/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:57:48,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:57:48,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:57:48,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-24 14:57:48,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:57:48,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:57:48,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:57:48,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:57:48,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:57:48,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:57:48,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:57:48,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:57:48,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:57:48,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:57:48,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:57:48,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:57:48,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:57:48,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:57:48,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:57:48,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:57:48,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 14:57:48,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:57:48,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:57:48,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:57:48,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:57:48,453 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:57:48,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:57:48,454 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:57:48,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:57:48,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:57:48,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:57:48,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:57:48,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:57:48,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:57:48,456 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:57:48,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:57:48,456 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:57:48,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:57:48,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:57:48,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:57:48,457 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:57:48,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:57:48,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:57:48,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:57:48,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:57:48,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:57:48,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:57:48,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:57:48,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:57:48,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:57:48,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:57:48,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:57:48,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:57:48,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:57:48,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:57:48,966 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:57:48,967 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-24 14:57:49,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/204fd86ab/5e6db81df0024ae6984844c1aae9bcdc/FLAG45d4a5c97 [2020-09-24 14:57:49,664 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:57:49,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-24 14:57:49,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/204fd86ab/5e6db81df0024ae6984844c1aae9bcdc/FLAG45d4a5c97 [2020-09-24 14:57:49,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/204fd86ab/5e6db81df0024ae6984844c1aae9bcdc [2020-09-24 14:57:49,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:57:49,961 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:57:49,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:49,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:57:49,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:57:49,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:49" (1/1) ... [2020-09-24 14:57:49,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78523b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:49, skipping insertion in model container [2020-09-24 14:57:49,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:49" (1/1) ... [2020-09-24 14:57:49,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:57:50,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:57:50,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:50,365 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:57:50,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:50,545 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:57:50,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:50 WrapperNode [2020-09-24 14:57:50,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:50,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:57:50,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:57:50,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:57:50,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:50" (1/1) ... [2020-09-24 14:57:50,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:50" (1/1) ... [2020-09-24 14:57:50,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:50" (1/1) ... [2020-09-24 14:57:50,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:50" (1/1) ... [2020-09-24 14:57:50,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:50" (1/1) ... [2020-09-24 14:57:50,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:50" (1/1) ... [2020-09-24 14:57:50,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:50" (1/1) ... [2020-09-24 14:57:50,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:57:50,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:57:50,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:57:50,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:57:50,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 14:57:50,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:57:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:57:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-24 14:57:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:57:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:57:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 14:57:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:57:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 14:57:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-24 14:57:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:57:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:57:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:57:50,947 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 14:57:51,568 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-24 14:57:51,569 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-24 14:57:51,586 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:57:51,586 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 14:57:51,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:51 BoogieIcfgContainer [2020-09-24 14:57:51,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:57:51,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:57:51,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:57:51,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:57:51,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:57:49" (1/3) ... [2020-09-24 14:57:51,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ae4e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:51, skipping insertion in model container [2020-09-24 14:57:51,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:50" (2/3) ... [2020-09-24 14:57:51,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ae4e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:51, skipping insertion in model container [2020-09-24 14:57:51,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:51" (3/3) ... [2020-09-24 