/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_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:57:49,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:57:49,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:57:49,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-24 14:57:49,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:57:49,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:57:49,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:57:49,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:57:49,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:57:49,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:57:49,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:57:49,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:57:49,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:57:49,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:57:49,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:57:49,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:57:49,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:57:49,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:57:49,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:57:49,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:57:49,788 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 14:57:49,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:57:49,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:57:49,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:57:49,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:57:49,847 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:57:49,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:57:49,848 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:57:49,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:57:49,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:57:49,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:57:49,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:57:49,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:57:49,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:57:49,851 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:57:49,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:57:49,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:57:49,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:57:49,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:57:49,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:57:49,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:57:49,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:57:49,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:57:49,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:57:49,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:57:49,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:57:49,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:57:49,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:57:49,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:57:49,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:57:49,854 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 14:57:50,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:57:50,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:57:50,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:57:50,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:57:50,327 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:57:50,328 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-09-24 14:57:50,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1228021a1/59e14c82f4da403aa746d6a6e0d30944/FLAGb81c8e1fd [2020-09-24 14:57:51,009 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:57:51,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_2.cil-2.c [2020-09-24 14:57:51,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1228021a1/59e14c82f4da403aa746d6a6e0d30944/FLAGb81c8e1fd [2020-09-24 14:57:51,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1228021a1/59e14c82f4da403aa746d6a6e0d30944 [2020-09-24 14:57:51,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:57:51,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:57:51,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:51,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:57:51,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:57:51,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:51" (1/1) ... [2020-09-24 14:57:51,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6017e0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:51, skipping insertion in model container [2020-09-24 14:57:51,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:51" (1/1) ... [2020-09-24 14:57:51,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:57:51,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:57:51,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:51,747 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:57:51,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:51,946 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:57:51,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:51 WrapperNode [2020-09-24 14:57:51,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:51,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:57:51,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:57:51,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:57:51,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:51" (1/1) ... [2020-09-24 14:57:51,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:51" (1/1) ... [2020-09-24 14:57:51,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:51" (1/1) ... [2020-09-24 14:57:51,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:51" (1/1) ... [2020-09-24 14:57:51,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:51" (1/1) ... [2020-09-24 14:57:52,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:51" (1/1) ... [2020-09-24 14:57:52,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:51" (1/1) ... [2020-09-24 14:57:52,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:57:52,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:57:52,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:57:52,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:57:52,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:51" (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 14:57:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:57:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:57:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-24 14:57:52,096 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:57:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:57:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 14:57:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:57:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 14:57:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-24 14:57:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:57:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:57:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:57:52,343 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 14:57:53,002 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-24 14:57:53,003 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-24 14:57:53,031 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:57:53,032 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 14:57:53,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:53 BoogieIcfgContainer [2020-09-24 14:57:53,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:57:53,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:57:53,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:57:53,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:57:53,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:57:51" (1/3) ... [2020-09-24 14:57:53,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e49cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:53, skipping insertion in model container [2020-09-24 14:57:53,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:51" (2/3) ... [2020-09-24 14:57:53,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e49cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:53, skipping