/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:21:30,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:21:30,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:21:30,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:21:30,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:21:30,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:21:30,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:21:30,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:21:30,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:21:30,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:21:30,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:21:30,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:21:30,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:21:30,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:21:30,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:21:30,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:21:30,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:21:30,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:21:30,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:21:30,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:21:30,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:21:30,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:21:30,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:21:30,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:21:30,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:21:30,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:21:30,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:21:30,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:21:30,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:21:30,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:21:30,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:21:30,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:21:30,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:21:30,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:21:30,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:21:30,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:21:30,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:21:30,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:21:30,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:21:30,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:21:30,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:21:30,752 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:21:30,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:21:30,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:21:30,753 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:21:30,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:21:30,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:21:30,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:21:30,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:21:30,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:21:30,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:21:30,759 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:21:31,044 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:21:31,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:21:31,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:21:31,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:21:31,067 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:21:31,068 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-07-07 13:21:31,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002f62cd3/7c505477aee54eebb0653e9c99b3c9bb/FLAG8007f0ba3 [2020-07-07 13:21:31,684 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:21:31,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-07-07 13:21:31,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002f62cd3/7c505477aee54eebb0653e9c99b3c9bb/FLAG8007f0ba3 [2020-07-07 13:21:31,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002f62cd3/7c505477aee54eebb0653e9c99b3c9bb [2020-07-07 13:21:31,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:21:31,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:21:31,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:21:31,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:21:31,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:21:31,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:21:31" (1/1) ... [2020-07-07 13:21:31,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6113eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:31, skipping insertion in model container [2020-07-07 13:21:31,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:21:31" (1/1) ... [2020-07-07 13:21:31,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:21:32,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:21:32,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:21:32,295 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:21:32,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:21:32,523 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:21:32,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:32 WrapperNode [2020-07-07 13:21:32,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:21:32,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:21:32,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:21:32,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:21:32,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:32" (1/1) ... [2020-07-07 13:21:32,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:32" (1/1) ... [2020-07-07 13:21:32,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:32" (1/1) ... [2020-07-07 13:21:32,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:32" (1/1) ... [2020-07-07 13:21:32,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:32" (1/1) ... [2020-07-07 13:21:32,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:32" (1/1) ... [2020-07-07 13:21:32,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:32" (1/1) ... [2020-07-07 13:21:32,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:21:32,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:21:32,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:21:32,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:21:32,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:32" (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 [2020-07-07 13:21:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:21:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:21:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-07-07 13:21:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:21:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:21:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-07 13:21:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:21:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-07 13:21:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-07-07 13:21:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:21:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:21:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:21:32,880 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-07 13:21:33,640 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-07-07 13:21:33,641 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-07-07 13:21:33,657 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:21:33,658 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:21:33,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:21:33 