE !(! tmp___4) [L251] COND FALSE !(! tmp___5) [L257] s__state = 4368 [L258] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L259] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND TRUE s__state == 4368 [L263] s__shutdown = 0 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 0 [L266] blastFlag = 1 [L270] COND FALSE !(ret <= 0) [L275] s__state = 4384 [L276] ag_X = s__state - 32 [L277] s__init_num = 0 [L278] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND TRUE s__state == 4384 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L301] s__state = ag_X [L302] COND TRUE \read(s__hit) [L303] s__state = s__state | ag_Y [L307] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND FALSE !(s__state == 4416) [L140] COND FALSE !(s__state == 4417) [L143] COND TRUE s__state == 4432 [L353] ret = __VERIFIER_nondet_int() [L354] COND TRUE blastFlag <= 5 [L616] CALL reach_error() [L3] __assert_fail("0", "s3_clnt_3.BV.c.cil-2a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 362 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 55.2s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5124 SDtfs, 7084 SDslu, 225 SDs, 0 SdLazy, 5096 SolverSat, 167 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3142occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 1553 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...