/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=0.8 --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/fibo_2calls_8-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:24:23,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:24:23,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:24:23,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:24:23,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:24:23,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:24:23,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:24:23,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:24:23,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:24:23,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:24:23,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:24:23,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:24:23,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:24:23,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:24:23,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:24:23,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:24:23,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:24:23,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:24:23,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:24:23,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:24:23,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:24:23,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:24:23,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:24:23,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:24:23,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:24:23,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:24:23,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:24:23,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:24:23,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:24:23,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:24:23,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:24:23,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:24:23,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:24:23,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:24:23,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:24:23,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:24:23,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:24:23,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:24:23,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:24:23,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:24:23,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:24:23,217 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 01:24:23,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:24:23,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:24:23,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:24:23,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:24:23,242 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:24:23,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:24:23,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:24:23,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:24:23,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:24:23,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:24:23,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:24:23,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:24:23,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:24:23,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:24:23,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:24:23,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:24:23,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:24:23,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:24:23,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:24:23,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:24:23,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:24:23,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:24:23,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:24:23,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:24:23,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:24:23,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:24:23,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:24:23,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:24:23,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:24:23,247 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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-08-22 01:24:23,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:24:23,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:24:23,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:24:23,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:24:23,634 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:24:23,635 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-08-22 01:24:23,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc0146b01/78659a7c76d14c688703c0b57233f20e/FLAGe3d7ddc72 [2020-08-22 01:24:24,144 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:24:24,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-08-22 01:24:24,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc0146b01/78659a7c76d14c688703c0b57233f20e/FLAGe3d7ddc72 [2020-08-22 01:24:24,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc0146b01/78659a7c76d14c688703c0b57233f20e [2020-08-22 01:24:24,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:24:24,595 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:24:24,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:24:24,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:24:24,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:24:24,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:24:24" (1/1) ... [2020-08-22 01:24:24,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445b6256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:24, skipping insertion in model container [2020-08-22 01:24:24,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:24:24" (1/1) ... [2020-08-22 01:24:24,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:24:24,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:24:24,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:24:24,847 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:24:24,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:24:24,886 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:24:24,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:24 WrapperNode [2020-08-22 01:24:24,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:24:24,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:24:24,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:24:24,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:24:24,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:24" (1/1) ... [2020-08-22 01:24:24,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:24" (1/1) ... [2020-08-22 01:24:25,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:24" (1/1) ... [2020-08-22 01:24:25,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:24" (1/1) ... [2020-08-22 01:24:25,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:24" (1/1) ... [2020-08-22 01:24:25,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:24" (1/1) ... [2020-08-22 01:24:25,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:24" (1/1) ... [2020-08-22 01:24:25,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:24:25,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:24:25,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:24:25,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:24:25,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:24" (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 01:24:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:24:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:24:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-08-22 01:24:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-08-22 01:24:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:24:25,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:24:25,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:24:25,132 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-08-22 01:24:25,132 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-08-22 01:24:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:24:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:24:25,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:24:25,369 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:24:25,370 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 01:24:25,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:24:25 BoogieIcfgContainer [2020-08-22 01:24:25,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:24:25,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:24:25,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:24:25,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:24:25,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:24:24" (1/3) ... [2020-08-22 01:24:25,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2616ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:24:25, skipping insertion in model container [2020-08-22 01:24:25,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:24" (2/3) ... [2020-08-22 01:24:25,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2616ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:24:25, skipping insertion in model container [2020-08-22 01:24:25,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:24:25" (3/3) ... [2020-08-22 01:24:25,383 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2020-08-22 01:24:25,395 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:24:25,402 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:24:25,419 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:24:25,455 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:24:25,459 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:24:25,459 