BoogieIcfgContainer [2020-07-07 13:21:33,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:21:33,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:21:33,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:21:33,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:21:33,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:21:31" (1/3) ... [2020-07-07 13:21:33,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6b07a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:21:33, skipping insertion in model container [2020-07-07 13:21:33,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:32" (2/3) ... [2020-07-07 13:21:33,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6b07a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:21:33, skipping insertion in model container [2020-07-07 13:21:33,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:21:33" (3/3) ... [2020-07-07 13:21:33,685 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2020-07-07 13:21:33,697 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:21:33,707 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:21:33,723 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:21:33,744 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:21:33,744 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:21:33,744 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:21:33,745 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:21:33,745 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:21:33,745 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:21:33,745 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:21:33,745 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:21:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states. [2020-07-07 13:21:33,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-07-07 13:21:33,793 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:33,794 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:33,795 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:33,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:33,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1268045474, now seen corresponding path program 1 times [2020-07-07 13:21:33,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:33,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458954240] [2020-07-07 13:21:33,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:34,370 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:34,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458954240] [2020-07-07 13:21:34,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:34,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:21:34,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606272699] [2020-07-07 13:21:34,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:21:34,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:34,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:21:34,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:21:34,402 INFO L87 Difference]: Start difference. First operand 426 states. Second operand 6 states. [2020-07-07 13:21:34,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:34,955 INFO L93 Difference]: Finished difference Result 802 states and 1073 transitions. [2020-07-07 13:21:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:21:34,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-07-07 13:21:34,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:34,981 INFO L225 Difference]: With dead ends: 802 [2020-07-07 13:21:34,981 INFO L226 Difference]: Without dead ends: 459 [2020-07-07 13:21:34,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:21:35,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-07-07 13:21:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 444. [2020-07-07 13:21:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-07-07 13:21:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 535 transitions. [2020-07-07 13:21:35,144 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 535 transitions. Word has length 158 [2020-07-07 13:21:35,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:35,148 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 535 transitions. [2020-07-07 13:21:35,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:21:35,148 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 535 transitions. [2020-07-07 13:21:35,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-07 13:21:35,159 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:35,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:35,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:21:35,160 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:35,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:35,161 INFO L82 PathProgramCache]: Analyzing trace with hash 796395907, now seen corresponding path program 1 times [2020-07-07 13:21:35,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:35,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449791366] [2020-07-07 13:21:35,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:35,401 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:35,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449791366] [2020-07-07 13:21:35,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:35,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:21:35,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555288414] [2020-07-07 13:21:35,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:21:35,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:35,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:21:35,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:21:35,404 INFO L87 Difference]: Start difference. First operand 444 states and 535 transitions. Second operand 6 states. [2020-07-07 13:21:35,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:35,811 INFO L93 Difference]: Finished difference Result 839 states and 1069 transitions. [2020-07-07 13:21:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:21:35,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-07-07 13:21:35,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:35,816 INFO L225 Difference]: With dead ends: 839 [2020-07-07 13:21:35,816 INFO L226 Difference]: Without dead ends: 525 [2020-07-07 13:21:35,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:21:35,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-07-07 13:21:35,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 507. [2020-07-07 13:21:35,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-07-07 13:21:35,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 634 transitions. [2020-07-07 13:21:35,892 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 634 transitions. Word has length 166 [2020-07-07 13:21:35,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:35,892 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 634 transitions. [2020-07-07 13:21:35,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:21:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 634 transitions. [2020-07-07 13:21:35,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-07 13:21:35,895 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:35,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:35,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:21:35,896 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:35,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:35,897 INFO L82 