/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 0.1.25-72570d3 [2020-08-22 18:59:46,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:59:46,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:59:46,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:59:46,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:59:46,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:59:46,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:59:46,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:59:46,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:59:46,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:59:46,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:59:46,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:59:46,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:59:46,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:59:46,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:59:46,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:59:46,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:59:46,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:59:46,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:59:46,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:59:46,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:59:46,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:59:46,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:59:46,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:59:46,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:59:46,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:59:46,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:59:46,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:59:46,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:59:46,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:59:46,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:59:46,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:59:46,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:59:46,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:59:46,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:59:46,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:59:46,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:59:46,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:59:46,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:59:46,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:59:46,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:59:46,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:59:46,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:59:46,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:59:46,652 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:59:46,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:59:46,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:59:46,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:59:46,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:59:46,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:59:46,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:59:46,654 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:59:46,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:59:46,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:59:46,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:59:46,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:59:46,955 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:59:46,956 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-08-22 18:59:47,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/583372bd6/302cce673c68494e9ec78d81c4b036b9/FLAGdb4fae968 [2020-08-22 18:59:47,598 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:59:47,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-08-22 18:59:47,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/583372bd6/302cce673c68494e9ec78d81c4b036b9/FLAGdb4fae968 [2020-08-22 18:59:47,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/583372bd6/302cce673c68494e9ec78d81c4b036b9 [2020-08-22 18:59:47,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:59:47,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:59:47,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:59:47,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:59:47,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:59:47,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:59:47" (1/1) ... [2020-08-22 18:59:47,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce4c944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:47, skipping insertion in model container [2020-08-22 18:59:47,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:59:47" (1/1) ... [2020-08-22 18:59:47,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:59:47,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:59:48,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:59:48,313 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:59:48,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:59:48,493 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:59:48,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:48 WrapperNode [2020-08-22 18:59:48,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:59:48,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:59:48,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:59:48,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:59:48,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:48" (1/1) ... [2020-08-22 18:59:48,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:48" (1/1) ... [2020-08-22 18:59:48,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:48" (1/1) ... [2020-08-22 18:59:48,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:48" (1/1) ... [2020-08-22 18:59:48,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:48" (1/1) ... [2020-08-22 18:59:48,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:48" (1/1) ... [2020-08-22 18:59:48,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:48" (1/1) ... [2020-08-22 18:59:48,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:59:48,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:59:48,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:59:48,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:59:48,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:48" (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 [2020-08-22 18:59:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:59:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:59:48,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-22 18:59:48,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:59:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:59:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 18:59:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:59:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-22 18:59:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-22 18:59:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:59:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:59:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:59:48,862 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 18:59:49,617 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-22 18:59:49,617 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-22 18:59:49,634 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:59:49,635 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 