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:24:25,460 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:24:25,460 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:24:25,460 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:24:25,460 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:24:25,460 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:24:25,506 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-22 01:24:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 01:24:25,522 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:25,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:25,527 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:25,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:25,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-08-22 01:24:25,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:25,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345722332] [2020-08-22 01:24:25,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,784 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 01:24:25,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345722332] [2020-08-22 01:24:25,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:24:25,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:24:25,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880388505] [2020-08-22 01:24:25,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:24:25,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:25,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:24:25,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:24:25,812 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-08-22 01:24:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:25,915 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-22 01:24:25,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:24:25,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 01:24:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:25,928 INFO L225 Difference]: With dead ends: 44 [2020-08-22 01:24:25,928 INFO L226 Difference]: Without dead ends: 30 [2020-08-22 01:24:25,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:24:25,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-22 01:24:25,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-22 01:24:25,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 01:24:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-22 01:24:25,983 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-08-22 01:24:25,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:25,984 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-22 01:24:25,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:24:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-22 01:24:25,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 01:24:25,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:25,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:25,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:24:25,987 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:25,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:25,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-08-22 01:24:25,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:25,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907244019] [2020-08-22 01:24:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,062 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 01:24:26,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907244019] [2020-08-22 01:24:26,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:24:26,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:24:26,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891903251] [2020-08-22 01:24:26,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:24:26,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:26,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:24:26,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:24:26,067 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-08-22 01:24:26,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:26,155 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-08-22 01:24:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:24:26,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 01:24:26,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:26,158 INFO L225 Difference]: With dead ends: 36 [2020-08-22 01:24:26,158 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 01:24:26,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:24:26,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 01:24:26,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-22 01:24:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 01:24:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-22 01:24:26,170 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-08-22 01:24:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:26,170 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-22 01:24:26,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:24:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-22 01:24:26,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 01:24:26,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:26,173 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:26,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:24:26,173 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:26,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-08-22 01:24:26,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:26,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948425543] [2020-08-22 01:24:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:24:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 01:24:26,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948425543] [2020-08-22 01:24:26,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:26,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 01:24:26,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611409600] [2020-08-22 01:24:26,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:24:26,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:26,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:24:26,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:24:26,312 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2020-08-22 01:24:26,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:26,410 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-08-22 01:24:26,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:24:26,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-08-22 01:24:26,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:26,413 INFO L225 Difference]: With dead ends: 58 [2020-08-22 01:24:26,413 INFO L226 Difference]: Without dead ends: 34 [2020-08-22 01:24:26,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:24:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-22 01:24:26,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-08-22 01:24:26,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 01:24:26,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-08-22 01:24:26,425 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-08-22 01:24:26,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:26,425 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-08-22 01:24:26,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:24:26,426 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-08-22 01:24:26,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 01:24:26,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:26,428 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 01:24:26,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:24:26,429 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:26,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:26,429 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-08-22 01:24:26,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:26,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308867840] [2020-08-22 01:24:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 01:24:26,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308867840] [2020-08-22 01:24:26,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:26,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 01:24:26,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709606638] [2020-08-22 01:24:26,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:24:26,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:26,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:24:26,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:24:26,557 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2020-08-22 01:24:26,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:26,764 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2020-08-22 01:24:26,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:24:26,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-22 01:24:26,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:26,768 INFO L225 Difference]: With dead ends: 54 [2020-08-22 01:24:26,768 INFO L226 Difference]: Without dead ends: 50 [2020-08-22 01:24:26,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:24:26,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-22 01:24:26,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-08-22 01:24:26,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 01:24:26,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-08-22 01:24:26,783 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 27 [2020-08-22 01:24:26,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:26,783 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-08-22 01:24:26,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:24:26,783 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-08-22 01:24:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-22 01:24:26,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:26,786 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 