PathProgramCache]: Analyzing trace with hash 467731815, now seen corresponding path program 1 times [2020-07-07 13:21:35,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:35,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361821222] [2020-07-07 13:21:35,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:35,994 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:35,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361821222] [2020-07-07 13:21:35,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:35,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:35,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439192376] [2020-07-07 13:21:35,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:35,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:35,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:35,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:35,999 INFO L87 Difference]: Start difference. First operand 507 states and 634 transitions. Second operand 3 states. [2020-07-07 13:21:36,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:36,118 INFO L93 Difference]: Finished difference Result 887 states and 1138 transitions. [2020-07-07 13:21:36,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:36,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-07-07 13:21:36,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:36,125 INFO L225 Difference]: With dead ends: 887 [2020-07-07 13:21:36,125 INFO L226 Difference]: Without dead ends: 523 [2020-07-07 13:21:36,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:36,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-07-07 13:21:36,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2020-07-07 13:21:36,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-07-07 13:21:36,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 650 transitions. [2020-07-07 13:21:36,200 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 650 transitions. Word has length 167 [2020-07-07 13:21:36,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:36,202 INFO L479 AbstractCegarLoop]: Abstraction has 523 states and 650 transitions. [2020-07-07 13:21:36,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:36,202 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 650 transitions. [2020-07-07 13:21:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-07-07 13:21:36,204 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:36,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:36,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:21:36,205 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:36,206 INFO L82 PathProgramCache]: Analyzing trace with hash 611444181, now seen corresponding path program 1 times [2020-07-07 13:21:36,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:36,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108357018] [2020-07-07 13:21:36,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:36,341 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:36,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108357018] [2020-07-07 13:21:36,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:36,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:36,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865807652] [2020-07-07 13:21:36,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:36,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:36,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:36,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:36,344 INFO L87 Difference]: Start difference. First operand 523 states and 650 transitions. Second operand 3 states. [2020-07-07 13:21:36,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:36,445 INFO L93 Difference]: Finished difference Result 1256 states and 1619 transitions. [2020-07-07 13:21:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:36,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-07-07 13:21:36,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:36,451 INFO L225 Difference]: With dead ends: 1256 [2020-07-07 13:21:36,452 INFO L226 Difference]: Without dead ends: 892 [2020-07-07 13:21:36,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:36,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-07-07 13:21:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 890. [2020-07-07 13:21:36,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-07-07 13:21:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1127 transitions. [2020-07-07 13:21:36,540 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1127 transitions. Word has length 168 [2020-07-07 13:21:36,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:36,541 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1127 transitions. [2020-07-07 13:21:36,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:36,541 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1127 transitions. [2020-07-07 13:21:36,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-07-07 13:21:36,543 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:36,544 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:36,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:21:36,544 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:36,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:36,545 INFO L82 PathProgramCache]: Analyzing trace with hash 283864666, now seen corresponding path program 1 times [2020-07-07 13:21:36,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:36,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865005139] [2020-07-07 13:21:36,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:36,617 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:36,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865005139] [2020-07-07 13:21:36,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:36,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:36,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173513975] [2020-07-07 13:21:36,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:36,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:36,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:36,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:36,620 INFO L87 Difference]: Start difference. First operand 890 states and 1127 transitions. Second operand 3 states. [2020-07-07 13:21:36,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:36,813 INFO L93 Difference]: Finished difference Result 2331 states and 3030 transitions. [2020-07-07 13:21:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:36,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-07-07 13:21:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:36,824 INFO L225 Difference]: With dead ends: 2331 [2020-07-07 13:21:36,824 INFO L226 Difference]: Without dead ends: 1617 [2020-07-07 13:21:36,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2020-07-07 13:21:36,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1265. [2020-07-07 13:21:36,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1265 states. [2020-07-07 13:21:36,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1618 transitions. [2020-07-07 13:21:36,937 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1618 transitions. Word has length 169 [2020-07-07 13:21:36,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:36,937 INFO L479 AbstractCegarLoop]: Abstraction has 1265 states and 1618 transitions. [2020-07-07 13:21:36,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1618 