/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:10:59,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:10:59,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:10:59,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:10:59,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:10:59,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:10:59,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:10:59,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:10:59,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:10:59,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:10:59,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:10:59,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:10:59,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:10:59,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:10:59,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:10:59,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:10:59,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:10:59,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:10:59,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:10:59,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:10:59,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:10:59,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:10:59,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:10:59,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:10:59,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:10:59,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:10:59,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:10:59,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:10:59,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:10:59,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 22:10:59,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:10:59,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:10:59,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:10:59,813 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 [2020-08-21 22:10:59,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:10:59,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:10:59,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:10:59,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:10:59,838 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:10:59,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:10:59,838 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:10:59,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:10:59,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:10:59,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:10:59,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:10:59,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:10:59,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:10:59,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:10:59,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:10:59,840 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:10:59,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:10:59,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:10:59,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:10:59,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:10:59,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:10:59,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:10:59,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:10:59,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:10:59,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:10:59,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:10:59,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:10:59,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:10:59,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:10:59,842 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:11:00,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:11:00,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:11:00,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:11:00,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:11:00,160 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:11:00,161 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-21 22:11:00,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb78c2350/38f6e7cec1454c82bf9873b8a1fc80b3/FLAGb01e2bb50 [2020-08-21 22:11:00,723 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:11:00,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-21 22:11:00,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb78c2350/38f6e7cec1454c82bf9873b8a1fc80b3/FLAGb01e2bb50 [2020-08-21 22:11:01,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb78c2350/38f6e7cec1454c82bf9873b8a1fc80b3 [2020-08-21 22:11:01,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:11:01,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:11:01,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:11:01,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:11:01,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:11:01,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:11:01" (1/1) ... [2020-08-21 22:11:01,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d896f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:01, skipping insertion in model container [2020-08-21 22:11:01,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:11:01" (1/1) ... [2020-08-21 22:11:01,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:11:01,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:11:01,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:11:01,469 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:11:01,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:11:01,674 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:11:01,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:01 WrapperNode [2020-08-21 22:11:01,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:11:01,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:11:01,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:11:01,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:11:01,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:01" (1/1) ... [2020-08-21 22:11:01,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:01" (1/1) ... [2020-08-21 22:11:01,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:01" (1/1) ... [2020-08-21 22:11:01,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:01" (1/1) ... [2020-08-21 22:11:01,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:01" (1/1) ... [2020-08-21 22:11:01,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:01" (1/1) ... [2020-08-21 22:11:01,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:01" (1/1) ... [2020-08-21 22:11:01,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:11:01,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:11:01,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:11:01,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:11:01,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:01" (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 [2020-08-21 22:11:01,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:11:01,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:11:01,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-21 22:11:01,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:11:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:11:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 22:11:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:11:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-21 22:11:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 22:11:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-21 22:11:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:11:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:11:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:11:02,078 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-21 22:11:02,634 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-21 22:11:02,635 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-21 22:11:02,650 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:11:02,651 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 22:11:02,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:11:02 BoogieIcfgContainer [2020-08-21 22:11:02,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:11:02,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:11:02,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:11:02,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:11:02,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:11:01" (1/3) ... [2020-08-21 22:11:02,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a0afd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:11:02, skipping insertion in model container [2020-08-21 22:11:02,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:01" (2/3) ... [2020-08-21 22:11:02,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a0afd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:11:02, skipping insertion in model container [2020-08-21 22:11:02,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:11:02" (3/3) ... [2020-08-21 22:11:02,675 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-21 22:11:02,686 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:11:02,697 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:11:02,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:11:02,748 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:11:02,749 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:11:02,749 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:11:02,749 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:11:02,749 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:11:02,749 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:11:02,749 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:11:02,750 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:11:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-21 22:11:02,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 22:11:02,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:02,801 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] [2020-08-21 22:11:02,802 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:02,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-08-21 22:11:02,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:02,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645092064] [2020-08-21 22:11:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:03,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:03,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:03,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645092064] [2020-08-21 22:11:03,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:03,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:03,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323964539] [2020-08-21 22:11:03,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:03,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:03,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:03,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:03,137 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-08-21 22:11:03,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:03,501 INFO L93 Difference]: Finished difference Result 362 states and 623 transitions. [2020-08-21 22:11:03,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:03,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-21 22:11:03,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:03,518 INFO L225 Difference]: With dead ends: 362 [2020-08-21 22:11:03,519 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 22:11:03,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:03,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 22:11:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-08-21 22:11:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-21 22:11:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-08-21 22:11:03,605 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 33 [2020-08-21 22:11:03,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:03,605 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-08-21 22:11:03,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-08-21 22:11:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 22:11:03,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:03,610 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] [2020-08-21 22:11:03,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:11:03,611 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:03,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:03,611 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-08-21 22:11:03,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:03,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893753398] [2020-08-21 22:11:03,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:03,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:03,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893753398] [2020-08-21 