18:59:49,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:59:49 BoogieIcfgContainer [2020-08-22 18:59:49,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:59:49,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:59:49,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:59:49,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:59:49,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:59:47" (1/3) ... [2020-08-22 18:59:49,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c620f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:59:49, skipping insertion in model container [2020-08-22 18:59:49,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:59:48" (2/3) ... [2020-08-22 18:59:49,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c620f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:59:49, skipping insertion in model container [2020-08-22 18:59:49,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:59:49" (3/3) ... [2020-08-22 18:59:49,654 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2020-08-22 18:59:49,667 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:59:49,677 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:59:49,693 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:59:49,719 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:59:49,719 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:59:49,719 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:59:49,720 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:59:49,720 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:59:49,720 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:59:49,720 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:59:49,720 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:59:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states. [2020-08-22 18:59:49,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-22 18:59:49,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:49,770 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] [2020-08-22 18:59:49,771 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:49,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1268045474, now seen corresponding path program 1 times [2020-08-22 18:59:49,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:49,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854057613] [2020-08-22 18:59:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:49,874 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:50,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:50,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854057613] [2020-08-22 18:59:50,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:50,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:59:50,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808563020] [2020-08-22 18:59:50,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:59:50,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:50,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:59:50,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:59:50,302 INFO L87 Difference]: Start difference. First operand 426 states. Second operand 6 states. [2020-08-22 18:59:50,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:50,897 INFO L93 Difference]: Finished difference Result 802 states and 1073 transitions. [2020-08-22 18:59:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:59:50,899 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-08-22 18:59:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:50,923 INFO L225 Difference]: With dead ends: 802 [2020-08-22 18:59:50,923 INFO L226 Difference]: Without dead ends: 459 [2020-08-22 18:59:50,931 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 [2020-08-22 18:59:50,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-08-22 18:59:51,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 444. [2020-08-22 18:59:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-08-22 18:59:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 535 transitions. [2020-08-22 18:59:51,074 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 535 transitions. Word has length 158 [2020-08-22 18:59:51,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:51,075 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 535 transitions. [2020-08-22 18:59:51,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:59:51,076 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 535 transitions. [2020-08-22 18:59:51,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 18:59:51,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:51,080 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] [2020-08-22 18:59:51,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:59:51,081 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:51,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:51,082 INFO L82 PathProgramCache]: Analyzing trace with hash 796395907, now seen corresponding path program 1 times [2020-08-22 18:59:51,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:51,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068049864] [2020-08-22 18:59:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:51,085 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:51,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:51,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068049864] [2020-08-22 18:59:51,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:51,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:59:51,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422080242] [2020-08-22 18:59:51,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:59:51,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:51,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:59:51,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:59:51,339 INFO L87 Difference]: Start difference. First operand 444 states and 535 transitions. Second operand 6 states. [2020-08-22 18:59:51,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:51,808 INFO L93 Difference]: Finished difference Result 839 states and 1069 transitions. [2020-08-22 18:59:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:59:51,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-08-22 18:59:51,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:51,813 INFO L225 Difference]: With dead ends: 839 [2020-08-22 18:59:51,813 INFO L226 Difference]: Without dead ends: 525 [2020-08-22 18:59:51,816 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 [2020-08-22 18:59:51,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-08-22 18:59:51,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 507. [2020-08-22 18:59:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-08-22 18:59:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 634 transitions. [2020-08-22 18:59:51,881 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 634 transitions. Word has length 166 [2020-08-22 18:59:51,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:51,882 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 634 transitions. [2020-08-22 18:59:51,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:59:51,883 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 634 transitions. [2020-08-22 18:59:51,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-22 18:59:51,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:51,886 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] [2020-08-22 