insertion in model container [2020-09-24 14:57:53,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:53" (3/3) ... [2020-09-24 14:57:53,051 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-2.c [2020-09-24 14:57:53,061 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:57:53,072 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:57:53,092 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:57:53,125 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:57:53,125 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:57:53,125 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:57:53,126 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:57:53,126 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:57:53,126 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:57:53,126 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:57:53,126 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:57:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states. [2020-09-24 14:57:53,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 14:57:53,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:53,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:53,183 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:53,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:53,192 INFO L82 PathProgramCache]: Analyzing trace with hash -51904500, now seen corresponding path program 1 times [2020-09-24 14:57:53,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:53,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574040499] [2020-09-24 14:57:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:53,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:53,797 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 14:57:53,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574040499] [2020-09-24 14:57:53,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:53,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:57:53,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051886855] [2020-09-24 14:57:53,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:57:53,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:53,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:57:53,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:57:53,832 INFO L87 Difference]: Start difference. First operand 411 states. Second operand 6 states. [2020-09-24 14:57:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:54,297 INFO L93 Difference]: Finished difference Result 765 states and 1012 transitions. [2020-09-24 14:57:54,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:57:54,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-09-24 14:57:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:54,323 INFO L225 Difference]: With dead ends: 765 [2020-09-24 14:57:54,323 INFO L226 Difference]: Without dead ends: 438 [2020-09-24 14:57:54,331 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 14:57:54,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-09-24 14:57:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 425. [2020-09-24 14:57:54,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-09-24 14:57:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 503 transitions. [2020-09-24 14:57:54,451 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 503 transitions. Word has length 181 [2020-09-24 14:57:54,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:54,452 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 503 transitions. [2020-09-24 14:57:54,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:57:54,453 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 503 transitions. [2020-09-24 14:57:54,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-24 14:57:54,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:54,458 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, 1, 1, 1, 1] [2020-09-24 14:57:54,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:57:54,458 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:54,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:54,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1773900517, now seen corresponding path program 1 times [2020-09-24 14:57:54,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:54,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291005384] [2020-09-24 14:57:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,620 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 14:57:54,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291005384] [2020-09-24 14:57:54,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:54,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:54,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168060819] [2020-09-24 14:57:54,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:54,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:54,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:54,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,625 INFO L87 Difference]: Start difference. First operand 425 states and 503 transitions. Second operand 3 states. [2020-09-24 14:57:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:54,688 INFO L93 Difference]: Finished difference Result 977 states and 1204 transitions. [2020-09-24 14:57:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:54,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2020-09-24 14:57:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:54,694 INFO L225 Difference]: With dead ends: 977 [2020-09-24 14:57:54,695 INFO L226 Difference]: Without dead ends: 696 [2020-09-24 14:57:54,697 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 14:57:54,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-24 14:57:54,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-24 14:57:54,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-24 14:57:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 844 transitions. [2020-09-24 14:57:54,734 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 844 transitions. Word has length 203 [2020-09-24 14:57:54,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:54,736 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 844 transitions. [2020-09-24 14:57:54,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 844 transitions. [2020-09-24 14:57:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-24 14:57:54,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:54,745 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, 1, 1, 1, 1, 1] [2020-09-24 14:57:54,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:57:54,748 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:54,749 INFO L82 PathProgramCache]: Analyzing trace with hash -144089876, now seen corresponding path program 1 times [2020-09-24 14:57:54,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:54,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302859716] [2020-09-24 14:57:54,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,956 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 14:57:54,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302859716] [2020-09-24 14:57:54,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:54,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:54,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746866881] [2020-09-24 14:57:54,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:54,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:54,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:54,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,960 INFO L87 Difference]: Start difference. First operand 696 states and 844 transitions. Second operand 3 states. [2020-09-24 14:57:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,226 INFO L93 Difference]: Finished difference Result 1023 states and 1266 transitions. [2020-09-24 14:57:55,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-09-24 14:57:55,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,234 INFO L225 Difference]: With dead ends: 1023 [2020-09-24 14:57:55,235 INFO L226 Difference]: Without dead ends: 742 [2020-09-24 14:57:55,236 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 