14:57:51,604 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2020-09-24 14:57:51,615 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:57:51,627 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:57:51,648 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:57:51,680 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:57:51,680 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:57:51,680 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:57:51,680 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:57:51,681 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:57:51,681 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:57:51,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:57:51,681 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:57:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states. [2020-09-24 14:57:51,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 14:57:51,729 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:51,731 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] [2020-09-24 14:57:51,731 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:51,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:51,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1268045474, now seen corresponding path program 1 times [2020-09-24 14:57:51,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:51,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643028284] [2020-09-24 14:57:51,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:52,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:52,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643028284] [2020-09-24 14:57:52,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:52,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:57:52,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551878966] [2020-09-24 14:57:52,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:57:52,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:52,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:57:52,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:57:52,254 INFO L87 Difference]: Start difference. First operand 426 states. Second operand 6 states. [2020-09-24 14:57:52,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:52,712 INFO L93 Difference]: Finished difference Result 802 states and 1073 transitions. [2020-09-24 14:57:52,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:57:52,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-24 14:57:52,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:52,737 INFO L225 Difference]: With dead ends: 802 [2020-09-24 14:57:52,737 INFO L226 Difference]: Without dead ends: 459 [2020-09-24 14:57:52,744 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 [2020-09-24 14:57:52,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-09-24 14:57:52,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 444. [2020-09-24 14:57:52,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-09-24 14:57:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 535 transitions. [2020-09-24 14:57:52,840 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 535 transitions. Word has length 158 [2020-09-24 14:57:52,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:52,843 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 535 transitions. [2020-09-24 14:57:52,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:57:52,844 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 535 transitions. [2020-09-24 14:57:52,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-24 14:57:52,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:52,853 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] [2020-09-24 14:57:52,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:57:52,854 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:52,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:52,854 INFO L82 PathProgramCache]: Analyzing trace with hash 796395907, now seen corresponding path program 1 times [2020-09-24 14:57:52,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:52,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071002296] [2020-09-24 14:57:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:53,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:53,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071002296] [2020-09-24 14:57:53,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:53,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:57:53,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533254923] [2020-09-24 14:57:53,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:57:53,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:53,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:57:53,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:57:53,189 INFO L87 Difference]: Start difference. First operand 444 states and 535 transitions. Second operand 6 states. [2020-09-24 14:57:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:53,539 INFO L93 Difference]: Finished difference Result 839 states and 1069 transitions. [2020-09-24 14:57:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:57:53,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-24 14:57:53,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:53,545 INFO L225 Difference]: With dead ends: 839 [2020-09-24 14:57:53,545 INFO L226 Difference]: Without dead ends: 525 [2020-09-24 14:57:53,547 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 [2020-09-24 14:57:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-09-24 14:57:53,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 507. [2020-09-24 14:57:53,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-09-24 14:57:53,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 634 transitions. [2020-09-24 14:57:53,576 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 634 transitions. Word has length 166 [2020-09-24 14:57:53,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:53,577 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 634 transitions. [2020-09-24 14:57:53,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:57:53,577 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 634 transitions. [2020-09-24 14:57:53,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 14:57:53,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:53,580 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] [2020-09-24 14:57:53,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:57:53,580 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:53,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:53,581 INFO L82 PathProgramCache]: Analyzing trace with hash 467731815, now seen corresponding path program 1 times [2020-09-24 14:57:53,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:53,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314014074] [2020-09-24 14:57:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:53,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:53,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314014074] [2020-09-24 14:57:53,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:53,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:53,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342873951] [2020-09-24 14:57:53,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:53,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:53,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:53,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:53,710 INFO L87 Difference]: Start difference. First operand 507 states and 634 transitions. Second operand 3 states. [2020-09-24 14:57:53,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:53,772 INFO L93 Difference]: Finished difference Result 887 states and 1138 transitions. [2020-09-24 14:57:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:53,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-09-24 14:57:53,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:53,777 INFO L225 Difference]: With dead ends: 887 [2020-09-24 14:57:53,777 INFO L226 Difference]: Without dead ends: 523 [2020-09-24 14:57:53,778 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 [2020-09-24 