transitions. [2020-07-07 13:21:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-07-07 13:21:36,940 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:36,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:36,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:21:36,941 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:36,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:36,941 INFO L82 PathProgramCache]: Analyzing trace with hash 261232412, now seen corresponding path program 1 times [2020-07-07 13:21:36,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:36,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771276390] [2020-07-07 13:21:36,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:37,017 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:37,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771276390] [2020-07-07 13:21:37,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:37,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:21:37,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302452693] [2020-07-07 13:21:37,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:21:37,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:37,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:21:37,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:21:37,020 INFO L87 Difference]: Start difference. First operand 1265 states and 1618 transitions. Second operand 4 states. [2020-07-07 13:21:37,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:37,421 INFO L93 Difference]: Finished difference Result 1462 states and 1856 transitions. [2020-07-07 13:21:37,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:21:37,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-07-07 13:21:37,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:37,434 INFO L225 Difference]: With dead ends: 1462 [2020-07-07 13:21:37,434 INFO L226 Difference]: Without dead ends: 1460 [2020-07-07 13:21:37,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:21:37,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-07-07 13:21:37,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1292. [2020-07-07 13:21:37,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-07-07 13:21:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1654 transitions. [2020-07-07 13:21:37,604 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1654 transitions. Word has length 169 [2020-07-07 13:21:37,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:37,605 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1654 transitions. [2020-07-07 13:21:37,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:21:37,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1654 transitions. [2020-07-07 13:21:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-07 13:21:37,609 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:37,610 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 13:21:37,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:21:37,611 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:37,611 INFO L82 PathProgramCache]: Analyzing trace with hash 780905830, now seen corresponding path program 1 times [2020-07-07 13:21:37,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:37,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663219140] [2020-07-07 13:21:37,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:37,741 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:37,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663219140] [2020-07-07 13:21:37,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:37,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:37,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164329673] [2020-07-07 13:21:37,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:37,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:37,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:37,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:37,745 INFO L87 Difference]: Start difference. First operand 1292 states and 1654 transitions. Second operand 3 states. [2020-07-07 13:21:37,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:37,997 INFO L93 Difference]: Finished difference Result 2391 states and 3111 transitions. [2020-07-07 13:21:37,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:37,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-07-07 13:21:37,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:38,007 INFO L225 Difference]: With dead ends: 2391 [2020-07-07 13:21:38,007 INFO L226 Difference]: Without dead ends: 1292 [2020-07-07 13:21:38,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2020-07-07 13:21:38,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2020-07-07 13:21:38,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-07-07 13:21:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1640 transitions. [2020-07-07 13:21:38,201 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1640 transitions. Word has length 182 [2020-07-07 13:21:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:38,202 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1640 transitions. [2020-07-07 13:21:38,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1640 transitions. [2020-07-07 13:21:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-07-07 13:21:38,208 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:38,209 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 13:21:38,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:21:38,209 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:38,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:38,210 INFO L82 PathProgramCache]: Analyzing trace with hash -2039964467, now seen corresponding path program 1 times [2020-07-07 13:21:38,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:38,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862854095] [2020-07-07 13:21:38,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:38,317 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:38,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862854095] [2020-07-07 13:21:38,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:38,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:38,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403349849] [2020-07-07 13:21:38,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:38,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:38,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:38,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:38,321 INFO L87 Difference]: Start difference. First operand 1292 states and 1640 transitions. Second operand 3 states. [2020-07-07 13:21:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:38,590 INFO L93 Difference]: Finished difference Result 2412 states and 3107 transitions. [2020-07-07 13:21:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:38,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2020-07-07 13:21:38,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:38,599 INFO L225 Difference]: With dead ends: 2412 [2020-07-07 13:21:38,599 INFO L226 Difference]: Without dead ends: 1313 [2020-07-07 13:21:38,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:38,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-07-07 13:21:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1310. [2020-07-07 13:21:38,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-07-07 13:21:38,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1647 