18:59:51,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:59:51,886 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:51,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:51,887 INFO L82 PathProgramCache]: Analyzing trace with hash 467731815, now seen corresponding path program 1 times [2020-08-22 18:59:51,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:51,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615687425] [2020-08-22 18:59:51,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:51,890 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:52,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:52,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615687425] [2020-08-22 18:59:52,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:52,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:52,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13483145] [2020-08-22 18:59:52,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:52,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:52,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:52,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:52,039 INFO L87 Difference]: Start difference. First operand 507 states and 634 transitions. Second operand 3 states. [2020-08-22 18:59:52,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:52,155 INFO L93 Difference]: Finished difference Result 887 states and 1138 transitions. [2020-08-22 18:59:52,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:52,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-08-22 18:59:52,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:52,163 INFO L225 Difference]: With dead ends: 887 [2020-08-22 18:59:52,164 INFO L226 Difference]: Without dead ends: 523 [2020-08-22 18:59:52,165 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 [2020-08-22 18:59:52,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-22 18:59:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2020-08-22 18:59:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-08-22 18:59:52,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 650 transitions. [2020-08-22 18:59:52,222 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 650 transitions. Word has length 167 [2020-08-22 18:59:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:52,223 INFO L479 AbstractCegarLoop]: Abstraction has 523 states and 650 transitions. [2020-08-22 18:59:52,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:52,223 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 650 transitions. [2020-08-22 18:59:52,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-22 18:59:52,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:52,227 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] [2020-08-22 18:59:52,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:59:52,228 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:52,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:52,228 INFO L82 PathProgramCache]: Analyzing trace with hash 611444181, now seen corresponding path program 1 times [2020-08-22 18:59:52,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:52,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551683708] [2020-08-22 18:59:52,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:52,231 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:52,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:52,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:52,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551683708] [2020-08-22 18:59:52,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:52,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:52,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336980390] [2020-08-22 18:59:52,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:52,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:52,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:52,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:52,365 INFO L87 Difference]: Start difference. First operand 523 states and 650 transitions. Second operand 3 states. [2020-08-22 18:59:52,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:52,472 INFO L93 Difference]: Finished difference Result 1256 states and 1619 transitions. [2020-08-22 18:59:52,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:52,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-08-22 18:59:52,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:52,478 INFO L225 Difference]: With dead ends: 1256 [2020-08-22 18:59:52,478 INFO L226 Difference]: Without dead ends: 892 [2020-08-22 18:59:52,480 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 [2020-08-22 18:59:52,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-22 18:59:52,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 890. [2020-08-22 18:59:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-08-22 18:59:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1127 transitions. [2020-08-22 18:59:52,589 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1127 transitions. Word has length 168 [2020-08-22 18:59:52,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:52,589 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1127 transitions. [2020-08-22 18:59:52,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:52,590 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1127 transitions. [2020-08-22 18:59:52,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-08-22 18:59:52,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:52,594 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] [2020-08-22 18:59:52,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:59:52,595 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:52,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:52,596 INFO L82 PathProgramCache]: Analyzing trace with hash 283864666, now seen corresponding path program 1 times [2020-08-22 18:59:52,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:52,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966757797] [2020-08-22 18:59:52,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:52,599 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:52,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:52,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966757797] [2020-08-22 18:59:52,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:52,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:52,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741767265] [2020-08-22 18:59:52,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:52,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:52,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:52,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:52,703 INFO L87 Difference]: Start difference. First operand 890 states and 1127 transitions. Second operand 3 states. [2020-08-22 18:59:52,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:52,975 INFO L93 Difference]: Finished difference Result 2331 states and 3030 transitions. [2020-08-22 18:59:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:52,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-08-22 18:59:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:52,985 INFO L225 Difference]: With dead ends: 2331 [2020-08-22 18:59:52,985 INFO L226 Difference]: Without dead ends: 1617 [2020-08-22 18:59:52,988 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 [2020-08-22 