/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b3_o5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:13:16,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:13:16,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:13:16,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:13:16,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:13:16,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:13:16,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:13:16,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:13:16,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:13:16,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:13:16,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:13:16,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:13:16,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:13:16,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:13:16,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:13:16,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:13:16,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:13:16,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:13:16,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:13:16,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:13:16,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:13:16,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:13:16,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:13:16,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:13:16,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:13:16,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:13:16,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:13:16,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:13:16,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:13:16,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:13:16,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:13:16,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:13:16,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:13:16,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:13:16,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:13:16,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:13:16,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:13:16,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:13:16,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:13:16,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:13:16,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:13:16,159 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 [2020-08-22 02:13:16,201 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:13:16,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:13:16,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:13:16,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:13:16,203 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:13:16,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:13:16,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:13:16,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:13:16,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:13:16,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:13:16,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:13:16,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:13:16,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:13:16,205 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:13:16,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:13:16,205 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:13:16,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:13:16,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:13:16,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:13:16,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:13:16,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:13:16,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:13:16,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:13:16,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:13:16,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:13:16,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:13:16,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:13:16,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:13:16,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:13:16,208 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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:13:16,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:13:16,530 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:13:16,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:13:16,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:13:16,537 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:13:16,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b3_o5.c [2020-08-22 02:13:16,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc26a843d/17ddd9ad042846a4a6fce80cc7d94b2d/FLAGe747a85b6 [2020-08-22 02:13:17,133 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:13:17,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b3_o5.c [2020-08-22 02:13:17,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc26a843d/17ddd9ad042846a4a6fce80cc7d94b2d/FLAGe747a85b6 [2020-08-22 02:13:17,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc26a843d/17ddd9ad042846a4a6fce80cc7d94b2d [2020-08-22 02:13:17,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:13:17,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:13:17,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:13:17,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:13:17,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:13:17,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:13:17" (1/1) ... [2020-08-22 02:13:17,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75009653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:13:17, skipping insertion in model container [2020-08-22 02:13:17,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:13:17" (1/1) ... [2020-08-22 02:13:17,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:13:17,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:13:17,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:13:17,840 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:13:17,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:13:17,874 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:13:17,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:13:17 WrapperNode [2020-08-22 02:13:17,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:13:17,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:13:17,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:13:17,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:13:17,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:13:17" (1/1) ... [2020-08-22 02:13:17,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:13:17" (1/1) ... [2020-08-22 02:13:17,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:13:17" (1/1) ... [2020-08-22 02:13:17,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:13:17" (1/1) ... [2020-08-22 02:13:18,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:13:17" (1/1) ... [2020-08-22 02:13:18,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:13:17" (1/1) ... [2020-08-22 02:13:18,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:13:17" (1/1) ... [2020-08-22 02:13:18,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:13:18,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:13:18,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:13:18,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:13:18,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:13:17" (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 [2020-08-22 02:13:18,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:13:18,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:13:18,137 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-22 02:13:18,138 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-08-22 02:13:18,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:13:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-22 02:13:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:13:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-22 02:13:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-08-22 02:13:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:13:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:13:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:13:18,348 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:13:18,349 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 02:13:18,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:13:18 BoogieIcfgContainer [2020-08-22 02:13:18,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:13:18,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:13:18,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:13:18,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:13:18,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:13:17" (1/3) ... [2020-08-22 02:13:18,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136b3e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:13:18, skipping insertion in model container [2020-08-22 02:13:18,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:13:17" (2/3) ... [2020-08-22 