14:57:53,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-09-24 14:57:53,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2020-09-24 14:57:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-09-24 14:57:53,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 650 transitions. [2020-09-24 14:57:53,799 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 650 transitions. Word has length 167 [2020-09-24 14:57:53,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:53,800 INFO L479 AbstractCegarLoop]: Abstraction has 523 states and 650 transitions. [2020-09-24 14:57:53,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:53,800 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 650 transitions. [2020-09-24 14:57:53,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 14:57:53,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:53,803 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] [2020-09-24 14:57:53,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:57:53,803 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:53,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:53,804 INFO L82 PathProgramCache]: Analyzing trace with hash 611444181, now seen corresponding path program 1 times [2020-09-24 14:57:53,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:53,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839125587] [2020-09-24 14:57:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:53,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:53,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839125587] [2020-09-24 14:57:53,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:53,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:53,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387929110] [2020-09-24 14:57:53,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:53,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:53,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:53,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:53,885 INFO L87 Difference]: Start difference. First operand 523 states and 650 transitions. Second operand 3 states. [2020-09-24 14:57:53,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:53,916 INFO L93 Difference]: Finished difference Result 1256 states and 1619 transitions. [2020-09-24 14:57:53,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:53,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-09-24 14:57:53,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:53,922 INFO L225 Difference]: With dead ends: 1256 [2020-09-24 14:57:53,922 INFO L226 Difference]: Without dead ends: 892 [2020-09-24 14:57:53,924 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 [2020-09-24 14:57:53,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-09-24 14:57:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 890. [2020-09-24 14:57:53,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-24 14:57:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1127 transitions. [2020-09-24 14:57:53,983 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1127 transitions. Word has length 168 [2020-09-24 14:57:53,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:53,984 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1127 transitions. [2020-09-24 14:57:53,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:53,984 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1127 transitions. [2020-09-24 14:57:53,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 14:57:53,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:53,987 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] [2020-09-24 14:57:53,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:57:53,988 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:53,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:53,988 INFO L82 PathProgramCache]: Analyzing trace with hash 283864666, now seen corresponding path program 1 times [2020-09-24 14:57:53,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:53,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182711621] [2020-09-24 14:57:53,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:54,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182711621] [2020-09-24 14:57:54,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:54,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:54,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183383628] [2020-09-24 14:57:54,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:54,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:54,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:54,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,068 INFO L87 Difference]: Start difference. First operand 890 states and 1127 transitions. Second operand 3 states. [2020-09-24 14:57:54,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:54,113 INFO L93 Difference]: Finished difference Result 2331 states and 3030 transitions. [2020-09-24 14:57:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:54,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-09-24 14:57:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:54,123 INFO L225 Difference]: With dead ends: 2331 [2020-09-24 14:57:54,123 INFO L226 Difference]: Without dead ends: 1617 [2020-09-24 14:57:54,125 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 [2020-09-24 14:57:54,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2020-09-24 14:57:54,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1265. [2020-09-24 14:57:54,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1265 states. [2020-09-24 14:57:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1618 transitions. [2020-09-24 14:57:54,181 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1618 transitions. Word has length 169 [2020-09-24 14:57:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:54,182 INFO L479 AbstractCegarLoop]: Abstraction has 1265 states and 1618 transitions. [2020-09-24 14:57:54,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:54,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1618 transitions. [2020-09-24 14:57:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 14:57:54,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:54,187 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] [2020-09-24 14:57:54,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:57:54,188 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:54,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:54,188 INFO L82 PathProgramCache]: Analyzing trace with hash 261232412, now seen corresponding path program 1 times [2020-09-24 14:57:54,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:54,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443931889] [2020-09-24 14:57:54,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:54,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443931889] [2020-09-24 14:57:54,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:54,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:57:54,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675893289] [2020-09-24 14:57:54,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:57:54,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:54,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:57:54,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:57:54,305 INFO L87 Difference]: Start difference. First operand 1265 states and 1618 transitions. Second operand 4 states. [2020-09-24 14:57:54,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:54,651 INFO L93 Difference]: Finished difference Result 1462 states and 1856 transitions. [2020-09-24 14:57:54,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 14:57:54,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-09-24 14:57:54,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:54,661 INFO L225 Difference]: With dead ends: 1462 [2020-09-24 14:57:54,661 INFO L226 Difference]: Without dead ends: 1460 [2020-09-24 14:57:54,662 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 [2020-09-24 14:57:54,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-09-24 14:57:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1292. [2020-09-24 