18:59:52,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2020-08-22 18:59:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1265. [2020-08-22 18:59:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1265 states. [2020-08-22 18:59:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1618 transitions. [2020-08-22 18:59:53,126 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1618 transitions. Word has length 169 [2020-08-22 18:59:53,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:53,127 INFO L479 AbstractCegarLoop]: Abstraction has 1265 states and 1618 transitions. [2020-08-22 18:59:53,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:53,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1618 transitions. [2020-08-22 18:59:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-08-22 18:59:53,129 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:53,130 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] [2020-08-22 18:59:53,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:59:53,130 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:53,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:53,131 INFO L82 PathProgramCache]: Analyzing trace with hash 261232412, now seen corresponding path program 1 times [2020-08-22 18:59:53,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:53,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739760532] [2020-08-22 18:59:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:53,136 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:53,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:53,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739760532] [2020-08-22 18:59:53,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:53,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:59:53,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659573553] [2020-08-22 18:59:53,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:59:53,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:53,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:59:53,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:59:53,239 INFO L87 Difference]: Start difference. First operand 1265 states and 1618 transitions. Second operand 4 states. [2020-08-22 18:59:53,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:53,657 INFO L93 Difference]: Finished difference Result 1462 states and 1856 transitions. [2020-08-22 18:59:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:59:53,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-08-22 18:59:53,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:53,665 INFO L225 Difference]: With dead ends: 1462 [2020-08-22 18:59:53,665 INFO L226 Difference]: Without dead ends: 1460 [2020-08-22 18:59:53,667 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 [2020-08-22 18:59:53,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-08-22 18:59:53,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1292. [2020-08-22 18:59:53,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-08-22 18:59:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1654 transitions. [2020-08-22 18:59:53,805 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1654 transitions. Word has length 169 [2020-08-22 18:59:53,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:53,805 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1654 transitions. [2020-08-22 18:59:53,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:59:53,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1654 transitions. [2020-08-22 18:59:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-08-22 18:59:53,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:53,810 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] [2020-08-22 18:59:53,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:59:53,810 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:53,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:53,811 INFO L82 PathProgramCache]: Analyzing trace with hash 780905830, now seen corresponding path program 1 times [2020-08-22 18:59:53,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:53,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673173415] [2020-08-22 18:59:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:53,839 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:53,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:53,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:53,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673173415] [2020-08-22 18:59:53,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:53,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:53,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182569056] [2020-08-22 18:59:53,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:53,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:53,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:53,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:53,928 INFO L87 Difference]: Start difference. First operand 1292 states and 1654 transitions. Second operand 3 states. [2020-08-22 18:59:54,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:54,135 INFO L93 Difference]: Finished difference Result 2391 states and 3111 transitions. [2020-08-22 18:59:54,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:54,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-08-22 18:59:54,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:54,143 INFO L225 Difference]: With dead ends: 2391 [2020-08-22 18:59:54,143 INFO L226 Difference]: Without dead ends: 1292 [2020-08-22 18:59:54,146 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 [2020-08-22 18:59:54,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2020-08-22 18:59:54,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2020-08-22 18:59:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-08-22 18:59:54,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1640 transitions. [2020-08-22 18:59:54,264 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1640 transitions. Word has length 182 [2020-08-22 18:59:54,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:54,264 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1640 transitions. [2020-08-22 18:59:54,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:54,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1640 transitions. [2020-08-22 18:59:54,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-08-22 18:59:54,268 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:54,268 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] [2020-08-22 18:59:54,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 18:59:54,269 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:54,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:54,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2039964467, now seen corresponding path program 1 times [2020-08-22 18:59:54,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:54,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134604675] [2020-08-22 18:59:54,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:54,280 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:54,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:54,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134604675] [2020-08-22 18:59:54,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:54,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:54,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606785061] [2020-08-22 