22:11:03,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:03,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:03,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349610927] [2020-08-21 22:11:03,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:03,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:03,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:03,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:03,755 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-08-21 22:11:03,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:03,981 INFO L93 Difference]: Finished difference Result 363 states and 580 transitions. [2020-08-21 22:11:03,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:03,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 22:11:03,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:03,985 INFO L225 Difference]: With dead ends: 363 [2020-08-21 22:11:03,985 INFO L226 Difference]: Without dead ends: 199 [2020-08-21 22:11:03,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-21 22:11:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-08-21 22:11:04,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-21 22:11:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 312 transitions. [2020-08-21 22:11:04,007 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 312 transitions. Word has length 34 [2020-08-21 22:11:04,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:04,008 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 312 transitions. [2020-08-21 22:11:04,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:04,008 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 312 transitions. [2020-08-21 22:11:04,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 22:11:04,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:04,010 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] [2020-08-21 22:11:04,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:11:04,010 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:04,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:04,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-08-21 22:11:04,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:04,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008129780] [2020-08-21 22:11:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:04,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:04,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008129780] [2020-08-21 22:11:04,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:04,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:04,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466864215] [2020-08-21 22:11:04,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:04,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:04,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:04,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:04,085 INFO L87 Difference]: Start difference. First operand 199 states and 312 transitions. Second operand 5 states. [2020-08-21 22:11:04,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:04,337 INFO L93 Difference]: Finished difference Result 393 states and 621 transitions. [2020-08-21 22:11:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:04,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 22:11:04,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:04,341 INFO L225 Difference]: With dead ends: 393 [2020-08-21 22:11:04,341 INFO L226 Difference]: Without dead ends: 207 [2020-08-21 22:11:04,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:04,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-21 22:11:04,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-08-21 22:11:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-21 22:11:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2020-08-21 22:11:04,367 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 34 [2020-08-21 22:11:04,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:04,380 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2020-08-21 22:11:04,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2020-08-21 22:11:04,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 22:11:04,382 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:04,382 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] [2020-08-21 22:11:04,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:11:04,383 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:04,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:04,383 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-08-21 22:11:04,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:04,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623299872] [2020-08-21 22:11:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:04,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:04,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623299872] [2020-08-21 22:11:04,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:04,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:04,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146108684] [2020-08-21 22:11:04,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:04,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:04,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:04,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:04,453 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand 5 states. [2020-08-21 22:11:04,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:04,673 INFO L93 Difference]: Finished difference Result 398 states and 631 transitions. [2020-08-21 22:11:04,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:04,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 22:11:04,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:04,675 INFO L225 Difference]: With dead ends: 398 [2020-08-21 22:11:04,675 INFO L226 Difference]: Without dead ends: 206 [2020-08-21 22:11:04,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:04,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-21 22:11:04,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-21 22:11:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 22:11:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 324 transitions. [2020-08-21 22:11:04,691 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 324 transitions. Word has length 34 [2020-08-21 22:11:04,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:04,692 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 324 transitions. [2020-08-21 22:11:04,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 324 transitions. [2020-08-21 22:11:04,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-21 22:11:04,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:04,694 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] [2020-08-21 22:11:04,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:11:04,694 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:04,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:04,695 INFO L82 PathProgramCache]: Analyzing trace with hash 715486203, now seen corresponding path program 1 times [2020-08-21 22:11:04,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:04,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442908000] [2020-08-21 22:11:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:04,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:04,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442908000] [2020-08-21 22:11:04,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:04,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:04,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581589271] [2020-08-21 22:11:04,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:04,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:04,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:04,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:04,785 INFO L87 Difference]: Start difference. First operand 206 states and 324 transitions. Second operand 5 states. [2020-08-21 22:11:04,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:04,987 INFO L93 Difference]: Finished difference Result 409 states and 643 transitions. [2020-08-21 22:11:04,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:04,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-21 22:11:04,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:04,989 INFO L225 Difference]: With dead ends: 409 [2020-08-21 22:11:04,990 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 22:11:04,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:04,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 22:11:05,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-21 22:11:05,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 22:11:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 322 transitions. [2020-08-21 22:11:05,003 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 322 transitions. Word has length 35 [2020-08-21 22:11:05,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:05,003 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 322 transitions. [2020-08-21 22:11:05,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:05,004 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 322 transitions. [2020-08-21 22:11:05,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-21 22:11:05,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:05,005 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] [2020-08-21 22:11:05,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:11:05,006 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:05,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:05,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1092720099, now seen corresponding path program 1 times [2020-08-21 22:11:05,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:05,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316491962] [2020-08-21 22:11:05,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:05,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:05,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316491962] [2020-08-21 22:11:05,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:05,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:05,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209490802] [2020-08-21 22:11:05,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:05,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:05,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:05,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:05,090 INFO L87 Difference]: Start difference. First operand 206 states and 322 transitions. Second operand 5 states. [2020-08-21 22:11:05,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:05,284 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2020-08-21 22:11:05,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:05,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-21 22:11:05,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:05,287 INFO L225 Difference]: With dead ends: 409 [2020-08-21 22:11:05,287 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 22:11:05,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:05,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 22:11:05,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-21 22:11:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 22:11:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2020-08-21 22:11:05,298 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 36 [2020-08-21 22:11:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:05,299 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2020-08-21 22:11:05,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2020-08-21 22:11:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-21 22:11:05,300 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:05,301 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] [2020-08-21 22:11:05,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:11:05,301 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:05,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:05,301 INFO L82 PathProgramCache]: Analyzing trace with hash 958823552, now seen corresponding path program 1 times [2020-08-21 22:11:05,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:05,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984601822] [2020-08-21 22:11:05,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:05,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:05,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984601822] [2020-08-21 22:11:05,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:05,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:05,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261486577] [2020-08-21 22:11:05,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:05,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:05,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:05,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:05,355 