/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_1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:57:39,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:57:39,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:57:39,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:57:39,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:57:39,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:57:39,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:57:39,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:57:39,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:57:39,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:57:39,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:57:39,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:57:39,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:57:39,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:57:39,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:57:39,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:57:39,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:57:39,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:57:39,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:57:39,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:57:39,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:57:39,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:57:39,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:57:39,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:57:39,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:57:39,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:57:39,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:57:39,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:57:39,177 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 14:57:39,232 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:57:39,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:57:39,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:57:39,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:57:39,238 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:57:39,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:57:39,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:57:39,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:57:39,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:57:39,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:57:39,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:57:39,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:57:39,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:57:39,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:57:39,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:57:39,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:57:39,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:57:39,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:57:39,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:57:39,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:57:39,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:57:39,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:57:39,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:57:39,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:57:39,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:57:39,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:57:39,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:57:39,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:57:39,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:57:39,245 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 14:57:39,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:57:39,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:57:39,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:57:39,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:57:39,743 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:57:39,744 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1.cil-1.c [2020-09-24 14:57:39,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/799e7c5de/68559231fbdb474eaae2bd4f0d090e97/FLAG7f6bf1504 [2020-09-24 14:57:40,486 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:57:40,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_1.cil-1.c [2020-09-24 14:57:40,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/799e7c5de/68559231fbdb474eaae2bd4f0d090e97/FLAG7f6bf1504 [2020-09-24 14:57:40,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/799e7c5de/68559231fbdb474eaae2bd4f0d090e97 [2020-09-24 14:57:40,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:57:40,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:57:40,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:40,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:57:40,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:57:40,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:40" (1/1) ... [2020-09-24 14:57:40,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac86a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:40, skipping insertion in model container [2020-09-24 14:57:40,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:40" (1/1) ... [2020-09-24 14:57:40,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:57:40,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:57:41,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:41,143 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:57:41,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:41,356 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:57:41,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:41 WrapperNode [2020-09-24 14:57:41,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:41,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:57:41,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:57:41,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:57:41,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:41" (1/1) ... [2020-09-24 14:57:41,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:41" (1/1) ... [2020-09-24 14:57:41,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:41" (1/1) ... [2020-09-24 14:57:41,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:41" (1/1) ... [2020-09-24 14:57:41,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:41" (1/1) ... [2020-09-24 14:57:41,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:41" (1/1) ... [2020-09-24 14:57:41,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:41" (1/1) ... [2020-09-24 14:57:41,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:57:41,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:57:41,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:57:41,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:57:41,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:41" (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 14:57:41,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:57:41,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:57:41,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-24 14:57:41,504 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:57:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:57:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 