14:57:54,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-09-24 14:57:54,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1654 transitions. [2020-09-24 14:57:54,728 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1654 transitions. Word has length 169 [2020-09-24 14:57:54,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:54,729 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1654 transitions. [2020-09-24 14:57:54,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:57:54,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1654 transitions. [2020-09-24 14:57:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 14:57:54,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:54,735 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] [2020-09-24 14:57:54,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:57:54,736 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:54,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:54,737 INFO L82 PathProgramCache]: Analyzing trace with hash 780905830, now seen corresponding path program 1 times [2020-09-24 14:57:54,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:54,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414159239] [2020-09-24 14:57:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:54,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414159239] [2020-09-24 14:57:54,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:54,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:54,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129964969] [2020-09-24 14:57:54,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:54,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:54,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:54,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,855 INFO L87 Difference]: Start difference. First operand 1292 states and 1654 transitions. Second operand 3 states. [2020-09-24 14:57:54,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:54,910 INFO L93 Difference]: Finished difference Result 2391 states and 3111 transitions. [2020-09-24 14:57:54,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:54,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-09-24 14:57:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:54,918 INFO L225 Difference]: With dead ends: 2391 [2020-09-24 14:57:54,918 INFO L226 Difference]: Without dead ends: 1292 [2020-09-24 14:57:54,921 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 [2020-09-24 14:57:54,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2020-09-24 14:57:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2020-09-24 14:57:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-09-24 14:57:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1640 transitions. [2020-09-24 14:57:54,985 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1640 transitions. Word has length 182 [2020-09-24 14:57:54,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:54,986 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1640 transitions. [2020-09-24 14:57:54,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:54,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1640 transitions. [2020-09-24 14:57:54,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-24 14:57:54,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:54,992 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] [2020-09-24 14:57:54,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:57:54,993 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:54,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:54,994 INFO L82 PathProgramCache]: Analyzing trace with hash -2039964467, now seen corresponding path program 1 times [2020-09-24 14:57:54,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:54,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527784821] [2020-09-24 14:57:54,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527784821] [2020-09-24 14:57:55,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875894680] [2020-09-24 14:57:55,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,168 INFO L87 Difference]: Start difference. First operand 1292 states and 1640 transitions. Second operand 3 states. [2020-09-24 14:57:55,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,245 INFO L93 Difference]: Finished difference Result 2412 states and 3107 transitions. [2020-09-24 14:57:55,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2020-09-24 14:57:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,256 INFO L225 Difference]: With dead ends: 2412 [2020-09-24 14:57:55,257 INFO L226 Difference]: Without dead ends: 1313 [2020-09-24 14:57:55,260 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 [2020-09-24 14:57:55,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-09-24 14:57:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1310. [2020-09-24 14:57:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-09-24 14:57:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1647 transitions. [2020-09-24 14:57:55,326 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1647 transitions. Word has length 183 [2020-09-24 14:57:55,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,327 INFO L479 AbstractCegarLoop]: Abstraction has 1310 states and 1647 transitions. [2020-09-24 14:57:55,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1647 transitions. [2020-09-24 14:57:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 14:57:55,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,334 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] [2020-09-24 14:57:55,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:57:55,334 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,335 INFO L82 PathProgramCache]: Analyzing trace with hash -293442268, now seen corresponding path program 1 times [2020-09-24 14:57:55,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350276896] [2020-09-24 14:57:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350276896] [2020-09-24 14:57:55,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050930015] [2020-09-24 14:57:55,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,443 INFO L87 Difference]: Start difference. First operand 1310 states and 1647 transitions. Second operand 3 states. [2020-09-24 14:57:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,786 INFO L93 Difference]: Finished difference Result 2612 states and 3392 transitions. [2020-09-24 14:57:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-24 14:57:55,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,798 INFO L225 Difference]: With dead ends: 2612 [2020-09-24 14:57:55,798 INFO L226 Difference]: Without dead ends: 1429 [2020-09-24 14:57:55,802 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 [2020-09-24 14:57:55,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2020-09-24 14:57:55,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1390. [2020-09-24 14:57:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2020-09-24 14:57:55,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1757 transitions. [2020-09-24 14:57:55,874 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1757 transitions. Word has length 187 [2020-09-24 14:57:55,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,874 INFO L479 AbstractCegarLoop]: Abstraction has 1390 states and 1757 transitions. [2020-09-24 14:57:55,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1757 transitions. [2020-09-24 14:57:55,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-24 14:57:55,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,878 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] [2020-09-24 14:57:55,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:57:55,878 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1739161684, now seen corresponding path program 1 times [2020-09-24 14:57:55,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286088487] [2020-09-24 14:57:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:56,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286088487] [2020-09-24 14:57:56,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:56,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:56,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446754260] [2020-09-24 