01:24:26,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:24:26,786 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:26,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:26,787 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-08-22 01:24:26,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:26,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278344388] [2020-08-22 01:24:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:24:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:24:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 01:24:26,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278344388] [2020-08-22 01:24:26,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:26,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 01:24:26,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979539842] [2020-08-22 01:24:26,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:24:26,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:26,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:24:26,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:24:26,940 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states. [2020-08-22 01:24:27,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:27,037 INFO L93 Difference]: Finished difference Result 94 states and 142 transitions. [2020-08-22 01:24:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 01:24:27,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-08-22 01:24:27,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:27,040 INFO L225 Difference]: With dead ends: 94 [2020-08-22 01:24:27,040 INFO L226 Difference]: Without dead ends: 52 [2020-08-22 01:24:27,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:24:27,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-22 01:24:27,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-08-22 01:24:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-22 01:24:27,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2020-08-22 01:24:27,053 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 39 [2020-08-22 01:24:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:27,054 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2020-08-22 01:24:27,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:24:27,054 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2020-08-22 01:24:27,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 01:24:27,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:27,057 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 01:24:27,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:24:27,057 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:27,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:27,058 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-08-22 01:24:27,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:27,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646909626] [2020-08-22 01:24:27,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 01:24:27,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646909626] [2020-08-22 01:24:27,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:27,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 01:24:27,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390168413] [2020-08-22 01:24:27,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:24:27,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:27,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:24:27,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:24:27,252 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand 8 states. [2020-08-22 01:24:27,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:27,364 INFO L93 Difference]: Finished difference Result 103 states and 158 transitions. [2020-08-22 01:24:27,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 01:24:27,365 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-22 01:24:27,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:27,366 INFO L225 Difference]: With dead ends: 103 [2020-08-22 01:24:27,366 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 01:24:27,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:24:27,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 01:24:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-08-22 01:24:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 01:24:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2020-08-22 01:24:27,380 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 40 [2020-08-22 01:24:27,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:27,380 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2020-08-22 01:24:27,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:24:27,381 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2020-08-22 01:24:27,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 01:24:27,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:27,384 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 01:24:27,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:24:27,384 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:27,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:27,385 INFO L82 PathProgramCache]: Analyzing trace with hash 208191613, now seen corresponding path program 1 times [2020-08-22 01:24:27,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:27,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682183742] [2020-08-22 01:24:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 01:24:27,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682183742] [2020-08-22 01:24:27,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:27,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 01:24:27,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825193317] [2020-08-22 01:24:27,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:24:27,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:27,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:24:27,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:24:27,498 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand 8 states. [2020-08-22 01:24:27,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:27,690 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-08-22 01:24:27,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:24:27,691 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-08-22 01:24:27,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:27,693 INFO L225 Difference]: With dead ends: 86 [2020-08-22 01:24:27,693 INFO L226 Difference]: Without dead ends: 82 [2020-08-22 01:24:27,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:24:27,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-22 01:24:27,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-08-22 01:24:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-22 01:24:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 118 transitions. [2020-08-22 01:24:27,728 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 118 transitions. Word has length 41 [2020-08-22 01:24:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:27,728 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 118 transitions. [2020-08-22 01:24:27,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:24:27,729 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-08-22 01:24:27,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 01:24:27,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:27,732 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-08-22 01:24:27,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:24:27,732 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:27,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:27,733 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2020-08-22 01:24:27,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:27,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400487742] [2020-08-22 01:24:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:24:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 01:24:27,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400487742] [2020-08-22 01:24:27,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:27,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 01:24:27,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14363626] [2020-08-22 01:24:27,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:24:27,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:27,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:24:27,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:24:27,873 INFO L87 Difference]: Start difference. First operand 79 states and 118 transitions. Second operand 8 states. [2020-08-22 01:24:28,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:28,003 INFO L93 Difference]: Finished difference Result 167 states and 288 transitions. [2020-08-22 01:24:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:24:28,004 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-08-22 01:24:28,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:28,006 INFO L225 Difference]: With dead ends: 167 [2020-08-22 01:24:28,006 INFO L226 Difference]: Without dead ends: 94 [2020-08-22 01:24:28,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:24:28,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-08-22 01:24:28,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2020-08-22 01:24:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-22 01:24:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 134 transitions. [2020-08-22 01:24:28,029 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 134 transitions. Word has length 54 [2020-08-22 01:24:28,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:28,029 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 134 transitions. [2020-08-22 01:24:28,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:24:28,030 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 134 transitions. [2020-08-22 01:24:28,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-22 