14:57:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:57:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 14:57:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-24 14:57:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:57:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:57:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:57:41,728 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 14:57:42,378 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-24 14:57:42,378 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-24 14:57:42,397 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:57:42,397 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 14:57:42,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:42 BoogieIcfgContainer [2020-09-24 14:57:42,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:57:42,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:57:42,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:57:42,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:57:42,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:57:40" (1/3) ... [2020-09-24 14:57:42,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313bb737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:42, skipping insertion in model container [2020-09-24 14:57:42,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:41" (2/3) ... [2020-09-24 14:57:42,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313bb737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:42, skipping insertion in model container [2020-09-24 14:57:42,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:42" (3/3) ... [2020-09-24 14:57:42,416 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-1.c [2020-09-24 14:57:42,427 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:57:42,438 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:57:42,460 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:57:42,495 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:57:42,495 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:57:42,495 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:57:42,495 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:57:42,495 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:57:42,496 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:57:42,496 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:57:42,496 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:57:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states. [2020-09-24 14:57:42,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 14:57:42,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:42,553 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 14:57:42,554 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:42,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:42,561 INFO L82 PathProgramCache]: Analyzing trace with hash 42998903, now seen corresponding path program 1 times [2020-09-24 14:57:42,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:42,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092649369] [2020-09-24 14:57:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:43,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:43,211 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 14:57:43,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092649369] [2020-09-24 14:57:43,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:43,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:57:43,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152651971] [2020-09-24 14:57:43,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:57:43,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:43,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:57:43,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:57:43,244 INFO L87 Difference]: Start difference. First operand 416 states. Second operand 6 states. [2020-09-24 14:57:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:43,759 INFO L93 Difference]: Finished difference Result 738 states and 951 transitions. [2020-09-24 14:57:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:57:43,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-24 14:57:43,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:43,797 INFO L225 Difference]: With dead ends: 738 [2020-09-24 14:57:43,797 INFO L226 Difference]: Without dead ends: 413 [2020-09-24 14:57:43,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:57:43,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-09-24 14:57:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 402. [2020-09-24 14:57:43,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-09-24 14:57:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 476 transitions. [2020-09-24 14:57:43,890 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 476 transitions. Word has length 169 [2020-09-24 14:57:43,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:43,891 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 476 transitions. [2020-09-24 14:57:43,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:57:43,892 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 476 transitions. [2020-09-24 14:57:43,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-24 14:57:43,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:43,897 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:43,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:57:43,898 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:43,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:43,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1881331938, now seen corresponding path program 1 times [2020-09-24 14:57:43,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:43,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174344494] [2020-09-24 14:57:43,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,078 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 14:57:44,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174344494] [2020-09-24 14:57:44,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:44,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:44,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336024968] [2020-09-24 14:57:44,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:44,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:44,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:44,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:44,082 INFO L87 Difference]: Start difference. First operand 402 states and 476 transitions. Second operand 3 states. [2020-09-24 14:57:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:44,130 INFO L93 Difference]: Finished difference Result 689 states and 834 transitions. [2020-09-24 14:57:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:44,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-09-24 14:57:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:44,134 INFO L225 Difference]: With dead ends: 689 [2020-09-24 14:57:44,135 INFO L226 Difference]: Without dead ends: 418 [2020-09-24 14:57:44,137 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 14:57:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-09-24 14:57:44,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-09-24 14:57:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-09-24 