14:57:55,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-09-24 14:57:55,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 720. [2020-09-24 14:57:55,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-09-24 14:57:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 873 transitions. [2020-09-24 14:57:55,270 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 873 transitions. Word has length 204 [2020-09-24 14:57:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,271 INFO L479 AbstractCegarLoop]: Abstraction has 720 states and 873 transitions. [2020-09-24 14:57:55,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,271 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 873 transitions. [2020-09-24 14:57:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-24 14:57:55,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:57:55,280 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,281 INFO L82 PathProgramCache]: Analyzing trace with hash -764991549, now seen corresponding path program 1 times [2020-09-24 14:57:55,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612108885] [2020-09-24 14:57:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,524 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 14:57:55,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612108885] [2020-09-24 14:57:55,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256304520] [2020-09-24 14:57:55,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,530 INFO L87 Difference]: Start difference. First operand 720 states and 873 transitions. Second operand 3 states. [2020-09-24 14:57:55,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,605 INFO L93 Difference]: Finished difference Result 1867 states and 2315 transitions. [2020-09-24 14:57:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-09-24 14:57:55,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,616 INFO L225 Difference]: With dead ends: 1867 [2020-09-24 14:57:55,616 INFO L226 Difference]: Without dead ends: 1291 [2020-09-24 14:57:55,619 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 14:57:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-09-24 14:57:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1289. [2020-09-24 14:57:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1289 states. [2020-09-24 14:57:55,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1580 transitions. [2020-09-24 14:57:55,677 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1580 transitions. Word has length 211 [2020-09-24 14:57:55,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,678 INFO L479 AbstractCegarLoop]: Abstraction has 1289 states and 1580 transitions. [2020-09-24 14:57:55,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1580 transitions. [2020-09-24 14:57:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-24 14:57:55,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:57:55,687 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1086176952, now seen corresponding path program 1 times [2020-09-24 14:57:55,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055665502] [2020-09-24 14:57:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,908 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 14:57:55,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055665502] [2020-09-24 14:57:55,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431984378] [2020-09-24 14:57:55,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,912 INFO L87 Difference]: Start difference. First operand 1289 states and 1580 transitions. Second operand 3 states. [2020-09-24 14:57:56,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:56,016 INFO L93 Difference]: Finished difference Result 2483 states and 3077 transitions. [2020-09-24 14:57:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:56,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-09-24 14:57:56,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:56,032 INFO L225 Difference]: With dead ends: 2483 [2020-09-24 14:57:56,032 INFO L226 Difference]: Without dead ends: 1881 [2020-09-24 14:57:56,035 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 14:57:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-09-24 14:57:56,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1881. [2020-09-24 14:57:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2020-09-24 14:57:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2318 transitions. [2020-09-24 14:57:56,120 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2318 transitions. Word has length 211 [2020-09-24 14:57:56,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:56,121 INFO L479 AbstractCegarLoop]: Abstraction has 1881 states and 2318 transitions. [2020-09-24 14:57:56,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:56,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2318 transitions. [2020-09-24 14:57:56,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 14:57:56,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:56,135 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, 1, 1, 1, 1] [2020-09-24 14:57:56,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:57:56,136 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:56,137 INFO L82 PathProgramCache]: Analyzing trace with hash 955931285, now seen corresponding path program 1 times [2020-09-24 14:57:56,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:56,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710907757] [2020-09-24 14:57:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,409 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 14:57:56,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710907757] [2020-09-24 14:57:56,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:56,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:56,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011194578] [2020-09-24 14:57:56,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:56,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:56,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:56,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,419 INFO L87 Difference]: Start difference. First operand 1881 states and 2318 transitions. Second operand 3 states. [2020-09-24 14:57:56,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:56,747 INFO L93 Difference]: Finished difference Result 3929 states and 5009 transitions. [2020-09-24 14:57:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:56,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-09-24 14:57:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:56,761 INFO L225 Difference]: With dead ends: 3929 [2020-09-24 14:57:56,761 INFO L226 Difference]: Without dead ends: 2198 [2020-09-24 14:57:56,765 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 14:57:56,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2020-09-24 14:57:56,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 2142. [2020-09-24 14:57:56,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2020-09-24 14:57:56,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2603 transitions. [2020-09-24 14:57:56,855 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2603 transitions. Word has length 229 [2020-09-24 14:57:56,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:56,855 INFO L479 AbstractCegarLoop]: Abstraction has 2142 states and 2603 transitions. [2020-09-24 14:57:56,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:56,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2603 transitions. [2020-09-24 14:57:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 14:57:56,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:56,863 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, 1, 1, 1, 1] [2020-09-24 14:57:56,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:57:56,864 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:56,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:56,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1369562677, now seen corresponding path program 1 times [2020-09-24 14:57:56,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:56,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156739750] [2020-09-24 