14:57:56,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:56,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:56,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:56,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,008 INFO L87 Difference]: Start difference. First operand 1390 states and 1757 transitions. Second operand 3 states. [2020-09-24 14:57:56,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:56,282 INFO L93 Difference]: Finished difference Result 2715 states and 3508 transitions. [2020-09-24 14:57:56,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:56,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2020-09-24 14:57:56,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:56,295 INFO L225 Difference]: With dead ends: 2715 [2020-09-24 14:57:56,295 INFO L226 Difference]: Without dead ends: 1518 [2020-09-24 14:57:56,299 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 [2020-09-24 14:57:56,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2020-09-24 14:57:56,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1467. [2020-09-24 14:57:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1467 states. [2020-09-24 14:57:56,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 1829 transitions. [2020-09-24 14:57:56,384 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 1829 transitions. Word has length 189 [2020-09-24 14:57:56,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:56,385 INFO L479 AbstractCegarLoop]: Abstraction has 1467 states and 1829 transitions. [2020-09-24 14:57:56,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 1829 transitions. [2020-09-24 14:57:56,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 14:57:56,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:56,389 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] [2020-09-24 14:57:56,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 14:57:56,389 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:56,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:56,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1187027627, now seen corresponding path program 1 times [2020-09-24 14:57:56,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:56,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856263790] [2020-09-24 14:57:56,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 14:57:56,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856263790] [2020-09-24 14:57:56,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:56,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:57:56,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432849800] [2020-09-24 14:57:56,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:57:56,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:56,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:57:56,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:57:56,511 INFO L87 Difference]: Start difference. First operand 1467 states and 1829 transitions. Second operand 4 states. [2020-09-24 14:57:56,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:56,767 INFO L93 Difference]: Finished difference Result 1670 states and 2059 transitions. [2020-09-24 14:57:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 14:57:56,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 193 [2020-09-24 14:57:56,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:56,776 INFO L225 Difference]: With dead ends: 1670 [2020-09-24 14:57:56,776 INFO L226 Difference]: Without dead ends: 1668 [2020-09-24 14:57:56,777 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 [2020-09-24 14:57:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-09-24 14:57:56,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1457. [2020-09-24 14:57:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-09-24 14:57:56,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1817 transitions. [2020-09-24 14:57:56,838 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1817 transitions. Word has length 193 [2020-09-24 14:57:56,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:56,838 INFO L479 AbstractCegarLoop]: Abstraction has 1457 states and 1817 transitions. [2020-09-24 14:57:56,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:57:56,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1817 transitions. [2020-09-24 14:57:56,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 14:57:56,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:56,843 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] [2020-09-24 14:57:56,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 14:57:56,843 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:56,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:56,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1575854146, now seen corresponding path program 1 times [2020-09-24 14:57:56,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:56,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219433988] [2020-09-24 14:57:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 14:57:56,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219433988] [2020-09-24 14:57:56,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:56,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:57:56,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517297830] [2020-09-24 14:57:57,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:57:57,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:57,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:57:57,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:57:57,001 INFO L87 Difference]: Start difference. First operand 1457 states and 1817 transitions. Second operand 4 states. [2020-09-24 14:57:57,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:57,279 INFO L93 Difference]: Finished difference Result 1625 states and 2006 transitions. [2020-09-24 14:57:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 14:57:57,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-09-24 14:57:57,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:57,289 INFO L225 Difference]: With dead ends: 1625 [2020-09-24 14:57:57,289 INFO L226 Difference]: Without dead ends: 1623 [2020-09-24 14:57:57,290 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 [2020-09-24 14:57:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2020-09-24 14:57:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1452. [2020-09-24 14:57:57,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-09-24 14:57:57,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1811 transitions. [2020-09-24 14:57:57,351 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1811 transitions. Word has length 199 [2020-09-24 14:57:57,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:57,352 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1811 transitions. [2020-09-24 14:57:57,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:57:57,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1811 transitions. [2020-09-24 14:57:57,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 14:57:57,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:57,356 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] [2020-09-24 14:57:57,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 14:57:57,357 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:57,357 INFO L82 PathProgramCache]: Analyzing trace with hash -455131385, now seen corresponding path program 1 times [2020-09-24 14:57:57,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:57,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048946727] [2020-09-24 14:57:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:57,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048946727] [2020-09-24 14:57:57,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:57,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:57,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894523427] [2020-09-24 14:57:57,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:57,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:57,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:57,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:57,442 