14:57:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 492 transitions. [2020-09-24 14:57:44,164 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 492 transitions. Word has length 191 [2020-09-24 14:57:44,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:44,164 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 492 transitions. [2020-09-24 14:57:44,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 492 transitions. [2020-09-24 14:57:44,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-24 14:57:44,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:44,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:44,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:57:44,169 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:44,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:44,169 INFO L82 PathProgramCache]: Analyzing trace with hash 572919500, now seen corresponding path program 1 times [2020-09-24 14:57:44,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:44,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424223920] [2020-09-24 14:57:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,341 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 14:57:44,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424223920] [2020-09-24 14:57:44,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:44,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:44,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359492799] [2020-09-24 14:57:44,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:44,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:44,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:44,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:44,351 INFO L87 Difference]: Start difference. First operand 418 states and 492 transitions. Second operand 3 states. [2020-09-24 14:57:44,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:44,646 INFO L93 Difference]: Finished difference Result 724 states and 887 transitions. [2020-09-24 14:57:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:44,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-09-24 14:57:44,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:44,651 INFO L225 Difference]: With dead ends: 724 [2020-09-24 14:57:44,652 INFO L226 Difference]: Without dead ends: 453 [2020-09-24 14:57:44,653 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 14:57:44,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-09-24 14:57:44,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 442. [2020-09-24 14:57:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-09-24 14:57:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 521 transitions. [2020-09-24 14:57:44,675 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 521 transitions. Word has length 192 [2020-09-24 14:57:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:44,676 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 521 transitions. [2020-09-24 14:57:44,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 521 transitions. [2020-09-24 14:57:44,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 14:57:44,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:44,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:44,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:57:44,683 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:44,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:44,684 INFO L82 PathProgramCache]: Analyzing trace with hash -442840212, now seen corresponding path program 1 times [2020-09-24 14:57:44,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:44,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263371408] [2020-09-24 14:57:44,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,846 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 14:57:44,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263371408] [2020-09-24 14:57:44,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:44,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:44,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879671968] [2020-09-24 14:57:44,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:44,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:44,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:44,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:44,852 INFO L87 Difference]: Start difference. First operand 442 states and 521 transitions. Second operand 3 states. [2020-09-24 14:57:44,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:44,939 INFO L93 Difference]: Finished difference Result 1025 states and 1255 transitions. [2020-09-24 14:57:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:44,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2020-09-24 14:57:44,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:44,947 INFO L225 Difference]: With dead ends: 1025 [2020-09-24 14:57:44,947 INFO L226 Difference]: Without dead ends: 730 [2020-09-24 14:57:44,949 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 14:57:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-24 14:57:44,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 730. [2020-09-24 14:57:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2020-09-24 14:57:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 881 transitions. [2020-09-24 14:57:44,986 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 881 transitions. Word has length 199 [2020-09-24 14:57:44,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:44,987 INFO L479 AbstractCegarLoop]: Abstraction has 730 states and 881 transitions. [2020-09-24 14:57:44,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:44,988 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 881 transitions. [2020-09-24 14:57:44,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-24 14:57:44,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:44,996 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:44,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:57:44,996 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:44,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:44,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1902289806, now seen corresponding path program 1 times [2020-09-24 14:57:44,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:45,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867544883] [2020-09-24 14:57:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:45,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 14:57:45,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867544883] [2020-09-24 14:57:45,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:45,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:45,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325141935] [2020-09-24 14:57:45,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:45,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:45,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:45,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:45,191 INFO L87 Difference]: Start difference. First operand 730 states and 881 transitions. Second operand 3 states. [2020-09-24 14:57:45,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:45,576 INFO L93 Difference]: Finished difference Result 1430 states