01:24:28,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:28,032 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:28,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:24:28,033 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:28,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:28,033 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times [2020-08-22 01:24:28,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:28,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928237766] [2020-08-22 01:24:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 01:24:28,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928237766] [2020-08-22 01:24:28,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:28,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:24:28,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579234091] [2020-08-22 01:24:28,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:24:28,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:28,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:24:28,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:24:28,183 INFO L87 Difference]: Start difference. First operand 88 states and 134 transitions. Second operand 10 states. [2020-08-22 01:24:28,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:28,500 INFO L93 Difference]: Finished difference Result 188 states and 331 transitions. [2020-08-22 01:24:28,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 01:24:28,501 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-08-22 01:24:28,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:28,503 INFO L225 Difference]: With dead ends: 188 [2020-08-22 01:24:28,504 INFO L226 Difference]: Without dead ends: 109 [2020-08-22 01:24:28,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:24:28,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-22 01:24:28,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2020-08-22 01:24:28,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 01:24:28,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 158 transitions. [2020-08-22 01:24:28,522 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 158 transitions. Word has length 55 [2020-08-22 01:24:28,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:28,523 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 158 transitions. [2020-08-22 01:24:28,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:24:28,523 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 158 transitions. [2020-08-22 01:24:28,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-22 01:24:28,526 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:28,526 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 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] [2020-08-22 01:24:28,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:24:28,527 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:28,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:28,527 INFO L82 PathProgramCache]: Analyzing trace with hash -908952008, now seen corresponding path program 2 times [2020-08-22 01:24:28,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:28,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621061466] [2020-08-22 01:24:28,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-08-22 01:24:28,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621061466] [2020-08-22 01:24:28,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:28,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 01:24:28,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083620445] [2020-08-22 01:24:28,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:24:28,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:28,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:24:28,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:24:28,829 INFO L87 Difference]: Start difference. First operand 100 states and 158 transitions. Second operand 12 states. [2020-08-22 01:24:29,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:29,237 INFO L93 Difference]: Finished difference Result 199 states and 354 transitions. [2020-08-22 01:24:29,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 01:24:29,237 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-08-22 01:24:29,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:29,239 INFO L225 Difference]: With dead ends: 199 [2020-08-22 01:24:29,239 INFO L226 Difference]: Without dead ends: 86 [2020-08-22 01:24:29,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-08-22 01:24:29,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-22 01:24:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2020-08-22 01:24:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-22 01:24:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2020-08-22 01:24:29,259 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 82 [2020-08-22 01:24:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:29,260 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2020-08-22 01:24:29,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:24:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2020-08-22 01:24:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-22 01:24:29,262 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:29,262 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:29,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:24:29,262 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:29,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:29,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2119203654, now seen corresponding path program 2 times [2020-08-22 01:24:29,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:29,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107131150] [2020-08-22 01:24:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 01:24:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-08-22 01:24:29,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107131150] [2020-08-22 01:24:29,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:29,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:24:29,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473618833] [2020-08-22 01:24:29,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:24:29,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:29,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:24:29,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:24:29,534 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand 10 states. [2020-08-22 01:24:29,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:29,725 INFO L93 Difference]: Finished difference Result 142 states and 204 transitions. [2020-08-22 01:24:29,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:24:29,726 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2020-08-22 01:24:29,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:29,727 INFO L225 Difference]: With dead ends: 142 [2020-08-22 01:24:29,727 INFO L226 Difference]: Without dead ends: 78 [2020-08-22 01:24:29,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:24:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-22 01:24:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-22 01:24:29,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 01:24:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-08-22 01:24:29,738 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 110 [2020-08-22 01:24:29,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:29,738 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-08-22 01:24:29,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:24:29,739 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-08-22 01:24:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-22 01:24:29,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:29,740 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 13, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:29,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 01:24:29,741 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:29,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:29,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1263382818, now seen corresponding path program 3 times [2020-08-22 01:24:29,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:29,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239258985] [2020-08-22 01:24:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 01:24:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 01:24:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 01:24:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 133 proven. 