transitions. [2020-07-07 13:21:38,895 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1647 transitions. Word has length 183 [2020-07-07 13:21:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:38,896 INFO L479 AbstractCegarLoop]: Abstraction has 1310 states and 1647 transitions. [2020-07-07 13:21:38,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:38,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1647 transitions. [2020-07-07 13:21:38,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-07-07 13:21:38,902 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:38,903 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-07-07 13:21:38,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:21:38,904 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:38,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:38,904 INFO L82 PathProgramCache]: Analyzing trace with hash -293442268, now seen corresponding path program 1 times [2020-07-07 13:21:38,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:38,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139329615] [2020-07-07 13:21:38,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:39,003 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:39,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139329615] [2020-07-07 13:21:39,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:39,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:39,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658882596] [2020-07-07 13:21:39,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:39,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:39,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:39,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:39,012 INFO L87 Difference]: Start difference. First operand 1310 states and 1647 transitions. Second operand 3 states. [2020-07-07 13:21:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:39,427 INFO L93 Difference]: Finished difference Result 2612 states and 3392 transitions. [2020-07-07 13:21:39,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:39,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-07-07 13:21:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:39,436 INFO L225 Difference]: With dead ends: 2612 [2020-07-07 13:21:39,437 INFO L226 Difference]: Without dead ends: 1429 [2020-07-07 13:21:39,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2020-07-07 13:21:39,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1390. [2020-07-07 13:21:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2020-07-07 13:21:39,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1757 transitions. [2020-07-07 13:21:39,639 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1757 transitions. Word has length 187 [2020-07-07 13:21:39,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:39,640 INFO L479 AbstractCegarLoop]: Abstraction has 1390 states and 1757 transitions. [2020-07-07 13:21:39,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:39,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1757 transitions. [2020-07-07 13:21:39,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-07-07 13:21:39,643 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:39,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-07-07 13:21:39,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 13:21:39,647 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:39,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:39,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1739161684, now seen corresponding path program 1 times [2020-07-07 13:21:39,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:39,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668575283] [2020-07-07 13:21:39,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:39,727 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:39,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668575283] [2020-07-07 13:21:39,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:39,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:39,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793233875] [2020-07-07 13:21:39,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:39,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:39,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:39,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:39,729 INFO L87 Difference]: Start difference. First operand 1390 states and 1757 transitions. Second operand 3 states. [2020-07-07 13:21:40,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:40,201 INFO L93 Difference]: Finished difference Result 2715 states and 3508 transitions. [2020-07-07 13:21:40,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:40,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2020-07-07 13:21:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:40,215 INFO L225 Difference]: With dead ends: 2715 [2020-07-07 13:21:40,215 INFO L226 Difference]: Without dead ends: 1518 [2020-07-07 13:21:40,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:40,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2020-07-07 13:21:40,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1467. [2020-07-07 13:21:40,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1467 states. [2020-07-07 13:21:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 1829 transitions. [2020-07-07 13:21:40,438 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 1829 transitions. Word has length 189 [2020-07-07 13:21:40,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:40,438 INFO L479 AbstractCegarLoop]: Abstraction has 1467 states and 1829 transitions. [2020-07-07 13:21:40,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:40,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 1829 transitions. [2020-07-07 13:21:40,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-07-07 13:21:40,443 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:40,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-07-07 13:21:40,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 13:21:40,443 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:40,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:40,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1187027627, now seen corresponding path program 1 times [2020-07-07 13:21:40,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:40,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838281108] [2020-07-07 13:21:40,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:40,529 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:40,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838281108] [2020-07-07 13:21:40,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:40,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:21:40,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111811428] [2020-07-07 13:21:40,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:21:40,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:40,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:21:40,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:21:40,532 INFO L87 Difference]: Start difference. First operand 1467 states and 1829 transitions. Second operand 4 states. [2020-07-07 13:21:40,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:40,891 INFO L93 Difference]: Finished difference Result 1670 states and 2059 transitions. [2020-07-07 