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand 5 states. [2020-08-21 22:11:05,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:05,539 INFO L93 Difference]: Finished difference Result 409 states and 635 transitions. [2020-08-21 22:11:05,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:05,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-21 22:11:05,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:05,542 INFO L225 Difference]: With dead ends: 409 [2020-08-21 22:11:05,542 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 22:11:05,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:05,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 22:11:05,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-21 22:11:05,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-21 22:11:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2020-08-21 22:11:05,554 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 37 [2020-08-21 22:11:05,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:05,555 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2020-08-21 22:11:05,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:05,555 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2020-08-21 22:11:05,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-21 22:11:05,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:05,557 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] [2020-08-21 22:11:05,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:11:05,557 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:05,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:05,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-08-21 22:11:05,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:05,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961174554] [2020-08-21 22:11:05,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:05,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:05,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:05,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961174554] [2020-08-21 22:11:05,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:05,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:11:05,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586660443] [2020-08-21 22:11:05,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:11:05,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:05,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:11:05,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:05,643 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand 6 states. [2020-08-21 22:11:05,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:05,991 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-08-21 22:11:05,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:11:05,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-21 22:11:05,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:05,994 INFO L225 Difference]: With dead ends: 605 [2020-08-21 22:11:05,994 INFO L226 Difference]: Without dead ends: 412 [2020-08-21 22:11:05,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:11:05,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-21 22:11:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2020-08-21 22:11:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-08-21 22:11:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2020-08-21 22:11:06,017 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 37 [2020-08-21 22:11:06,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:06,018 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2020-08-21 22:11:06,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:11:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2020-08-21 22:11:06,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-21 22:11:06,020 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:06,020 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] [2020-08-21 22:11:06,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:11:06,020 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:06,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:06,021 INFO L82 PathProgramCache]: Analyzing trace with hash 2018661528, now seen corresponding path program 1 times [2020-08-21 22:11:06,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:06,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469636751] [2020-08-21 22:11:06,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:06,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:06,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469636751] [2020-08-21 22:11:06,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:06,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:06,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270516558] [2020-08-21 22:11:06,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:06,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:06,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:06,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:06,080 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand 5 states. [2020-08-21 22:11:06,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:06,345 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2020-08-21 22:11:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:06,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-08-21 22:11:06,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:06,349 INFO L225 Difference]: With dead ends: 847 [2020-08-21 22:11:06,349 INFO L226 Difference]: Without dead ends: 472 [2020-08-21 22:11:06,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:06,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-21 22:11:06,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2020-08-21 22:11:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-21 22:11:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 715 transitions. [2020-08-21 22:11:06,378 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 715 transitions. Word has length 49 [2020-08-21 22:11:06,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:06,379 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 715 transitions. [2020-08-21 22:11:06,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:06,379 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 715 transitions. [2020-08-21 22:11:06,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-21 22:11:06,380 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:06,380 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] [2020-08-21 22:11:06,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:11:06,381 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:06,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:06,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1742182651, now seen corresponding path program 1 times [2020-08-21 22:11:06,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:06,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515576152] [2020-08-21 22:11:06,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:06,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:06,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515576152] [2020-08-21 22:11:06,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:06,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:06,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960798319] [2020-08-21 22:11:06,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:06,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:06,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:06,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:06,445 INFO L87 Difference]: Start difference. First operand 454 states and 715 transitions. Second operand 5 states. [2020-08-21 22:11:06,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:06,705 INFO L93 Difference]: Finished difference Result 936 states and 1487 transitions. [2020-08-21 22:11:06,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:06,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-08-21 22:11:06,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:06,709 INFO L225 Difference]: With dead ends: 936 [2020-08-21 22:11:06,710 INFO L226 Difference]: Without dead ends: 495 [2020-08-21 22:11:06,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-21 22:11:06,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-08-21 22:11:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-08-21 22:11:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 758 transitions. [2020-08-21 22:11:06,739 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 758 transitions. Word has length 50 [2020-08-21 22:11:06,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:06,739 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 758 transitions. [2020-08-21 22:11:06,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 758 transitions. [2020-08-21 22:11:06,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 22:11:06,741 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:06,741 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 22:11:06,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:11:06,741 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:06,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:06,742 INFO L82 PathProgramCache]: Analyzing trace with hash 928180771, now seen corresponding path program 1 times [2020-08-21 22:11:06,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:06,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666126182] [2020-08-21 22:11:06,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:06,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 22:11:06,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666126182] [2020-08-21 22:11:06,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:06,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:06,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872886262] [2020-08-21 22:11:06,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:06,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:06,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:06,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:06,835 INFO L87 Difference]: Start difference. First operand 477 states and 758 transitions. Second operand 5 states. [2020-08-21 22:11:07,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:07,067 INFO L93 Difference]: Finished difference Result 993 states and 1583 transitions. [2020-08-21 22:11:07,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:07,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-08-21 22:11:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:07,071 INFO L225 Difference]: With dead ends: 993 [2020-08-21 22:11:07,071 INFO L226 Difference]: Without dead ends: 529 [2020-08-21 22:11:07,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:07,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-21 22:11:07,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-21 22:11:07,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-21 22:11:07,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 809 transitions. [2020-08-21 22:11:07,098 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 809 transitions. Word has length 61 [2020-08-21 22:11:07,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:07,099 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 809 transitions. [2020-08-21 22:11:07,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:07,099 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 809 transitions. [2020-08-21 22:11:07,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 22:11:07,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:07,100 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 22:11:07,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:11:07,101 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:07,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:07,101 INFO L82 PathProgramCache]: Analyzing trace with hash 171040523, now seen corresponding path program 1 times [2020-08-21 22:11:07,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:07,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302716483] [2020-08-21 22:11:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:07,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 22:11:07,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302716483] [2020-08-21 22:11:07,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:07,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:07,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285411082] [2020-08-21 22:11:07,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:07,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:07,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:07,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:07,150 INFO L87 Difference]: Start difference. First operand 511 states and 809 transitions. Second operand 5 states. [2020-08-21 22:11:07,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:07,383 INFO L93 Difference]: Finished difference