02:13:18,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136b3e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:13:18, skipping insertion in model container [2020-08-22 02:13:18,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:13:18" (3/3) ... [2020-08-22 02:13:18,364 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b3_o5.c [2020-08-22 02:13:18,375 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:13:18,384 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:13:18,400 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:13:18,436 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:13:18,436 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:13:18,437 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:13:18,437 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:13:18,437 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:13:18,437 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:13:18,438 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:13:18,438 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:13:18,466 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-22 02:13:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 02:13:18,474 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:13:18,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:13:18,476 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:13:18,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:13:18,485 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2020-08-22 02:13:18,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:13:18,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866053702] [2020-08-22 02:13:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:13:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:18,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:13:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:18,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 02:13:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:13:18,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866053702] [2020-08-22 02:13:18,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:13:18,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:13:18,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264120484] [2020-08-22 02:13:18,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:13:18,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:13:18,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:13:18,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:13:18,914 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-08-22 02:13:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:13:18,980 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-22 02:13:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:13:18,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 02:13:18,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:13:18,993 INFO L225 Difference]: With dead ends: 40 [2020-08-22 02:13:18,993 INFO L226 Difference]: Without dead ends: 26 [2020-08-22 02:13:18,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:13:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-22 02:13:19,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-22 02:13:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-22 02:13:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-22 02:13:19,041 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2020-08-22 02:13:19,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:13:19,042 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-22 02:13:19,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:13:19,042 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-22 02:13:19,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 02:13:19,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:13:19,044 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] [2020-08-22 02:13:19,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:13:19,045 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:13:19,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:13:19,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2020-08-22 02:13:19,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:13:19,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405053828] [2020-08-22 02:13:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:13:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:13:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 02:13:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:13:19,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405053828] [2020-08-22 02:13:19,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:13:19,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:13:19,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837360887] [2020-08-22 02:13:19,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:13:19,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:13:19,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:13:19,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:13:19,258 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2020-08-22 02:13:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:13:19,293 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-08-22 02:13:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:13:19,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-22 02:13:19,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:13:19,296 INFO L225 Difference]: With dead ends: 32 [2020-08-22 02:13:19,296 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 02:13:19,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:13:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 02:13:19,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-08-22 02:13:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-22 02:13:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-22 02:13:19,305 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 20 [2020-08-22 02:13:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:13:19,306 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-22 02:13:19,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:13:19,307 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-22 02:13:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 02:13:19,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:13:19,308 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] [2020-08-22 02:13:19,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:13:19,309 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:13:19,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:13:19,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2020-08-22 02:13:19,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:13:19,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382970289] [2020-08-22 02:13:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:13:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:13:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 02:13:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:13:19,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382970289] [2020-08-22 02:13:19,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:13:19,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:13:19,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561267576] [2020-08-22 02:13:19,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:13:19,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:13:19,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:13:19,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:13:19,508 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 8 states. [2020-08-22 02:13:19,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:13:19,584 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-08-22 02:13:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 02:13:19,585 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-08-22 02:13:19,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:13:19,586 INFO L225 Difference]: With dead ends: 48 [2020-08-22 02:13:19,587 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 02:13:19,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:13:19,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 02:13:19,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-22 02:13:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 02:13:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-08-22 02:13:19,597 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2020-08-22 02:13:19,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:13:19,598 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-08-22 02:13:19,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:13:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-08-22 02:13:19,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 02:13:19,599 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:13:19,600 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 02:13:19,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:13:19,600 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:13:19,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:13:19,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1451784300, now seen