13:21:40,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:21:40,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 193 [2020-07-07 13:21:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:40,901 INFO L225 Difference]: With dead ends: 1670 [2020-07-07 13:21:40,901 INFO L226 Difference]: Without dead ends: 1668 [2020-07-07 13:21:40,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:21:40,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-07-07 13:21:41,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1457. [2020-07-07 13:21:41,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-07-07 13:21:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1817 transitions. [2020-07-07 13:21:41,054 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1817 transitions. Word has length 193 [2020-07-07 13:21:41,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:41,054 INFO L479 AbstractCegarLoop]: Abstraction has 1457 states and 1817 transitions. [2020-07-07 13:21:41,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:21:41,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1817 transitions. [2020-07-07 13:21:41,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-07-07 13:21:41,059 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:41,059 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:41,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 13:21:41,060 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:41,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:41,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1575854146, now seen corresponding path program 1 times [2020-07-07 13:21:41,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:41,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947502882] [2020-07-07 13:21:41,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:41,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:41,165 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:41,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947502882] [2020-07-07 13:21:41,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:41,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:21:41,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15179767] [2020-07-07 13:21:41,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:21:41,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:41,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:21:41,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:21:41,168 INFO L87 Difference]: Start difference. First operand 1457 states and 1817 transitions. Second operand 4 states. [2020-07-07 13:21:41,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:41,535 INFO L93 Difference]: Finished difference Result 1625 states and 2006 transitions. [2020-07-07 13:21:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:21:41,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-07-07 13:21:41,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:41,544 INFO L225 Difference]: With dead ends: 1625 [2020-07-07 13:21:41,544 INFO L226 Difference]: Without dead ends: 1623 [2020-07-07 13:21:41,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:21:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2020-07-07 13:21:41,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1452. [2020-07-07 13:21:41,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-07-07 13:21:41,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1811 transitions. [2020-07-07 13:21:41,698 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1811 transitions. Word has length 199 [2020-07-07 13:21:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:41,698 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1811 transitions. [2020-07-07 13:21:41,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:21:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1811 transitions. [2020-07-07 13:21:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-07 13:21:41,703 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:41,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2020-07-07 13:21:41,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 13:21:41,704 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:41,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:41,705 INFO L82 PathProgramCache]: Analyzing trace with hash -455131385, now seen corresponding path program 1 times [2020-07-07 13:21:41,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:41,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352463312] [2020-07-07 13:21:41,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:41,799 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:41,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352463312] [2020-07-07 13:21:41,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:41,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:41,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204943853] [2020-07-07 13:21:41,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:41,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:41,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:41,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:41,802 INFO L87 Difference]: Start difference. First operand 1452 states and 1811 transitions. Second operand 3 states. [2020-07-07 13:21:42,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:42,203 INFO L93 Difference]: Finished difference Result 3925 states and 4991 transitions. [2020-07-07 13:21:42,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:42,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-07-07 13:21:42,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:42,218 INFO L225 Difference]: With dead ends: 3925 [2020-07-07 13:21:42,219 INFO L226 Difference]: Without dead ends: 2666 [2020-07-07 13:21:42,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:42,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2020-07-07 13:21:42,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2664. [2020-07-07 13:21:42,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2020-07-07 13:21:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3343 transitions. [2020-07-07 13:21:42,505 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3343 transitions. Word has length 200 [2020-07-07 13:21:42,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:42,506 INFO L479 AbstractCegarLoop]: Abstraction has 2664 states and 3343 transitions. [2020-07-07 13:21:42,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:42,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3343 transitions. [2020-07-07 13:21:42,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-07-07 13:21:42,511 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:42,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2020-07-07 13:21:42,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 13:21:42,512 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:42,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:42,512 INFO L82 PathProgramCache]: Analyzing trace with hash 595350838, now seen corresponding path program 1 times [2020-07-07 13:21:42,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:42,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722568903] [2020-07-07 13:21:42,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:42,628 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:42,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722568903] [2020-07-07 