Result 1027 states and 1631 transitions. [2020-08-21 22:11:07,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:07,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-21 22:11:07,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:07,386 INFO L225 Difference]: With dead ends: 1027 [2020-08-21 22:11:07,387 INFO L226 Difference]: Without dead ends: 529 [2020-08-21 22:11:07,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:07,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-21 22:11:07,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-21 22:11:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-21 22:11:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 806 transitions. [2020-08-21 22:11:07,414 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 806 transitions. Word has length 62 [2020-08-21 22:11:07,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:07,415 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 806 transitions. [2020-08-21 22:11:07,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:07,415 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 806 transitions. [2020-08-21 22:11:07,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 22:11:07,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:07,416 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 22:11:07,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 22:11:07,417 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:07,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2117537729, now seen corresponding path program 1 times [2020-08-21 22:11:07,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:07,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355008874] [2020-08-21 22:11:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 22:11:07,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355008874] [2020-08-21 22:11:07,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:07,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:07,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067987191] [2020-08-21 22:11:07,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:07,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:07,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:07,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:07,467 INFO L87 Difference]: Start difference. First operand 511 states and 806 transitions. Second operand 5 states. [2020-08-21 22:11:07,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:07,766 INFO L93 Difference]: Finished difference Result 1074 states and 1702 transitions. [2020-08-21 22:11:07,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:07,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-21 22:11:07,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:07,770 INFO L225 Difference]: With dead ends: 1074 [2020-08-21 22:11:07,770 INFO L226 Difference]: Without dead ends: 576 [2020-08-21 22:11:07,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-21 22:11:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2020-08-21 22:11:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-08-21 22:11:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 903 transitions. [2020-08-21 22:11:07,801 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 903 transitions. Word has length 62 [2020-08-21 22:11:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:07,803 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 903 transitions. [2020-08-21 22:11:07,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:07,803 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 903 transitions. [2020-08-21 22:11:07,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 22:11:07,808 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:07,808 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 22:11:07,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 22:11:07,809 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:07,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:07,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1816844012, now seen corresponding path program 1 times [2020-08-21 22:11:07,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:07,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580356825] [2020-08-21 22:11:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:07,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:07,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580356825] [2020-08-21 22:11:07,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:07,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:07,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264441007] [2020-08-21 22:11:07,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:07,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:07,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:07,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:07,877 INFO L87 Difference]: Start difference. First operand 574 states and 903 transitions. Second operand 5 states. [2020-08-21 22:11:08,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:08,095 INFO L93 Difference]: Finished difference Result 1184 states and 1864 transitions. [2020-08-21 22:11:08,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:08,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-21 22:11:08,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:08,099 INFO L225 Difference]: With dead ends: 1184 [2020-08-21 22:11:08,099 INFO L226 Difference]: Without dead ends: 623 [2020-08-21 22:11:08,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:08,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-21 22:11:08,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-21 22:11:08,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-21 22:11:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 967 transitions. [2020-08-21 22:11:08,131 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 967 transitions. Word has length 84 [2020-08-21 22:11:08,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:08,131 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 967 transitions. [2020-08-21 22:11:08,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:08,131 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 967 transitions. [2020-08-21 22:11:08,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-21 22:11:08,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:08,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 22:11:08,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 22:11:08,133 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:08,134 INFO L82 PathProgramCache]: Analyzing trace with hash -584276215, now seen corresponding path program 1 times [2020-08-21 22:11:08,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:08,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212405797] [2020-08-21 22:11:08,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:08,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:08,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212405797] [2020-08-21 22:11:08,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:08,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:08,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626008738] [2020-08-21 22:11:08,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:08,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:08,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:08,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:08,199 INFO L87 Difference]: Start difference. First operand 617 states and 967 transitions. Second operand 5 states. [2020-08-21 22:11:08,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:08,459 INFO L93 Difference]: Finished difference Result 1227 states and 1925 transitions. [2020-08-21 22:11:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:08,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-21 22:11:08,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:08,464 INFO L225 Difference]: With dead ends: 1227 [2020-08-21 22:11:08,465 INFO L226 Difference]: Without dead ends: 623 [2020-08-21 22:11:08,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:08,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-21 22:11:08,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-21 22:11:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-21 22:11:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 964 transitions. [2020-08-21 22:11:08,502 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 964 transitions. Word has length 85 [2020-08-21 22:11:08,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:08,503 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 964 transitions. [2020-08-21 22:11:08,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 964 transitions. [2020-08-21 22:11:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 22:11:08,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:08,505 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 22:11:08,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 22:11:08,506 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:08,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:08,506 INFO L82 PathProgramCache]: Analyzing trace with hash 220190302, now seen corresponding path program 1 times [2020-08-21 22:11:08,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:08,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347496160] [2020-08-21 22:11:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:08,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:08,582 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 22:11:08,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347496160] [2020-08-21 22:11:08,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:08,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:08,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941212297] [2020-08-21 22:11:08,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:08,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:08,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:08,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:08,585 INFO L87 Difference]: Start difference. First operand 617 states and 964 transitions. Second operand 5 states. [2020-08-21 22:11:08,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:08,811 INFO L93 Difference]: Finished difference Result 1223 states and 1913 transitions. [2020-08-21 22:11:08,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:08,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-08-21 22:11:08,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:08,815 INFO L225 Difference]: With dead ends: 1223 [2020-08-21 22:11:08,815 INFO L226 Difference]: Without dead ends: 619 [2020-08-21 22:11:08,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:08,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-08-21 22:11:08,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-08-21 22:11:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-21 22:11:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 959 transitions. [2020-08-21 22:11:08,845 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 959 transitions. Word has length 90 [2020-08-21 22:11:08,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:08,845 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 959 transitions. [2020-08-21 22:11:08,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 959 transitions. [2020-08-21 22:11:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 22:11:08,847 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:08,848 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 22:11:08,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 22:11:08,848 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:08,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073075, now seen corresponding path program 1 times [2020-08-21 22:11:08,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:08,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819822163] [2020-08-21 22:11:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:08,898 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 22:11:08,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819822163] [2020-08-21 22:11:08,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:08,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:08,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097715714] [2020-08-21 22:11:08,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:08,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:08,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:08,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:08,900 INFO L87 Difference]: Start difference. First operand 617 states and 959 transitions. Second operand 5 states. [2020-08-21 22:11:09,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:09,130 INFO L93 Difference]: Finished difference Result 1281 states and 1996 transitions. [2020-08-21 22:11:09,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:09,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-21 