18:59:54,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:54,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:54,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:54,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:54,348 INFO L87 Difference]: Start difference. First operand 1292 states and 1640 transitions. Second operand 3 states. [2020-08-22 18:59:54,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:54,510 INFO L93 Difference]: Finished difference Result 2412 states and 3107 transitions. [2020-08-22 18:59:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:54,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2020-08-22 18:59:54,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:54,518 INFO L225 Difference]: With dead ends: 2412 [2020-08-22 18:59:54,518 INFO L226 Difference]: Without dead ends: 1313 [2020-08-22 18:59:54,521 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 [2020-08-22 18:59:54,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-08-22 18:59:54,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1310. [2020-08-22 18:59:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-08-22 18:59:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1647 transitions. [2020-08-22 18:59:54,718 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1647 transitions. Word has length 183 [2020-08-22 18:59:54,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:54,719 INFO L479 AbstractCegarLoop]: Abstraction has 1310 states and 1647 transitions. [2020-08-22 18:59:54,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:54,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1647 transitions. [2020-08-22 18:59:54,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-08-22 18:59:54,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:54,726 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] [2020-08-22 18:59:54,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 18:59:54,727 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:54,728 INFO L82 PathProgramCache]: Analyzing trace with hash -293442268, now seen corresponding path program 1 times [2020-08-22 18:59:54,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:54,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341218530] [2020-08-22 18:59:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:54,741 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:54,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:54,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341218530] [2020-08-22 18:59:54,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:54,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:54,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68860209] [2020-08-22 18:59:54,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:54,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:54,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:54,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:54,872 INFO L87 Difference]: Start difference. First operand 1310 states and 1647 transitions. Second operand 3 states. [2020-08-22 18:59:55,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:55,451 INFO L93 Difference]: Finished difference Result 2612 states and 3392 transitions. [2020-08-22 18:59:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:55,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-08-22 18:59:55,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:55,464 INFO L225 Difference]: With dead ends: 2612 [2020-08-22 18:59:55,464 INFO L226 Difference]: Without dead ends: 1429 [2020-08-22 18:59:55,469 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 [2020-08-22 18:59:55,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2020-08-22 18:59:55,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1390. [2020-08-22 18:59:55,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2020-08-22 18:59:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1757 transitions. [2020-08-22 18:59:55,781 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1757 transitions. Word has length 187 [2020-08-22 18:59:55,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:55,783 INFO L479 AbstractCegarLoop]: Abstraction has 1390 states and 1757 transitions. [2020-08-22 18:59:55,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1757 transitions. [2020-08-22 18:59:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-22 18:59:55,794 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:55,794 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] [2020-08-22 18:59:55,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 18:59:55,795 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:55,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:55,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1739161684, now seen corresponding path program 1 times [2020-08-22 18:59:55,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:55,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591158487] [2020-08-22 18:59:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:55,813 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:55,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:55,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591158487] [2020-08-22 18:59:55,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:55,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:55,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370639571] [2020-08-22 18:59:55,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:55,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:55,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:55,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:55,955 INFO L87 Difference]: Start difference. First operand 1390 states and 1757 transitions. Second operand 3 states. [2020-08-22 18:59:56,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:56,524 INFO L93 Difference]: Finished difference Result 2715 states and 3508 transitions. [2020-08-22 18:59:56,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:56,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2020-08-22 18:59:56,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:56,533 INFO L225 Difference]: With dead ends: 2715 [2020-08-22 18:59:56,533 INFO L226 Difference]: Without dead ends: 1518 [2020-08-22 18:59:56,536 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 [2020-08-22 18:59:56,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2020-08-22 18:59:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1467. [2020-08-22 18:59:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1467 states. [2020-08-22 18:59:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 1829 transitions. [2020-08-22 18:59:56,713 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 1829 transitions. Word has length 189 [2020-08-22 18:59:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:56,714 INFO L479 AbstractCegarLoop]: Abstraction has 1467 states and 1829 transitions. [2020-08-22 18:59:56,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:56,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 1829 transitions. [2020-08-22 18:59:56,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-22 18:59:56,718 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:56,719 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] [2020-08-22 18:59:56,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 