INFO L87 Difference]: Start difference. First operand 1452 states and 1811 transitions. Second operand 3 states. [2020-09-24 14:57:57,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:57,575 INFO L93 Difference]: Finished difference Result 3925 states and 4991 transitions. [2020-09-24 14:57:57,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:57,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-09-24 14:57:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:57,589 INFO L225 Difference]: With dead ends: 3925 [2020-09-24 14:57:57,589 INFO L226 Difference]: Without dead ends: 2666 [2020-09-24 14:57:57,592 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 [2020-09-24 14:57:57,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2020-09-24 14:57:57,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2664. [2020-09-24 14:57:57,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2020-09-24 14:57:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3343 transitions. [2020-09-24 14:57:57,699 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3343 transitions. Word has length 200 [2020-09-24 14:57:57,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:57,699 INFO L479 AbstractCegarLoop]: Abstraction has 2664 states and 3343 transitions. [2020-09-24 14:57:57,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:57,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3343 transitions. [2020-09-24 14:57:57,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-24 14:57:57,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:57,705 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] [2020-09-24 14:57:57,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 14:57:57,705 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:57,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:57,706 INFO L82 PathProgramCache]: Analyzing trace with hash 595350838, now seen corresponding path program 1 times [2020-09-24 14:57:57,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:57,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016537886] [2020-09-24 14:57:57,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:57,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016537886] [2020-09-24 14:57:57,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:57,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:57:57,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910786583] [2020-09-24 14:57:57,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:57:57,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:57,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:57:57,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:57:57,858 INFO L87 Difference]: Start difference. First operand 2664 states and 3343 transitions. Second operand 4 states. [2020-09-24 14:57:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:58,070 INFO L93 Difference]: Finished difference Result 8995 states and 11372 transitions. [2020-09-24 14:57:58,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 14:57:58,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-09-24 14:57:58,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:58,104 INFO L225 Difference]: With dead ends: 8995 [2020-09-24 14:57:58,104 INFO L226 Difference]: Without dead ends: 6524 [2020-09-24 14:57:58,111 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 [2020-09-24 14:57:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6524 states. [2020-09-24 14:57:58,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6524 to 4051. [2020-09-24 14:57:58,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4051 states. [2020-09-24 14:57:58,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4051 states to 4051 states and 5031 transitions. [2020-09-24 14:57:58,329 INFO L78 Accepts]: Start accepts. Automaton has 4051 states and 5031 transitions. Word has length 201 [2020-09-24 14:57:58,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:58,330 INFO L479 AbstractCegarLoop]: Abstraction has 4051 states and 5031 transitions. [2020-09-24 14:57:58,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:57:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4051 states and 5031 transitions. [2020-09-24 14:57:58,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-24 14:57:58,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:58,336 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] [2020-09-24 14:57:58,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 14:57:58,337 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:58,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:58,337 INFO L82 PathProgramCache]: Analyzing trace with hash -690870181, now seen corresponding path program 1 times [2020-09-24 14:57:58,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:58,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594611156] [2020-09-24 14:57:58,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:57:58,377 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:57:58,377 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:57:58,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 14:57:58,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:57:58 BoogieIcfgContainer [2020-09-24 14:57:58,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:57:58,421 INFO L168 Benchmark]: Toolchain (without parser) took 8462.99 ms. Allocated memory was 148.9 MB in the beginning and 393.7 MB in the end (delta: 244.8 MB). Free memory was 104.4 MB in the beginning and 176.6 MB in the end (delta: -72.1 MB). Peak memory consumption was 172.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:58,421 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 14:57:58,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.77 ms. Allocated memory was 148.9 MB in the beginning and 205.0 MB in the end (delta: 56.1 MB). Free memory was 103.8 MB in the beginning and 179.8 MB in the end (delta: -76.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:58,423 INFO L168 Benchmark]: Boogie Preprocessor took 80.35 ms. Allocated memory is still 205.0 MB. Free memory was 179.8 MB in the beginning and 177.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:58,424 INFO L168 Benchmark]: RCFGBuilder took 961.00 ms. Allocated memory is still 205.0 MB. Free memory was 177.2 MB in the beginning and 106.2 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:58,424 INFO L168 Benchmark]: TraceAbstraction took 6821.41 ms. Allocated memory was 205.0 MB in the beginning and 393.7 MB in the end (delta: 188.7 MB). Free memory was 105.6 MB in the beginning and 176.6 MB in the end (delta: -71.0 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:58,428 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 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 581.77 ms. Allocated memory was 148.9 MB in the beginning and 205.0 MB in the end (delta: 56.1 MB). Free memory was 103.8 MB in the beginning and 179.8 MB in the end (delta: -76.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.35 ms. Allocated memory is still 205.0 MB. Free memory was 179.8 MB in the beginning and 177.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 961.00 ms. Allocated memory is still 205.0 MB. Free memory was 177.2 MB in the beginning and 106.2 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6821.41 ms. Allocated memory was 205.0 MB in the beginning and 393.7 MB in the end (delta: 188.7 MB). Free memory was 105.6 MB in the beginning and 176.6 MB in the end (delta: -71.0 MB). Peak memory consumption was 117.7 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: 6.7s, OverallIterations: 15, TraceHistogramMax: 2, AutomataDifference: 3.1s, 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, 1.5s 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: 1.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 3505 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 2732 NumberOfCodeBlocks, 2732 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2517 ConstructedInterpolants, 0 QuantifiedInterpolants, 718761 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 112/112 InterpolantCoveringCapability, 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...