22:11:09,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:09,135 INFO L225 Difference]: With dead ends: 1281 [2020-08-21 22:11:09,135 INFO L226 Difference]: Without dead ends: 677 [2020-08-21 22:11:09,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:09,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-21 22:11:09,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-21 22:11:09,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 22:11:09,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1002 transitions. [2020-08-21 22:11:09,167 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1002 transitions. Word has length 98 [2020-08-21 22:11:09,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:09,168 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 1002 transitions. [2020-08-21 22:11:09,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:09,168 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1002 transitions. [2020-08-21 22:11:09,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 22:11:09,170 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:09,170 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 22:11:09,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 22:11:09,170 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:09,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:09,171 INFO L82 PathProgramCache]: Analyzing trace with hash -90077499, now seen corresponding path program 1 times [2020-08-21 22:11:09,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:09,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742221971] [2020-08-21 22:11:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:09,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 22:11:09,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742221971] [2020-08-21 22:11:09,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:09,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:09,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273964395] [2020-08-21 22:11:09,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:09,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:09,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:09,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:09,223 INFO L87 Difference]: Start difference. First operand 649 states and 1002 transitions. Second operand 5 states. [2020-08-21 22:11:09,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:09,471 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2020-08-21 22:11:09,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:09,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-08-21 22:11:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:09,475 INFO L225 Difference]: With dead ends: 1313 [2020-08-21 22:11:09,475 INFO L226 Difference]: Without dead ends: 677 [2020-08-21 22:11:09,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:09,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-21 22:11:09,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-21 22:11:09,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 22:11:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 996 transitions. [2020-08-21 22:11:09,516 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 996 transitions. Word has length 99 [2020-08-21 22:11:09,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:09,517 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 996 transitions. [2020-08-21 22:11:09,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:09,517 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 996 transitions. [2020-08-21 22:11:09,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-21 22:11:09,520 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:09,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 22:11:09,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-21 22:11:09,522 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:09,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:09,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1708621622, now seen corresponding path program 1 times [2020-08-21 22:11:09,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:09,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3809478] [2020-08-21 22:11:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:09,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 22:11:09,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3809478] [2020-08-21 22:11:09,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:09,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:09,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523163032] [2020-08-21 22:11:09,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:09,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:09,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:09,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:09,583 INFO L87 Difference]: Start difference. First operand 649 states and 996 transitions. Second operand 5 states. [2020-08-21 22:11:09,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:09,858 INFO L93 Difference]: Finished difference Result 1349 states and 2073 transitions. [2020-08-21 22:11:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:09,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-08-21 22:11:09,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:09,864 INFO L225 Difference]: With dead ends: 1349 [2020-08-21 22:11:09,864 INFO L226 Difference]: Without dead ends: 713 [2020-08-21 22:11:09,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:09,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-08-21 22:11:09,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-08-21 22:11:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-21 22:11:09,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1072 transitions. [2020-08-21 22:11:09,911 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1072 transitions. Word has length 105 [2020-08-21 22:11:09,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:09,911 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1072 transitions. [2020-08-21 22:11:09,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1072 transitions. [2020-08-21 22:11:09,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-21 22:11:09,915 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:09,915 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 22:11:09,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-21 22:11:09,916 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:09,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:09,917 INFO L82 PathProgramCache]: Analyzing trace with hash 2058755821, now seen corresponding path program 1 times [2020-08-21 22:11:09,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:09,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103926767] [2020-08-21 22:11:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:09,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 22:11:10,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103926767] [2020-08-21 22:11:10,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:10,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:10,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301501517] [2020-08-21 22:11:10,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:10,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:10,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:10,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:10,006 INFO L87 Difference]: Start difference. First operand 701 states and 1072 transitions. Second operand 5 states. [2020-08-21 22:11:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:10,361 INFO L93 Difference]: Finished difference Result 1406 states and 2155 transitions. [2020-08-21 22:11:10,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:10,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-08-21 22:11:10,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:10,368 INFO L225 Difference]: With dead ends: 1406 [2020-08-21 22:11:10,368 INFO L226 Difference]: Without dead ends: 714 [2020-08-21 22:11:10,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:10,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-21 22:11:10,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2020-08-21 22:11:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-21 22:11:10,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1073 transitions. [2020-08-21 22:11:10,448 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1073 transitions. Word has length 106 [2020-08-21 22:11:10,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:10,448 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1073 transitions. [2020-08-21 22:11:10,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:10,449 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1073 transitions. [2020-08-21 22:11:10,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 22:11:10,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:10,452 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 22:11:10,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-21 22:11:10,453 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:10,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:10,453 INFO L82 PathProgramCache]: Analyzing trace with hash 646120304, now seen corresponding path program 1 times [2020-08-21 22:11:10,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:10,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294517606] [2020-08-21 22:11:10,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 22:11:10,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294517606] [2020-08-21 22:11:10,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:10,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:10,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461609941] [2020-08-21 22:11:10,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:10,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:10,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:10,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:10,561 INFO L87 Difference]: Start difference. First operand 702 states and 1073 transitions. Second operand 5 states. [2020-08-21 22:11:10,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:10,895 INFO L93 Difference]: Finished difference Result 1438 states and 2197 transitions. [2020-08-21 22:11:10,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:10,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-08-21 22:11:10,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:10,901 INFO L225 Difference]: With dead ends: 1438 [2020-08-21 22:11:10,901 INFO L226 Difference]: Without dead ends: 749 [2020-08-21 22:11:10,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:10,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-21 22:11:10,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-21 22:11:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-21 22:11:10,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1128 transitions. [2020-08-21 22:11:10,959 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1128 transitions. Word has length 117 [2020-08-21 22:11:10,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:10,960 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1128 transitions. [2020-08-21 22:11:10,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:10,960 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1128 transitions. [2020-08-21 22:11:10,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-21 22:11:10,964 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:10,964 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 22:11:10,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-21 22:11:10,965 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:10,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:10,965 INFO L82 PathProgramCache]: Analyzing trace with hash 820078483, now seen corresponding path program 1 times [2020-08-21 22:11:10,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:10,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327580316] [2020-08-21 22:11:10,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:11,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 22:11:11,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327580316] [2020-08-21 22:11:11,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:11,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:11,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641253008] [2020-08-21 22:11:11,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:11,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:11,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:11,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:11,093 INFO L87 Difference]: Start difference. First operand 743 states and 1128 transitions. Second operand 5 states. [2020-08-21 22:11:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:11,348 INFO L93 Difference]: Finished difference Result 1479 states