13:21:42,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:42,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:21:42,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400645270] [2020-07-07 13:21:42,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:21:42,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:42,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:21:42,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:21:42,631 INFO L87 Difference]: Start difference. First operand 2664 states and 3343 transitions. Second operand 4 states. [2020-07-07 13:21:43,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:43,349 INFO L93 Difference]: Finished difference Result 8995 states and 11372 transitions. [2020-07-07 13:21:43,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:21:43,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-07-07 13:21:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:43,384 INFO L225 Difference]: With dead ends: 8995 [2020-07-07 13:21:43,384 INFO L226 Difference]: Without dead ends: 6524 [2020-07-07 13:21:43,393 INFO L675 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 [2020-07-07 13:21:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6524 states. [2020-07-07 13:21:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6524 to 4051. [2020-07-07 13:21:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4051 states. [2020-07-07 13:21:43,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4051 states to 4051 states and 5031 transitions. [2020-07-07 13:21:43,899 INFO L78 Accepts]: Start accepts. Automaton has 4051 states and 5031 transitions. Word has length 201 [2020-07-07 13:21:43,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:43,900 INFO L479 AbstractCegarLoop]: Abstraction has 4051 states and 5031 transitions. [2020-07-07 13:21:43,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:21:43,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4051 states and 5031 transitions. [2020-07-07 13:21:43,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-07-07 13:21:43,905 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:43,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2020-07-07 13:21:43,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 13:21:43,906 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:43,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:43,907 INFO L82 PathProgramCache]: Analyzing trace with hash -690870181, now seen corresponding path program 1 times [2020-07-07 13:21:43,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:43,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604219035] [2020-07-07 13:21:43,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:21:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:21:44,018 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:44,019 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:21:44,019 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:21:44,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 13:21:44,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:21:44 BoogieIcfgContainer [2020-07-07 13:21:44,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:21:44,048 INFO L168 Benchmark]: Toolchain (without parser) took 12067.08 ms. Allocated memory was 143.7 MB in the beginning and 622.9 MB in the end (delta: 479.2 MB). Free memory was 103.0 MB in the beginning and 404.9 MB in the end (delta: -301.9 MB). Peak memory consumption was 177.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:44,049 INFO L168 Benchmark]: CDTParser took 0.89 ms. Allocated memory is still 143.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:21:44,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 542.03 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 102.6 MB in the beginning and 180.1 MB in the end (delta: -77.5 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:44,050 INFO L168 Benchmark]: Boogie Preprocessor took 66.30 ms. Allocated memory is still 205.0 MB. Free memory was 180.1 MB in the beginning and 177.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:44,051 INFO L168 Benchmark]: RCFGBuilder took 1084.04 ms. Allocated memory is still 205.0 MB. Free memory was 177.4 MB in the beginning and 106.2 MB in the end (delta: 71.2 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:44,052 INFO L168 Benchmark]: TraceAbstraction took 10369.34 ms. Allocated memory was 205.0 MB in the beginning and 622.9 MB in the end (delta: 417.9 MB). Free memory was 106.2 MB in the beginning and 404.9 MB in the end (delta: -298.7 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:21:44,054 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89 ms. Allocated memory is still 143.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 542.03 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 102.6 MB in the beginning and 180.1 MB in the end (delta: -77.5 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.30 ms. Allocated memory is still 205.0 MB. Free memory was 180.1 MB in the beginning and 177.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1084.04 ms. Allocated memory is still 205.0 MB. Free memory was 177.4 MB in the beginning and 106.2 MB in the end (delta: 71.2 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10369.34 ms. Allocated memory was 205.0 MB in the beginning and 622.9 MB in the end (delta: 417.9 MB). Free memory was 106.2 MB in the beginning and 404.9 MB in the end (delta: -298.7 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 640]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L645] int s ; [L646] int tmp ; [L650] s = 8464 [L651] CALL ssl3_accept(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L72] s__s3__tmp__reuse_message = 0 [L73] s__state = initial_state [L74] blastFlag = 0 [L75] tmp = __VERIFIER_nondet_int() [L76] Time = tmp [L77] cb = 0 [L78] ret = -1 [L79] skip = 0 [L80] got_new_session = 0 [L81] COND FALSE !(s__info_callback != 0) [L84] COND FALSE !(s__ctx__info_callback != 0) [L88] s__in_handshake ++ [L89] COND TRUE tmp___1 + 12288 [L90] COND TRUE tmp___2 + 16384 [L94] COND FALSE !(s__cert == 0) [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND TRUE s__state == 8464 [L271] s__shutdown = 0 [L272] ret = __VERIFIER_nondet_int() [L273] COND TRUE blastFlag == 0 [L274] blastFlag = 1 [L276] COND FALSE !(ret <= 0) [L279] got_new_session = 1 [L280] s__state = 8496 [L281] s__init_num = 0 [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE s__state != 8656 [L606] COND TRUE tmp___2 != -16384 [L607] COND FALSE !(state == 8496) [L614] COND FALSE !(\read(s__debug)) [L620] COND FALSE !(cb != 0) [L629] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND TRUE s__state == 8496 [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 1 [L287] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 8512 [L297] s__init_num = 0 [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE s__state != 8656 [L606] COND TRUE tmp___2 != -16384 [L607] COND TRUE state == 8496 [L640] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 426 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.2s, OverallIterations: 15, TraceHistogramMax: 2, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6683 SDtfs, 6299 SDslu, 6738 SDs, 0 SdLazy, 1313 SolverSat, 235 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4051occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 3505 StatesRemovedByMinimization, 12 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 proved your program to be incorrect! Received shutdown request...