18:59:56,719 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:56,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:56,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1187027627, now seen corresponding path program 1 times [2020-08-22 18:59:56,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:56,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351229292] [2020-08-22 18:59:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:56,735 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:56,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:56,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351229292] [2020-08-22 18:59:56,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:56,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:59:56,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457724104] [2020-08-22 18:59:56,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:59:56,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:56,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:59:56,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:59:56,845 INFO L87 Difference]: Start difference. First operand 1467 states and 1829 transitions. Second operand 4 states. [2020-08-22 18:59:57,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:57,339 INFO L93 Difference]: Finished difference Result 1670 states and 2059 transitions. [2020-08-22 18:59:57,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:59:57,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 193 [2020-08-22 18:59:57,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:57,352 INFO L225 Difference]: With dead ends: 1670 [2020-08-22 18:59:57,352 INFO L226 Difference]: Without dead ends: 1668 [2020-08-22 18:59:57,354 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 [2020-08-22 18:59:57,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-08-22 18:59:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1457. [2020-08-22 18:59:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-08-22 18:59:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1817 transitions. [2020-08-22 18:59:57,547 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1817 transitions. Word has length 193 [2020-08-22 18:59:57,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:57,548 INFO L479 AbstractCegarLoop]: Abstraction has 1457 states and 1817 transitions. [2020-08-22 18:59:57,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:59:57,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1817 transitions. [2020-08-22 18:59:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-08-22 18:59:57,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:57,553 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] [2020-08-22 18:59:57,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 18:59:57,553 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:57,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:57,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1575854146, now seen corresponding path program 1 times [2020-08-22 18:59:57,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:57,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765774285] [2020-08-22 18:59:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:57,562 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:57,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:57,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765774285] [2020-08-22 18:59:57,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:57,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:59:57,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935680314] [2020-08-22 18:59:57,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:59:57,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:57,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:59:57,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:59:57,656 INFO L87 Difference]: Start difference. First operand 1457 states and 1817 transitions. Second operand 4 states. [2020-08-22 18:59:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:58,091 INFO L93 Difference]: Finished difference Result 1625 states and 2006 transitions. [2020-08-22 18:59:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:59:58,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-08-22 18:59:58,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:58,099 INFO L225 Difference]: With dead ends: 1625 [2020-08-22 18:59:58,100 INFO L226 Difference]: Without dead ends: 1623 [2020-08-22 18:59:58,101 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 [2020-08-22 18:59:58,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2020-08-22 18:59:58,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1452. [2020-08-22 18:59:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-08-22 18:59:58,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1811 transitions. [2020-08-22 18:59:58,238 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1811 transitions. Word has length 199 [2020-08-22 18:59:58,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:58,239 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1811 transitions. [2020-08-22 18:59:58,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:59:58,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1811 transitions. [2020-08-22 18:59:58,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 18:59:58,243 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:58,244 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] [2020-08-22 18:59:58,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 18:59:58,244 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:58,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:58,245 INFO L82 PathProgramCache]: Analyzing trace with hash -455131385, now seen corresponding path program 1 times [2020-08-22 18:59:58,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:58,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780904695] [2020-08-22 18:59:58,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:58,253 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:58,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:58,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780904695] [2020-08-22 18:59:58,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:58,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:59:58,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150461537] [2020-08-22 18:59:58,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:59:58,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:58,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:59:58,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:59:58,326 INFO L87 Difference]: Start difference. First operand 1452 states and 1811 transitions. Second operand 3 states. [2020-08-22 18:59:58,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:58,803 INFO L93 Difference]: Finished difference Result 3925 states and 4991 transitions. [2020-08-22 18:59:58,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:59:58,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-08-22 18:59:58,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:58,821 INFO L225 Difference]: With dead ends: 3925 [2020-08-22 18:59:58,822 INFO L226 Difference]: Without dead ends: 2666 [2020-08-22 18:59:58,827 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 [2020-08-22 18:59:58,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2020-08-22 