and 2247 transitions. [2020-08-21 22:11:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:11,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-08-21 22:11:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:11,355 INFO L225 Difference]: With dead ends: 1479 [2020-08-21 22:11:11,355 INFO L226 Difference]: Without dead ends: 749 [2020-08-21 22:11:11,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:11,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-21 22:11:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-21 22:11:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-21 22:11:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1123 transitions. [2020-08-21 22:11:11,403 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1123 transitions. Word has length 118 [2020-08-21 22:11:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:11,403 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1123 transitions. [2020-08-21 22:11:11,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1123 transitions. [2020-08-21 22:11:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-21 22:11:11,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:11,407 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-08-21 22:11:11,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-21 22:11:11,408 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:11,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:11,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1832218007, now seen corresponding path program 1 times [2020-08-21 22:11:11,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:11,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601696871] [2020-08-21 22:11:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:11,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 22:11:11,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601696871] [2020-08-21 22:11:11,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:11,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:11,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412547857] [2020-08-21 22:11:11,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:11,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:11,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:11,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:11,523 INFO L87 Difference]: Start difference. First operand 743 states and 1123 transitions. Second operand 5 states. [2020-08-21 22:11:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:11,733 INFO L93 Difference]: Finished difference Result 1515 states and 2290 transitions. [2020-08-21 22:11:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:11,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-08-21 22:11:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:11,737 INFO L225 Difference]: With dead ends: 1515 [2020-08-21 22:11:11,737 INFO L226 Difference]: Without dead ends: 785 [2020-08-21 22:11:11,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:11,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-21 22:11:11,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-21 22:11:11,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-21 22:11:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1161 transitions. [2020-08-21 22:11:11,785 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1161 transitions. Word has length 120 [2020-08-21 22:11:11,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:11,786 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1161 transitions. [2020-08-21 22:11:11,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:11,786 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1161 transitions. [2020-08-21 22:11:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-21 22:11:11,789 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:11,789 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-08-21 22:11:11,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-21 22:11:11,790 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:11,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:11,791 INFO L82 PathProgramCache]: Analyzing trace with hash 2144394689, now seen corresponding path program 1 times [2020-08-21 22:11:11,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:11,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688570791] [2020-08-21 22:11:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 22:11:11,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688570791] [2020-08-21 22:11:11,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:11,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:11,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388728384] [2020-08-21 22:11:11,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:11,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:11,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:11,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:11,874 INFO L87 Difference]: Start difference. First operand 775 states and 1161 transitions. Second operand 5 states. [2020-08-21 22:11:12,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,173 INFO L93 Difference]: Finished difference Result 1547 states and 2319 transitions. [2020-08-21 22:11:12,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:12,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-08-21 22:11:12,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,178 INFO L225 Difference]: With dead ends: 1547 [2020-08-21 22:11:12,179 INFO L226 Difference]: Without dead ends: 785 [2020-08-21 22:11:12,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:12,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-21 22:11:12,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-21 22:11:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-21 22:11:12,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1152 transitions. [2020-08-21 22:11:12,231 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1152 transitions. Word has length 121 [2020-08-21 22:11:12,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:12,231 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1152 transitions. [2020-08-21 22:11:12,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:12,232 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1152 transitions. [2020-08-21 22:11:12,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-21 22:11:12,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:12,234 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 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] [2020-08-21 22:11:12,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-21 22:11:12,234 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:12,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:12,235 INFO L82 PathProgramCache]: Analyzing trace with hash -40343791, now seen corresponding path program 1 times [2020-08-21 22:11:12,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:12,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772006874] [2020-08-21 22:11:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-21 22:11:12,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772006874] [2020-08-21 22:11:12,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:12,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:12,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752646083] [2020-08-21 22:11:12,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:12,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:12,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:12,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:12,337 INFO L87 Difference]: Start difference. First operand 775 states and 1152 transitions. Second operand 5 states. [2020-08-21 22:11:12,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,597 INFO L93 Difference]: Finished difference Result 1573 states and 2340 transitions. [2020-08-21 22:11:12,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:12,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-21 22:11:12,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,602 INFO L225 Difference]: With dead ends: 1573 [2020-08-21 22:11:12,602 INFO L226 Difference]: Without dead ends: 811 [2020-08-21 22:11:12,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:12,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-21 22:11:12,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-21 22:11:12,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-21 22:11:12,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2020-08-21 22:11:12,666 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 142 [2020-08-21 22:11:12,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:12,666 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2020-08-21 22:11:12,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:12,666 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2020-08-21 22:11:12,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 22:11:12,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:12,670 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 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] [2020-08-21 22:11:12,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-21 22:11:12,670 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:12,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:12,671 INFO L82 PathProgramCache]: Analyzing trace with hash -46422775, now seen corresponding path program 1 times [2020-08-21 22:11:12,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:12,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572453841] [2020-08-21 22:11:12,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-21 22:11:12,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572453841] [2020-08-21 22:11:12,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:12,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:12,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584002994] [2020-08-21 22:11:12,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:12,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:12,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:12,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:12,757 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand 5 states. [2020-08-21 22:11:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,984 INFO L93 Difference]: Finished difference Result 1601 states and 2361 transitions. [2020-08-21 22:11:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:12,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-21 22:11:12,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,989 INFO L225 Difference]: With dead ends: 1601 [2020-08-21 22:11:12,989 INFO L226 Difference]: Without dead ends: 811 [2020-08-21 22:11:12,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:12,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-21 22:11:13,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-21 22:11:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-21 22:11:13,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1173 transitions. [2020-08-21 22:11:13,033 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1173 transitions. Word has length 143 [2020-08-21 22:11:13,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:13,033 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1173 transitions. [2020-08-21 22:11:13,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:13,034 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1173 transitions. [2020-08-21 22:11:13,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 22:11:13,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:13,036 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 22:11:13,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-21 22:11:13,037 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:13,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:13,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1282567469, now seen corresponding path program 1 times [2020-08-21 22:11:13,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:13,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049909703] [2020-08-21 22:11:13,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,105 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 22:11:13,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049909703] [2020-08-21 22:11:13,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:13,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:13,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523287672] [2020-08-21 22:11:13,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:13,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:13,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:13,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:13,107 INFO L87 Difference]: Start difference. First operand 803 states and 1173 transitions. Second operand 5 states. [2020-08-21 22:11:13,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:13,380 INFO L93 Difference]: Finished difference Result 1656 