and 1801 transitions. [2020-09-24 14:57:45,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:45,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-09-24 14:57:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:45,584 INFO L225 Difference]: With dead ends: 1430 [2020-09-24 14:57:45,585 INFO L226 Difference]: Without dead ends: 847 [2020-09-24 14:57:45,587 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 14:57:45,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-09-24 14:57:45,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 820. [2020-09-24 14:57:45,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-09-24 14:57:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 981 transitions. [2020-09-24 14:57:45,629 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 981 transitions. Word has length 217 [2020-09-24 14:57:45,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:45,630 INFO L479 AbstractCegarLoop]: Abstraction has 820 states and 981 transitions. [2020-09-24 14:57:45,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:45,631 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 981 transitions. [2020-09-24 14:57:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-24 14:57:45,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:45,639 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:45,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:57:45,640 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:45,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:45,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1839961070, now seen corresponding path program 1 times [2020-09-24 14:57:45,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:45,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24558027] [2020-09-24 14:57:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:45,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:45,890 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 14:57:45,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24558027] [2020-09-24 14:57:45,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:45,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:45,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940606392] [2020-09-24 14:57:45,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:45,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:45,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:45,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:45,892 INFO L87 Difference]: Start difference. First operand 820 states and 981 transitions. Second operand 3 states. [2020-09-24 14:57:46,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:46,174 INFO L93 Difference]: Finished difference Result 1565 states and 1923 transitions. [2020-09-24 14:57:46,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:46,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-09-24 14:57:46,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:46,180 INFO L225 Difference]: With dead ends: 1565 [2020-09-24 14:57:46,180 INFO L226 Difference]: Without dead ends: 892 [2020-09-24 14:57:46,182 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 14:57:46,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-09-24 14:57:46,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 872. [2020-09-24 14:57:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-09-24 14:57:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1043 transitions. [2020-09-24 14:57:46,210 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1043 transitions. Word has length 217 [2020-09-24 14:57:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:46,211 INFO L479 AbstractCegarLoop]: Abstraction has 872 states and 1043 transitions. [2020-09-24 14:57:46,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:46,211 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1043 transitions. [2020-09-24 14:57:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-24 14:57:46,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:46,215 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2020-09-24 14:57:46,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:57:46,216 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:46,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:46,216 INFO L82 PathProgramCache]: Analyzing trace with hash 561231978, now seen corresponding path program 1 times [2020-09-24 14:57:46,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:46,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759783266] [2020-09-24 14:57:46,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:46,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:46,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759783266] [2020-09-24 14:57:46,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:46,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:46,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865760465] [2020-09-24 14:57:46,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:46,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:46,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:46,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:46,315 INFO L87 Difference]: Start difference. First operand 872 states and 1043 transitions. Second operand 3 states. [2020-09-24 14:57:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:46,355 INFO L93 Difference]: Finished difference Result 2236 states and 2701 transitions. [2020-09-24 14:57:46,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:46,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-09-24 14:57:46,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:46,364 INFO L225 Difference]: With dead ends: 2236 [2020-09-24 14:57:46,365 INFO L226 Difference]: Without dead ends: 1511 [2020-09-24 14:57:46,367 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 14:57:46,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2020-09-24 14:57:46,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1509. [2020-09-24 14:57:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2020-09-24 14:57:46,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1798 transitions. [2020-09-24 14:57:46,412 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1798 transitions. Word has length 224 [2020-09-24 14:57:46,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:46,413 INFO L479 AbstractCegarLoop]: Abstraction has 1509 states and 1798 transitions. [2020-09-24 14:57:46,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:46,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1798 transitions. [2020-09-24 14:57:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-24 14:57:46,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:46,419 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:46,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:57:46,420 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:46,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:46,420 INFO L82 PathProgramCache]: Analyzing trace with hash -902826781, now seen corresponding path program 1 times [2020-09-24 14:57:46,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:46,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076321971] [2020-09-24 