14:57:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,001 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 14:57:57,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156739750] [2020-09-24 14:57:57,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:57,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:57,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469183080] [2020-09-24 14:57:57,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:57,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:57,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:57,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:57,004 INFO L87 Difference]: Start difference. First operand 2142 states and 2603 transitions. Second operand 3 states. [2020-09-24 14:57:57,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:57,277 INFO L93 Difference]: Finished difference Result 4341 states and 5371 transitions. [2020-09-24 14:57:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:57,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-09-24 14:57:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:57,291 INFO L225 Difference]: With dead ends: 4341 [2020-09-24 14:57:57,291 INFO L226 Difference]: Without dead ends: 2349 [2020-09-24 14:57:57,296 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 14:57:57,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2020-09-24 14:57:57,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2295. [2020-09-24 14:57:57,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-09-24 14:57:57,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 2780 transitions. [2020-09-24 14:57:57,376 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 2780 transitions. Word has length 229 [2020-09-24 14:57:57,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:57,377 INFO L479 AbstractCegarLoop]: Abstraction has 2295 states and 2780 transitions. [2020-09-24 14:57:57,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 2780 transitions. [2020-09-24 14:57:57,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-24 14:57:57,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:57,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:57,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:57:57,391 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:57,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:57,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1436458987, now seen corresponding path program 1 times [2020-09-24 14:57:57,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:57,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86002189] [2020-09-24 14:57:57,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,522 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 14:57:57,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86002189] [2020-09-24 14:57:57,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:57,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:57,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637299295] [2020-09-24 14:57:57,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:57,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:57,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:57,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:57,525 INFO L87 Difference]: Start difference. First operand 2295 states and 2780 transitions. Second operand 3 states. [2020-09-24 14:57:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:57,626 INFO L93 Difference]: Finished difference Result 6366 states and 7725 transitions. [2020-09-24 14:57:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:57,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-09-24 14:57:57,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:57,649 INFO L225 Difference]: With dead ends: 6366 [2020-09-24 14:57:57,649 INFO L226 Difference]: Without dead ends: 4221 [2020-09-24 14:57:57,655 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 14:57:57,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2020-09-24 14:57:57,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 4219. [2020-09-24 14:57:57,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4219 states. [2020-09-24 14:57:57,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4219 states to 4219 states and 5072 transitions. [2020-09-24 14:57:57,831 INFO L78 Accepts]: Start accepts. Automaton has 4219 states and 5072 transitions. Word has length 236 [2020-09-24 14:57:57,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:57,832 INFO L479 AbstractCegarLoop]: Abstraction has 4219 states and 5072 transitions. [2020-09-24 14:57:57,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:57,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4219 states and 5072 transitions. [2020-09-24 14:57:57,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-24 14:57:57,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:57,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:57,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:57:57,849 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:57,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:57,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1625861187, now seen corresponding path program 1 times [2020-09-24 14:57:57,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:57,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788633245] [2020-09-24 14:57:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,952 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 14:57:57,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788633245] [2020-09-24 14:57:57,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:57,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:57,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951484842] [2020-09-24 14:57:57,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:57,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:57,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:57,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:57,955 INFO L87 Difference]: Start difference. First operand 4219 states and 5072 transitions. Second operand 3 states. [2020-09-24 14:57:58,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:58,062 INFO L93 Difference]: Finished difference Result 8366 states and 10078 transitions. [2020-09-24 14:57:58,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:58,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-09-24 14:57:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:58,082 INFO L225 Difference]: With dead ends: 8366 [2020-09-24 14:57:58,082 INFO L226 Difference]: Without dead ends: 4297 [2020-09-24 14:57:58,091 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 14:57:58,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2020-09-24 14:57:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4255. [2020-09-24 14:57:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4255 states. [2020-09-24 14:57:58,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 5092 transitions. [2020-09-24 14:57:58,216 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 5092 transitions. Word has length 237 [2020-09-24 14:57:58,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:58,216 INFO L479 AbstractCegarLoop]: Abstraction has 4255 states and 5092 transitions. [2020-09-24 14:57:58,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 5092 transitions. [2020-09-24 14:57:58,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-24 14:57:58,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:58,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:58,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:57:58,230 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:58,230 INFO L82 PathProgramCache]: Analyzing trace with hash 346316741, now seen corresponding path program 1 times [2020-09-24 14:57:58,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:58,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605918969] [2020-09-24 14:57:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:58,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:58,365 