states and 2415 transitions. [2020-08-21 22:11:13,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:13,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-21 22:11:13,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:13,385 INFO L225 Difference]: With dead ends: 1656 [2020-08-21 22:11:13,385 INFO L226 Difference]: Without dead ends: 866 [2020-08-21 22:11:13,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-08-21 22:11:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2020-08-21 22:11:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-08-21 22:11:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1234 transitions. [2020-08-21 22:11:13,428 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1234 transitions. Word has length 146 [2020-08-21 22:11:13,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:13,429 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1234 transitions. [2020-08-21 22:11:13,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:13,429 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1234 transitions. [2020-08-21 22:11:13,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 22:11:13,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:13,431 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 22:11:13,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-21 22:11:13,432 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:13,432 INFO L82 PathProgramCache]: Analyzing trace with hash -399456400, now seen corresponding path program 1 times [2020-08-21 22:11:13,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:13,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560889182] [2020-08-21 22:11:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 22:11:13,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560889182] [2020-08-21 22:11:13,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:13,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:13,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55951762] [2020-08-21 22:11:13,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:13,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:13,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:13,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:13,491 INFO L87 Difference]: Start difference. First operand 852 states and 1234 transitions. Second operand 5 states. [2020-08-21 22:11:13,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:13,770 INFO L93 Difference]: Finished difference Result 1705 states and 2473 transitions. [2020-08-21 22:11:13,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:13,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-08-21 22:11:13,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:13,775 INFO L225 Difference]: With dead ends: 1705 [2020-08-21 22:11:13,775 INFO L226 Difference]: Without dead ends: 850 [2020-08-21 22:11:13,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:13,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-21 22:11:13,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2020-08-21 22:11:13,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-21 22:11:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1211 transitions. [2020-08-21 22:11:13,829 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1211 transitions. Word has length 147 [2020-08-21 22:11:13,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:13,829 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1211 transitions. [2020-08-21 22:11:13,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:13,829 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1211 transitions. [2020-08-21 22:11:13,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 22:11:13,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:13,832 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-08-21 22:11:13,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-21 22:11:13,832 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:13,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:13,832 INFO L82 PathProgramCache]: Analyzing trace with hash 947927939, now seen corresponding path program 1 times [2020-08-21 22:11:13,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:13,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084899973] [2020-08-21 22:11:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-21 22:11:13,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084899973] [2020-08-21 22:11:13,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:13,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:13,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540711699] [2020-08-21 22:11:13,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:13,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:13,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:13,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:13,892 INFO L87 Difference]: Start difference. First operand 836 states and 1211 transitions. Second operand 5 states. [2020-08-21 22:11:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:14,148 INFO L93 Difference]: Finished difference Result 1671 states and 2423 transitions. [2020-08-21 22:11:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:14,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-21 22:11:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:14,154 INFO L225 Difference]: With dead ends: 1671 [2020-08-21 22:11:14,154 INFO L226 Difference]: Without dead ends: 848 [2020-08-21 22:11:14,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:14,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-08-21 22:11:14,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 836. [2020-08-21 22:11:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-21 22:11:14,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-08-21 22:11:14,202 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 151 [2020-08-21 22:11:14,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:14,202 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-08-21 22:11:14,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:14,202 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-08-21 22:11:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 22:11:14,204 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:14,204 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-08-21 22:11:14,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-21 22:11:14,205 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:14,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:14,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1674902650, now seen corresponding path program 1 times [2020-08-21 22:11:14,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:14,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705014091] [2020-08-21 22:11:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:14,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:14,272 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-21 22:11:14,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705014091] [2020-08-21 22:11:14,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:14,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:11:14,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165814635] [2020-08-21 22:11:14,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:11:14,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:14,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:11:14,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:14,276 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 5 states. [2020-08-21 22:11:14,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:14,523 INFO L93 Difference]: Finished difference Result 1671 states and 2409 transitions. [2020-08-21 22:11:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:11:14,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-21 22:11:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:14,528 INFO L225 Difference]: With dead ends: 1671 [2020-08-21 22:11:14,528 INFO L226 Difference]: Without dead ends: 831 [2020-08-21 22:11:14,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:11:14,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-21 22:11:14,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 819. [2020-08-21 22:11:14,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-21 22:11:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1175 transitions. [2020-08-21 22:11:14,588 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1175 transitions. Word has length 152 [2020-08-21 22:11:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:14,589 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1175 transitions. [2020-08-21 22:11:14,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:11:14,589 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1175 transitions. [2020-08-21 22:11:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-21 22:11:14,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:14,592 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-08-21 22:11:14,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-21 22:11:14,592 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:14,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:14,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1165219020, now seen corresponding path program 1 times [2020-08-21 22:11:14,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:14,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725855228] [2020-08-21 22:11:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:14,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-21 22:11:14,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725855228] [2020-08-21 22:11:14,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:14,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:14,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188336106] [2020-08-21 22:11:14,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:14,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:14,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:14,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:14,701 INFO L87 Difference]: Start difference. First operand 819 states and 1175 transitions. Second operand 3 states. [2020-08-21 22:11:14,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:14,789 INFO L93 Difference]: Finished difference Result 2417 states and 3465 transitions. [2020-08-21 22:11:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:14,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-21 22:11:14,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:14,797 INFO L225 Difference]: With dead ends: 2417 [2020-08-21 22:11:14,797 INFO L226 Difference]: Without dead ends: 1611 [2020-08-21 22:11:14,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-08-21 22:11:14,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 821. [2020-08-21 22:11:14,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-21 22:11:14,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1177 transitions. [2020-08-21 22:11:14,854 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1177 transitions. Word has length 159 [2020-08-21 22:11:14,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:14,854 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1177 transitions. [2020-08-21 22:11:14,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:14,855 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1177 transitions. [2020-08-21 22:11:14,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-21 22:11:14,857 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:14,857 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-08-21 22:11:14,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-21 22:11:14,857 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:14,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:14,858 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-08-21 22:11:14,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:14,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335305334] [2020-08-21 22:11:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:14,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-21 22:11:14,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335305334] [2020-08-21 22:11:14,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:14,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:14,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273778390] [2020-08-21 22:11:14,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:14,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:14,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:14,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:14,950 INFO L87 Difference]: Start difference. First operand 821 states and 1177 transitions. Second operand 3 states. [2020-08-21 22:11:15,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:15,062 INFO L93 Difference]: Finished difference Result 2416 states and 3461 transitions. [2020-08-21 