18:59:59,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2664. [2020-08-22 18:59:59,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2020-08-22 18:59:59,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3343 transitions. [2020-08-22 18:59:59,105 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3343 transitions. Word has length 200 [2020-08-22 18:59:59,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:59,105 INFO L479 AbstractCegarLoop]: Abstraction has 2664 states and 3343 transitions. [2020-08-22 18:59:59,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:59:59,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3343 transitions. [2020-08-22 18:59:59,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-08-22 18:59:59,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:59,111 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] [2020-08-22 18:59:59,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 18:59:59,112 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:59,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:59,112 INFO L82 PathProgramCache]: Analyzing trace with hash 595350838, now seen corresponding path program 1 times [2020-08-22 18:59:59,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:59,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157464319] [2020-08-22 18:59:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:59,130 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:59,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:59,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157464319] [2020-08-22 18:59:59,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:59,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:59:59,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827367474] [2020-08-22 18:59:59,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:59:59,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:59,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:59:59,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:59:59,251 INFO L87 Difference]: Start difference. First operand 2664 states and 3343 transitions. Second operand 4 states. [2020-08-22 19:00:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:00:00,149 INFO L93 Difference]: Finished difference Result 8995 states and 11372 transitions. [2020-08-22 19:00:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:00:00,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-08-22 19:00:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:00:00,191 INFO L225 Difference]: With dead ends: 8995 [2020-08-22 19:00:00,191 INFO L226 Difference]: Without dead ends: 6524 [2020-08-22 19:00:00,206 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 [2020-08-22 19:00:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6524 states. [2020-08-22 19:00:00,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6524 to 4051. [2020-08-22 19:00:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4051 states. [2020-08-22 19:00:00,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4051 states to 4051 states and 5031 transitions. [2020-08-22 19:00:00,910 INFO L78 Accepts]: Start accepts. Automaton has 4051 states and 5031 transitions. Word has length 201 [2020-08-22 19:00:00,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:00:00,911 INFO L479 AbstractCegarLoop]: Abstraction has 4051 states and 5031 transitions. [2020-08-22 19:00:00,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:00:00,911 INFO L276 IsEmpty]: Start isEmpty. Operand 4051 states and 5031 transitions. [2020-08-22 19:00:00,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-08-22 19:00:00,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:00:00,919 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] [2020-08-22 19:00:00,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 19:00:00,920 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:00:00,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:00:00,920 INFO L82 PathProgramCache]: Analyzing trace with hash -690870181, now seen corresponding path program 1 times [2020-08-22 19:00:00,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:00:00,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374752976] [2020-08-22 19:00:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:00:00,930 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:00:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:00:00,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:00:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:00:00,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:00:01,067 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:00:01,068 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:00:01,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 19:00:01,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:00:01 BoogieIcfgContainer [2020-08-22 19:00:01,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:00:01,129 INFO L168 Benchmark]: Toolchain (without parser) took 13214.91 ms. Allocated memory was 140.5 MB in the beginning and 633.3 MB in the end (delta: 492.8 MB). Free memory was 104.0 MB in the beginning and 451.8 MB in the end (delta: -347.9 MB). Peak memory consumption was 144.9 MB. Max. memory is 7.1 GB. [2020-08-22 19:00:01,131 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:00:01,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.21 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 104.0 MB in the beginning and 179.7 MB in the end (delta: -75.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:00:01,136 INFO L168 Benchmark]: Boogie Preprocessor took 62.20 ms. Allocated memory is still 204.5 MB. Free memory was 179.7 MB in the beginning and 176.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-08-22 19:00:01,142 INFO L168 Benchmark]: RCFGBuilder took 1085.48 ms. Allocated memory is still 204.5 MB. Free memory was 176.9 MB in the beginning and 105.5 MB in the end (delta: 71.4 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:00:01,145 INFO L168 Benchmark]: TraceAbstraction took 11479.77 ms. Allocated memory was 204.5 MB in the beginning and 633.3 MB in the end (delta: 428.9 MB). Free memory was 105.5 MB in the beginning and 451.8 MB in the end (delta: -346.3 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. [2020-08-22 19:00:01,152 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 581.21 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 104.0 MB in the beginning and 179.7 MB in the end (delta: -75.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.20 ms. Allocated memory is still 204.5 MB. Free memory was 179.7 MB in the beginning and 176.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1085.48 ms. Allocated memory is still 204.5 MB. Free memory was 176.9 MB in the beginning and 105.5 MB in the end (delta: 71.4 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11479.77 ms. Allocated memory was 204.5 MB in the beginning and 633.3 MB in the end (delta: 428.9 MB). Free memory was 105.5 MB in the beginning and 451.8 MB in the end (delta: -346.3 MB). Peak memory consumption was 82.5 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: 11.3s, OverallIterations: 15, TraceHistogramMax: 2, AutomataDifference: 6.0s, 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, 1.6s 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: 2.7s 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...