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 14:57:58,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605918969] [2020-09-24 14:57:58,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:58,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:58,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001621081] [2020-09-24 14:57:58,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:58,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:58,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:58,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:58,368 INFO L87 Difference]: Start difference. First operand 4255 states and 5092 transitions. Second operand 3 states. [2020-09-24 14:57:58,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:58,525 INFO L93 Difference]: Finished difference Result 8455 states and 10149 transitions. [2020-09-24 14:57:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:58,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-09-24 14:57:58,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:58,555 INFO L225 Difference]: With dead ends: 8455 [2020-09-24 14:57:58,556 INFO L226 Difference]: Without dead ends: 5649 [2020-09-24 14:57:58,565 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 14:57:58,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5649 states. [2020-09-24 14:57:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5649 to 5649. [2020-09-24 14:57:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5649 states. [2020-09-24 14:57:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5649 states to 5649 states and 6768 transitions. [2020-09-24 14:57:58,781 INFO L78 Accepts]: Start accepts. Automaton has 5649 states and 6768 transitions. Word has length 240 [2020-09-24 14:57:58,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:58,782 INFO L479 AbstractCegarLoop]: Abstraction has 5649 states and 6768 transitions. [2020-09-24 14:57:58,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:58,782 INFO L276 IsEmpty]: Start isEmpty. Operand 5649 states and 6768 transitions. [2020-09-24 14:57:58,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-24 14:57:58,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:58,809 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, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:58,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 14:57:58,809 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:58,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:58,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1652979383, now seen corresponding path program 1 times [2020-09-24 14:57:58,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:58,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081444975] [2020-09-24 14:57:58,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:57:58,883 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:57:58,883 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:57:58,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 14:57:58,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:57:58 BoogieIcfgContainer [2020-09-24 14:57:58,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:57:58,968 INFO L168 Benchmark]: Toolchain (without parser) took 7643.15 ms. Allocated memory was 141.0 MB in the beginning and 422.1 MB in the end (delta: 281.0 MB). Free memory was 102.9 MB in the beginning and 200.9 MB in the end (delta: -98.0 MB). Peak memory consumption was 183.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:58,968 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:57:58,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 617.80 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 179.6 MB in the end (delta: -77.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:58,976 INFO L168 Benchmark]: Boogie Preprocessor took 68.65 ms. Allocated memory is still 204.5 MB. Free memory was 179.6 MB in the beginning and 176.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:58,977 INFO L168 Benchmark]: RCFGBuilder took 1023.48 ms. Allocated memory is still 204.5 MB. Free memory was 176.7 MB in the beginning and 108.6 MB in the end (delta: 68.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:58,978 INFO L168 Benchmark]: TraceAbstraction took 5919.77 ms. Allocated memory was 204.5 MB in the beginning and 422.1 MB in the end (delta: 217.6 MB). Free memory was 108.0 MB in the beginning and 200.9 MB in the end (delta: -92.9 MB). Peak memory consumption was 124.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:57:58,994 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 617.80 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 179.6 MB in the end (delta: -77.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.65 ms. Allocated memory is still 204.5 MB. Free memory was 179.6 MB in the beginning and 176.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1023.48 ms. Allocated memory is still 204.5 MB. Free memory was 176.7 MB in the beginning and 108.6 MB in the end (delta: 68.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5919.77 ms. Allocated memory was 204.5 MB in the beginning and 422.1 MB in the end (delta: 217.6 MB). Free memory was 108.0 MB in the beginning and 200.9 MB in the end (delta: -92.9 MB). Peak memory consumption was 124.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 607]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L612] int s ; [L613] int tmp ; [L617] s = 8464 [L618] 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 ; [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 ; [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 FALSE !(tmp___1 + 12288) [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 [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] 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 [L293] COND FALSE !(ret <= 0) [L296] COND TRUE \read(s__hit) [L297] s__state = 8656 [L301] s__init_num = 0 [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] 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 FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND FALSE !(s__state == 8448) [L167] COND FALSE !(s__state == 8576) [L170] COND FALSE !(s__state == 8577) [L173] COND FALSE !(s__state == 8592) [L176] COND FALSE !(s__state == 8593) [L179] COND FALSE !(s__state == 8608) [L182] COND FALSE !(s__state == 8609) [L185] COND FALSE !(s__state == 8640) [L188] COND FALSE !(s__state == 8641) [L191] COND TRUE s__state == 8656 [L490] s__session__cipher = s__s3__tmp__new_cipher [L491] COND FALSE !(! tmp___9) [L495] ret = __VERIFIER_nondet_int() [L496] COND TRUE blastFlag == 2 [L497] blastFlag = 3 [L499] COND FALSE !(ret <= 0) [L502] s__state = 8672 [L503] s__init_num = 0 [L504] COND FALSE !(! tmp___10) [L579] COND FALSE !(! s__s3__tmp__reuse_message) [L596] 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 FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND FALSE !(s__state == 8448) [L167] COND FALSE !(s__state == 8576) [L170] COND FALSE !(s__state == 8577) [L173] COND FALSE !(s__state == 8592) [L176] COND FALSE !(s__state == 8593) [L179] COND FALSE !(s__state == 8608) [L182] COND FALSE !(s__state == 8609) [L185] COND FALSE !(s__state == 8640) [L188] COND FALSE !(s__state == 8641) [L191] COND FALSE !(s__state == 8656) [L194] COND FALSE !(s__state == 8657) [L197] COND TRUE s__state == 8672 [L511] ret = __VERIFIER_nondet_int() [L512] COND TRUE blastFlag == 3 [L607] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 411 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.7s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4756 SDtfs, 2850 SDslu, 4079 SDs, 0 SdLazy, 631 SolverSat, 123 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s 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=5649occurred 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: 0.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 191 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 2456 NumberOfCodeBlocks, 2456 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2171 ConstructedInterpolants, 0 QuantifiedInterpolants, 673622 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 239/239 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...