14:57:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:46,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 14:57:46,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076321971] [2020-09-24 14:57:46,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:46,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:46,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892296892] [2020-09-24 14:57:46,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:46,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:46,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:46,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:46,556 INFO L87 Difference]: Start difference. First operand 1509 states and 1798 transitions. Second operand 3 states. [2020-09-24 14:57:46,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:46,621 INFO L93 Difference]: Finished difference Result 2897 states and 3475 transitions. [2020-09-24 14:57:46,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:46,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-09-24 14:57:46,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:46,630 INFO L225 Difference]: With dead ends: 2897 [2020-09-24 14:57:46,630 INFO L226 Difference]: Without dead ends: 1535 [2020-09-24 14:57:46,634 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 14:57:46,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2020-09-24 14:57:46,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1521. [2020-09-24 14:57:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1521 states. [2020-09-24 14:57:46,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1804 transitions. [2020-09-24 14:57:46,682 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1804 transitions. Word has length 225 [2020-09-24 14:57:46,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:46,683 INFO L479 AbstractCegarLoop]: Abstraction has 1521 states and 1804 transitions. [2020-09-24 14:57:46,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:46,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1804 transitions. [2020-09-24 14:57:46,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-24 14:57:46,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:46,695 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:46,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:57:46,695 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:46,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:46,696 INFO L82 PathProgramCache]: Analyzing trace with hash -182509933, now seen corresponding path program 1 times [2020-09-24 14:57:46,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:46,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516223242] [2020-09-24 14:57:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:46,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:46,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516223242] [2020-09-24 14:57:46,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:46,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:46,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708248827] [2020-09-24 14:57:46,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:46,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:46,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:46,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:46,839 INFO L87 Difference]: Start difference. First operand 1521 states and 1804 transitions. Second operand 3 states. [2020-09-24 14:57:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:46,940 INFO L93 Difference]: Finished difference Result 4275 states and 5108 transitions. [2020-09-24 14:57:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:46,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2020-09-24 14:57:46,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:46,963 INFO L225 Difference]: With dead ends: 4275 [2020-09-24 14:57:46,963 INFO L226 Difference]: Without dead ends: 2901 [2020-09-24 14:57:46,969 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 14:57:46,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-09-24 14:57:47,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2899. [2020-09-24 14:57:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2899 states. [2020-09-24 14:57:47,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 3440 transitions. [2020-09-24 14:57:47,119 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 3440 transitions. Word has length 227 [2020-09-24 14:57:47,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:47,120 INFO L479 AbstractCegarLoop]: Abstraction has 2899 states and 3440 transitions. [2020-09-24 14:57:47,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:47,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 3440 transitions. [2020-09-24 14:57:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-24 14:57:47,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:47,133 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:47,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:57:47,134 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:47,134 INFO L82 PathProgramCache]: Analyzing trace with hash -331944198, now seen corresponding path program 1 times [2020-09-24 14:57:47,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:47,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224322452] [2020-09-24 14:57:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:47,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 14:57:47,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224322452] [2020-09-24 14:57:47,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:47,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:47,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218968236] [2020-09-24 14:57:47,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:47,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:47,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:47,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:47,298 INFO L87 Difference]: Start difference. First operand 2899 states and 3440 transitions. Second operand 3 states. [2020-09-24 14:57:47,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:47,458 INFO L93 Difference]: Finished difference Result 6983 states and 8335 transitions. [2020-09-24 14:57:47,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:47,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2020-09-24 14:57:47,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:47,481 INFO L225 Difference]: With dead ends: 6983 [2020-09-24 14:57:47,481 INFO L226 Difference]: Without dead ends: 4253 [2020-09-24 14:57:47,488 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 14:57:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2020-09-24 14:57:47,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4253. [2020-09-24 14:57:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4253 states. [2020-09-24 14:57:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 5058 transitions. [2020-09-24 14:57:47,618 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 5058 transitions. Word has length 228 [2020-09-24 14:57:47,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:47,619 INFO L479 AbstractCegarLoop]: Abstraction has 4253 states and 5058 transitions. [2020-09-24 