corresponding path program 1 times [2020-08-22 02:13:19,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:13:19,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716622862] [2020-08-22 02:13:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:13:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:13:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 02:13:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 02:13:19,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716622862] [2020-08-22 02:13:19,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:13:19,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:13:19,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054137469] [2020-08-22 02:13:19,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:13:19,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:13:19,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:13:19,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:13:19,833 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-08-22 02:13:19,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:13:19,869 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-08-22 02:13:19,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:13:19,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-22 02:13:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:13:19,874 INFO L225 Difference]: With dead ends: 50 [2020-08-22 02:13:19,875 INFO L226 Difference]: Without dead ends: 36 [2020-08-22 02:13:19,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:13:19,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-22 02:13:19,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-08-22 02:13:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-22 02:13:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-08-22 02:13:19,897 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2020-08-22 02:13:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:13:19,897 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-08-22 02:13:19,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:13:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-08-22 02:13:19,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 02:13:19,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:13:19,899 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 02:13:19,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:13:19,900 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:13:19,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:13:19,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1255270795, now seen corresponding path program 1 times [2020-08-22 02:13:19,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:13:19,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160203206] [2020-08-22 02:13:19,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:13:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:13:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:19,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 02:13:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:20,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:20,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 02:13:20,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160203206] [2020-08-22 02:13:20,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:13:20,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 02:13:20,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984751632] [2020-08-22 02:13:20,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:13:20,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:13:20,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:13:20,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:13:20,129 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 11 states. [2020-08-22 02:13:20,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:13:20,261 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-08-22 02:13:20,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 02:13:20,262 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-08-22 02:13:20,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:13:20,264 INFO L225 Difference]: With dead ends: 64 [2020-08-22 02:13:20,264 INFO L226 Difference]: Without dead ends: 44 [2020-08-22 02:13:20,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:13:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-22 02:13:20,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-08-22 02:13:20,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 02:13:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-08-22 02:13:20,274 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2020-08-22 02:13:20,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:13:20,274 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-08-22 02:13:20,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:13:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-08-22 02:13:20,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 02:13:20,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:13:20,276 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:13:20,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:13:20,277 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:13:20,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:13:20,277 INFO L82 PathProgramCache]: Analyzing trace with hash 709659056, now seen corresponding path program 1 times [2020-08-22 02:13:20,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:13:20,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516146527] [2020-08-22 02:13:20,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:13:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:20,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:13:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:20,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 02:13:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:20,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:20,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 02:13:20,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516146527] [2020-08-22 02:13:20,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:13:20,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 02:13:20,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010713017] [2020-08-22 02:13:20,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 02:13:20,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:13:20,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 02:13:20,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:13:20,607 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 14 states. [2020-08-22 02:13:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:13:20,816 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-08-22 02:13:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:13:20,817 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-08-22 02:13:20,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:13:20,819 INFO L225 Difference]: With dead ends: 74 [2020-08-22 02:13:20,819 INFO L226 Difference]: Without dead ends: 54 [2020-08-22 02:13:20,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-22 02:13:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-22 02:13:20,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2020-08-22 02:13:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-22 02:13:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-08-22 02:13:20,829 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 34 [2020-08-22 02:13:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:13:20,829 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-08-22 02:13:20,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 02:13:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-08-22 02:13:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 02:13:20,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:13:20,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:13:20,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:13:20,832 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:13:20,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:13:20,833 INFO L82 PathProgramCache]: Analyzing trace with hash -797786941, now seen corresponding path program 2 times [2020-08-22 02:13:20,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:13:20,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794267008] [2020-08-22 02:13:20,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:13:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:20,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:13:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:20,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 02:13:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:20,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:20,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:21,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-22 02:13:21,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794267008] [2020-08-22 02:13:21,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:13:21,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 02:13:21,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658896060] [2020-08-22 02:13:21,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 