22:11:15,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:15,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-21 22:11:15,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:15,071 INFO L225 Difference]: With dead ends: 2416 [2020-08-21 22:11:15,072 INFO L226 Difference]: Without dead ends: 1608 [2020-08-21 22:11:15,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:15,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-21 22:11:15,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2020-08-21 22:11:15,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-21 22:11:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2297 transitions. [2020-08-21 22:11:15,171 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2297 transitions. Word has length 159 [2020-08-21 22:11:15,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:15,171 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2297 transitions. [2020-08-21 22:11:15,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:15,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2297 transitions. [2020-08-21 22:11:15,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-21 22:11:15,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:15,174 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-08-21 22:11:15,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-21 22:11:15,175 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:15,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:15,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-08-21 22:11:15,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:15,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473419882] [2020-08-21 22:11:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-21 22:11:15,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473419882] [2020-08-21 22:11:15,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:15,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:15,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432405846] [2020-08-21 22:11:15,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:15,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:15,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:15,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:15,336 INFO L87 Difference]: Start difference. First operand 1606 states and 2297 transitions. Second operand 3 states. [2020-08-21 22:11:15,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:15,609 INFO L93 Difference]: Finished difference Result 4752 states and 6785 transitions. [2020-08-21 22:11:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:15,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-08-21 22:11:15,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:15,624 INFO L225 Difference]: With dead ends: 4752 [2020-08-21 22:11:15,625 INFO L226 Difference]: Without dead ends: 3159 [2020-08-21 22:11:15,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:15,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-08-21 22:11:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1606. [2020-08-21 22:11:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-21 22:11:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2293 transitions. [2020-08-21 22:11:15,769 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2293 transitions. Word has length 161 [2020-08-21 22:11:15,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:15,769 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2293 transitions. [2020-08-21 22:11:15,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:15,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2293 transitions. [2020-08-21 22:11:15,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-21 22:11:15,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:15,772 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-08-21 22:11:15,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-21 22:11:15,773 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:15,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:15,773 INFO L82 PathProgramCache]: Analyzing trace with hash -179508653, now seen corresponding path program 1 times [2020-08-21 22:11:15,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:15,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807899020] [2020-08-21 22:11:15,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-21 22:11:15,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807899020] [2020-08-21 22:11:15,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:15,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:15,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523501613] [2020-08-21 22:11:15,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:15,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:15,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:15,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:15,856 INFO L87 Difference]: Start difference. First operand 1606 states and 2293 transitions. Second operand 3 states. [2020-08-21 22:11:16,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:16,171 INFO L93 Difference]: Finished difference Result 4792 states and 6845 transitions. [2020-08-21 22:11:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:16,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-08-21 22:11:16,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:16,203 INFO L225 Difference]: With dead ends: 4792 [2020-08-21 22:11:16,204 INFO L226 Difference]: Without dead ends: 3199 [2020-08-21 22:11:16,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-08-21 22:11:16,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3197. [2020-08-21 22:11:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-08-21 22:11:16,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4493 transitions. [2020-08-21 22:11:16,533 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4493 transitions. Word has length 162 [2020-08-21 22:11:16,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:16,534 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 4493 transitions. [2020-08-21 22:11:16,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4493 transitions. [2020-08-21 22:11:16,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-21 22:11:16,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:16,540 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-08-21 22:11:16,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-21 22:11:16,541 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:16,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:16,541 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-08-21 22:11:16,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:16,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147416000] [2020-08-21 22:11:16,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:11:16,603 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:11:16,604 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:11:16,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-21 22:11:16,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:11:16 BoogieIcfgContainer [2020-08-21 22:11:16,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:11:16,689 INFO L168 Benchmark]: Toolchain (without parser) took 15566.11 ms. Allocated memory was 140.0 MB in the beginning and 509.1 MB in the end (delta: 369.1 MB). Free memory was 101.1 MB in the beginning and 437.7 MB in the end (delta: -336.7 MB). Peak memory consumption was 32.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:16,690 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-21 22:11:16,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 551.25 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 177.4 MB in the end (delta: -76.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:16,692 INFO L168 Benchmark]: Boogie Preprocessor took 63.93 ms. Allocated memory is still 203.4 MB. Free memory was 177.4 MB in the beginning and 174.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:16,693 INFO L168 Benchmark]: RCFGBuilder took 922.23 ms. Allocated memory is still 203.4 MB. Free memory was 174.3 MB in the beginning and 117.3 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:16,693 INFO L168 Benchmark]: TraceAbstraction took 14022.39 ms. Allocated memory was 203.4 MB in the beginning and 509.1 MB in the end (delta: 305.7 MB). Free memory was 116.3 MB in the beginning and 437.7 MB in the end (delta: -321.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:11:16,696 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 551.25 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 177.4 MB in the end (delta: -76.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.93 ms. Allocated memory is still 203.4 MB. Free memory was 177.4 MB in the beginning and 174.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 922.23 ms. Allocated memory is still 203.4 MB. Free memory was 174.3 MB in the beginning and 117.3 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14022.39 ms. Allocated memory was 203.4 MB in the beginning and 509.1 MB in the end (delta: 305.7 MB). Free memory was 116.3 MB in the beginning and 437.7 MB in the end (delta: -321.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L702] int s ; [L703] int tmp ; [L707] s = 8464 [L708] CALL ssl3_accept(s) [L12] int s__info_callback = __VERIFIER_nondet_int() ; [L13] int s__in_handshake = __VERIFIER_nondet_int() ; [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int() ; [L18] int s__type ; [L19] int s__init_num ; [L20] int s__hit = __VERIFIER_nondet_int() ; [L21] int s__rwstate ; [L22] int s__init_buf___0 = 1; [L23] int s__debug = __VERIFIER_nondet_int() ; [L24] int s__shutdown ; [L25] int s__cert = __VERIFIER_nondet_int() ; [L26] int s__options = __VERIFIER_nondet_int() ; [L27] int s__verify_mode = __VERIFIER_nondet_int() ; [L28] int s__session__peer = __VERIFIER_nondet_int() ; [L29] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L30] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L34] int s__s3__tmp__cert_request ; [L35] int s__s3__tmp__reuse_message ; [L36] int s__s3__tmp__use_rsa_tmp ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_cipher__algo_strength ; [L41] int s__session__cipher ; [L42] int buf ; [L43] unsigned long l ; [L44] unsigned long Time ; [L45] unsigned long tmp ; [L46] int cb ; [L47] long num1 = __VERIFIER_nondet_long() ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int got_new_session ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 ; [L60] long tmp___8 = __VERIFIER_nondet_long() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int tmp___10 = __VERIFIER_nondet_int() ; [L63] int blastFlag ; [L64] int __cil_tmp55 ; [L65] unsigned long __cil_tmp56 ; [L66] unsigned long __cil_tmp57 ; [L67] unsigned long __cil_tmp58 ; [L68] unsigned long __cil_tmp59 ; [L69] int __cil_tmp60 ; [L70] unsigned long __cil_tmp61 = __VERIFIER_nondet_ulong() ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] __cil_tmp56 = 256345 [L307] skip = 1 [L318] s__state = 8528 [L319] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L323] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L324] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L326] __cil_tmp57 = (unsigned long )s__options [L327] COND TRUE __cil_tmp57 + 2097152UL [L328] s__s3__tmp__use_rsa_tmp = 1 [L333] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L361] ret = __VERIFIER_nondet_int() [L362] COND FALSE !(blastFlag == 3) [L365] COND FALSE !(ret <= 0) [L382] s__state = 8544 [L383] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND TRUE s__state == 8544 [L387] COND TRUE s__verify_mode + 1 [L388] COND TRUE s__session__peer != 0 [L389] COND TRUE s__verify_mode + 4 [L390] s__verify_mode = 123 [L391] skip = 1 [L392] s__s3__tmp__cert_request = 0 [L393] s__state = 8560 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND TRUE s__state == 8560 [L437] ret = __VERIFIER_nondet_int() [L438] COND FALSE !(ret <= 0) [L441] s__s3__tmp__next_state___0 = 8576 [L442] s__state = 8448 [L443] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND TRUE ! s__s3__tmp__reuse_message [L653] COND TRUE ! skip [L654] COND TRUE state == 8560 [L655] COND TRUE s__state == 8448 [L656] COND TRUE s__verify_mode != -1 [L657] COND TRUE s__verify_mode != -2 [L658] COND TRUE __cil_tmp61 != 9021 [L659] COND TRUE __cil_tmp58 != 4294967294 [L660] COND TRUE blastFlag != 4 [L661] COND TRUE tmp___7 != 1024 [L697] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.8s, OverallIterations: 35, TraceHistogramMax: 6, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7259 SDtfs, 16112 SDslu, 7753 SDs, 0 SdLazy, 4949 SolverSat, 1408 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3197occurred in iteration=34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 34 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 3391 NumberOfCodeBlocks, 3391 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 3195 ConstructedInterpolants, 0 QuantifiedInterpolants, 632376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 2752/2752 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...