14:57:47,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:47,619 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 5058 transitions. [2020-09-24 14:57:47,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 14:57:47,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:47,634 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2020-09-24 14:57:47,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 14:57:47,635 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:47,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:47,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1338604276, now seen corresponding path program 1 times [2020-09-24 14:57:47,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:47,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308882743] [2020-09-24 14:57:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:57:47,679 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:57:47,679 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:57:47,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 14:57:47,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:57:47 BoogieIcfgContainer [2020-09-24 14:57:47,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:57:47,726 INFO L168 Benchmark]: Toolchain (without parser) took 6970.00 ms. Allocated memory was 139.5 MB in the beginning and 346.6 MB in the end (delta: 207.1 MB). Free memory was 102.7 MB in the beginning and 142.6 MB in the end (delta: -39.9 MB). Peak memory consumption was 167.2 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:47,726 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-24 14:57:47,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 596.59 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 178.0 MB in the end (delta: -76.1 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:47,728 INFO L168 Benchmark]: Boogie Preprocessor took 62.82 ms. Allocated memory is still 202.9 MB. Free memory was 178.0 MB in the beginning and 174.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:47,729 INFO L168 Benchmark]: RCFGBuilder took 985.83 ms. Allocated memory is still 202.9 MB. Free memory was 174.7 MB in the beginning and 106.0 MB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:47,730 INFO L168 Benchmark]: TraceAbstraction took 5314.46 ms. Allocated memory was 202.9 MB in the beginning and 346.6 MB in the end (delta: 143.7 MB). Free memory was 106.0 MB in the beginning and 142.6 MB in the end (delta: -36.6 MB). Peak memory consumption was 107.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:47,733 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 596.59 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 178.0 MB in the end (delta: -76.1 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.82 ms. Allocated memory is still 202.9 MB. Free memory was 178.0 MB in the beginning and 174.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 985.83 ms. Allocated memory is still 202.9 MB. Free memory was 174.7 MB in the beginning and 106.0 MB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5314.46 ms. Allocated memory was 202.9 MB in the beginning and 346.6 MB in the end (delta: 143.7 MB). Free memory was 106.0 MB in the beginning and 142.6 MB in the end (delta: -36.6 MB). Peak memory consumption was 107.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 611]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] int s ; [L617] int tmp ; [L621] s = 8464 [L622] 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 = __VERIFIER_nondet_int() ; [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 = __VERIFIER_nondet_int() ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp = __VERIFIER_nondet_long() ; [L45] int cb ; [L46] long num1 ; [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 ; [L55] int tmp___4 ; [L56] int tmp___5 ; [L57] int tmp___6 ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 ; [L61] int tmp___10 ; [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 ; [L73] s__state = initial_state [L74] blastFlag = 0 [L75] Time = tmp [L76] cb = 0 [L77] ret = -1 [L78] skip = 0 [L79] got_new_session = 0 [L80] COND TRUE s__info_callback != 0 [L81] cb = s__info_callback [L87] s__in_handshake ++ [L88] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(s__cert == 0) [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND TRUE s__state == 8464 [L268] s__shutdown = 0 [L269] ret = __VERIFIER_nondet_int() [L270] COND TRUE blastFlag == 0 [L271] blastFlag = 1 [L273] COND FALSE !(ret <= 0) [L276] got_new_session = 1 [L277] s__state = 8496 [L278] s__init_num = 0 [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND TRUE s__state == 8496 [L282] ret = __VERIFIER_nondet_int() [L283] COND TRUE blastFlag == 1 [L284] blastFlag = 2 [L286] COND FALSE !(ret <= 0) [L289] COND TRUE \read(s__hit) [L290] s__state = 8656 [L294] s__init_num = 0 [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND FALSE !(s__state == 8528) [L148] COND FALSE !(s__state == 8529) [L151] COND FALSE !(s__state == 8544) [L154] COND FALSE !(s__state == 8545) [L157] COND FALSE !(s__state == 8560) [L160] COND FALSE !(s__state == 8561) [L163] COND FALSE !(s__state == 8448) [L166] COND FALSE !(s__state == 8576) [L169] COND FALSE !(s__state == 8577) [L172] COND FALSE !(s__state == 8592) [L175] COND FALSE !(s__state == 8593) [L178] COND FALSE !(s__state == 8608) [L181] COND FALSE !(s__state == 8609) [L184] COND FALSE !(s__state == 8640) [L187] COND FALSE !(s__state == 8641) [L190] COND TRUE s__state == 8656 [L488] s__session__cipher = s__s3__tmp__new_cipher [L489] tmp___9 = __VERIFIER_nondet_int() [L490] COND FALSE !(! tmp___9) [L494] ret = __VERIFIER_nondet_int() [L495] COND TRUE blastFlag == 2 [L496] blastFlag = 3 [L498] COND FALSE !(ret <= 0) [L501] s__state = 8672 [L502] s__init_num = 0 [L503] tmp___10 = __VERIFIER_nondet_int() [L504] COND FALSE !(! tmp___10) [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND FALSE !(s__state == 8528) [L148] COND FALSE !(s__state == 8529) [L151] COND FALSE !(s__state == 8544) [L154] COND FALSE !(s__state == 8545) [L157] COND FALSE !(s__state == 8560) [L160] COND FALSE !(s__state == 8561) [L163] COND FALSE !(s__state == 8448) [L166] COND FALSE !(s__state == 8576) [L169] COND FALSE !(s__state == 8577) [L172] COND FALSE !(s__state == 8592) [L175] COND FALSE !(s__state == 8593) [L178] COND FALSE !(s__state == 8608) [L181] COND FALSE !(s__state == 8609) [L184] COND FALSE !(s__state == 8640) [L187] COND FALSE !(s__state == 8641) [L190] COND FALSE !(s__state == 8656) [L193] COND FALSE !(s__state == 8657) [L196] COND TRUE s__state == 8672 [L511] ret = __VERIFIER_nondet_int() [L512] COND FALSE !(blastFlag == 4) [L515] COND TRUE blastFlag == 3 [L611] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 416 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5167 SDtfs, 2473 SDslu, 4213 SDs, 0 SdLazy, 584 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4253occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 87 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 2358 NumberOfCodeBlocks, 2358 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2079 ConstructedInterpolants, 0 QuantifiedInterpolants, 698100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 269/269 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...