02:13:21,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:13:21,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 02:13:21,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:13:21,208 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 14 states. [2020-08-22 02:13:21,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:13:21,388 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-08-22 02:13:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:13:21,389 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-08-22 02:13:21,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:13:21,391 INFO L225 Difference]: With dead ends: 78 [2020-08-22 02:13:21,391 INFO L226 Difference]: Without dead ends: 60 [2020-08-22 02:13:21,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-22 02:13:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-22 02:13:21,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-08-22 02:13:21,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 02:13:21,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-08-22 02:13:21,401 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 41 [2020-08-22 02:13:21,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:13:21,401 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-08-22 02:13:21,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 02:13:21,402 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-08-22 02:13:21,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 02:13:21,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:13:21,404 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 02:13:21,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:13:21,404 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:13:21,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:13:21,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1496626328, now seen corresponding path program 2 times [2020-08-22 02:13:21,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:13:21,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025629749] [2020-08-22 02:13:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:13:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:21,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:13:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:21,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 02:13:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:21,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:21,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:21,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:21,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:21,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:13:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:13:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 02:13:21,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025629749] [2020-08-22 02:13:21,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:13:21,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 02:13:21,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375849366] [2020-08-22 02:13:21,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 02:13:21,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:13:21,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 02:13:21,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:13:21,798 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 14 states. [2020-08-22 02:13:21,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:13:21,950 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2020-08-22 02:13:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:13:21,951 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-08-22 02:13:21,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:13:21,952 INFO L225 Difference]: With dead ends: 66 [2020-08-22 02:13:21,952 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 02:13:21,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-22 02:13:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 02:13:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 02:13:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 02:13:21,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 02:13:21,956 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-08-22 02:13:21,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:13:21,956 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 02:13:21,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 02:13:21,956 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 02:13:21,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 02:13:21,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:13:21,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 02:13:21,987 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 02:13:21,987 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 02:13:21,987 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-22 02:13:21,988 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-08-22 02:13:21,988 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-08-22 02:13:21,988 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-08-22 02:13:21,988 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-08-22 02:13:21,988 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-08-22 02:13:21,988 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-08-22 02:13:21,989 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 02:13:21,989 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 02:13:21,989 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 02:13:21,989 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 02:13:21,989 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-08-22 02:13:21,989 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-08-22 02:13:21,989 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-08-22 02:13:21,989 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-08-22 02:13:21,990 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-08-22 02:13:21,990 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-08-22 02:13:21,990 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-08-22 02:13:21,990 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-08-22 02:13:21,990 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-08-22 02:13:21,990 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-08-22 02:13:21,991 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-08-22 02:13:21,991 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-08-22 02:13:21,991 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-22 02:13:21,991 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-08-22 02:13:21,991 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-08-22 02:13:21,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:13:21 BoogieIcfgContainer [2020-08-22 02:13:21,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:13:22,000 INFO L168 Benchmark]: Toolchain (without parser) took 4428.47 ms. Allocated memory was 139.5 MB in the beginning and 244.8 MB in the end (delta: 105.4 MB). Free memory was 102.0 MB in the beginning and 214.5 MB in the end (delta: -112.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:13:22,001 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 02:13:22,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.88 ms. Allocated memory is still 139.5 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-22 02:13:22,003 INFO L168 Benchmark]: Boogie Preprocessor took 184.36 ms. Allocated memory was 139.5 MB in the beginning and 206.6 MB in the end (delta: 67.1 MB). Free memory was 92.1 MB in the beginning and 185.6 MB in the end (delta: -93.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:13:22,003 INFO L168 Benchmark]: RCFGBuilder took 293.29 ms. Allocated memory is still 206.6 MB. Free memory was 185.2 MB in the beginning and 172.8 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:13:22,004 INFO L168 Benchmark]: TraceAbstraction took 3642.89 ms. Allocated memory was 206.6 MB in the beginning and 244.8 MB in the end (delta: 38.3 MB). Free memory was 172.1 MB in the beginning and 214.5 MB in the end (delta: -42.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:13:22,008 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 302.88 ms. Allocated memory is still 139.5 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 184.36 ms. Allocated memory was 139.5 MB in the beginning and 206.6 MB in the end (delta: 67.1 MB). Free memory was 92.1 MB in the beginning and 185.6 MB in the end (delta: -93.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 293.29 ms. Allocated memory is still 206.6 MB. Free memory was 185.2 MB in the beginning and 172.8 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3642.89 ms. Allocated memory was 206.6 MB in the beginning and 244.8 MB in the end (delta: 38.3 MB). Free memory was 172.1 MB in the beginning and 214.5 MB in the end (delta: -42.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 245 SDtfs, 32 SDslu, 1737 SDs, 0 SdLazy, 450 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 30 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 23450 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 53/77 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 correct! Received shutdown request...