373 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2020-08-22 01:24:30,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239258985] [2020-08-22 01:24:30,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:30,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 01:24:30,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193776863] [2020-08-22 01:24:30,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 01:24:30,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:30,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 01:24:30,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:24:30,393 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 15 states. [2020-08-22 01:24:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:31,006 INFO L93 Difference]: Finished difference Result 184 states and 282 transitions. [2020-08-22 01:24:31,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 01:24:31,006 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 192 [2020-08-22 01:24:31,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:31,009 INFO L225 Difference]: With dead ends: 184 [2020-08-22 01:24:31,009 INFO L226 Difference]: Without dead ends: 111 [2020-08-22 01:24:31,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2020-08-22 01:24:31,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-22 01:24:31,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-08-22 01:24:31,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-22 01:24:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 133 transitions. [2020-08-22 01:24:31,025 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 133 transitions. Word has length 192 [2020-08-22 01:24:31,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:31,026 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 133 transitions. [2020-08-22 01:24:31,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 01:24:31,026 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 133 transitions. [2020-08-22 01:24:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 01:24:31,031 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:31,031 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:31,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 01:24:31,031 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:31,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:31,032 INFO L82 PathProgramCache]: Analyzing trace with hash -2102107778, now seen corresponding path program 1 times [2020-08-22 01:24:31,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:31,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700055528] [2020-08-22 01:24:31,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 01:24:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 109 proven. 85 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-08-22 01:24:31,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700055528] [2020-08-22 01:24:31,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:31,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 01:24:31,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161027684] [2020-08-22 01:24:31,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:24:31,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:31,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:24:31,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:24:31,351 INFO L87 Difference]: Start difference. First operand 99 states and 133 transitions. Second operand 11 states. [2020-08-22 01:24:31,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:31,634 INFO L93 Difference]: Finished difference Result 188 states and 266 transitions. [2020-08-22 01:24:31,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:24:31,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-22 01:24:31,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:31,637 INFO L225 Difference]: With dead ends: 188 [2020-08-22 01:24:31,637 INFO L226 Difference]: Without dead ends: 101 [2020-08-22 01:24:31,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-08-22 01:24:31,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-08-22 01:24:31,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2020-08-22 01:24:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-22 01:24:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-08-22 01:24:31,646 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 136 [2020-08-22 01:24:31,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:31,647 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-08-22 01:24:31,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:24:31,647 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-08-22 01:24:31,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 01:24:31,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:31,649 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:31,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 01:24:31,649 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:31,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:31,650 INFO L82 PathProgramCache]: Analyzing trace with hash 677703633, now seen corresponding path program 2 times [2020-08-22 01:24:31,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:31,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768406687] [2020-08-22 01:24:31,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 01:24:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 138 proven. 250 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2020-08-22 01:24:32,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768406687] [2020-08-22 01:24:32,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:32,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 01:24:32,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483820123] [2020-08-22 01:24:32,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 01:24:32,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:32,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 01:24:32,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:24:32,152 INFO L87 Difference]: Start difference. First operand 98 states and 130 transitions. Second operand 14 states. [2020-08-22 01:24:32,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:32,843 INFO L93 Difference]: Finished difference Result 224 states and 343 transitions. [2020-08-22 01:24:32,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 01:24:32,844 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 177 [2020-08-22 01:24:32,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:32,846 INFO L225 Difference]: With dead ends: 224 [2020-08-22 01:24:32,846 INFO L226 Difference]: Without dead ends: 131 [2020-08-22 01:24:32,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2020-08-22 01:24:32,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-22 01:24:32,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2020-08-22 01:24:32,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 01:24:32,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 154 transitions. [2020-08-22 01:24:32,859 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 154 transitions. Word has length 177 [2020-08-22 01:24:32,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:32,860 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 154 transitions. [2020-08-22 01:24:32,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 01:24:32,860 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 154 transitions. [2020-08-22 01:24:32,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 01:24:32,863 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:32,863 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:32,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 01:24:32,863 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:32,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:32,864 INFO L82 PathProgramCache]: Analyzing trace with hash 307857833, now seen corresponding path program 3 times [2020-08-22 01:24:32,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:32,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551806385] [2020-08-22 01:24:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 45 proven. 260 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2020-08-22 01:24:33,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551806385] [2020-08-22 01:24:33,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:33,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 01:24:33,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283015421] [2020-08-22 01:24:33,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:24:33,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:33,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:24:33,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:24:33,219 INFO L87 Difference]: Start difference. First operand 114 states and 154 transitions. Second operand 11 states. [2020-08-22 01:24:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:33,534 INFO L93 Difference]: Finished difference Result 244 states and 371 transitions. [2020-08-22 01:24:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:24:33,534 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2020-08-22 01:24:33,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:33,538 INFO L225 Difference]: With dead ends: 244 [2020-08-22 01:24:33,538 INFO L226 Difference]: Without dead ends: 240 [2020-08-22 01:24:33,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-08-22 01:24:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-08-22 01:24:33,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 220. [2020-08-22 01:24:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-22 01:24:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 331 transitions. [2020-08-22 01:24:33,563 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 331 transitions. Word has length 177 [2020-08-22 01:24:33,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:33,564 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 331 transitions. [2020-08-22 01:24:33,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:24:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 331 transitions. [2020-08-22 01:24:33,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-08-22 01:24:33,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:33,572 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 26, 26, 22, 21, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 8, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:33,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 01:24:33,573 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:33,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:33,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1635105538, now seen corresponding path program 4 times [2020-08-22 01:24:33,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:33,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233438909] [2020-08-22 01:24:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 01:24:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-08-22 01:24:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 01:24:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4041 backedges. 201 proven. 576 refuted. 0 times theorem prover too weak. 3264 trivial. 0 not checked. [2020-08-22 01:24:34,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233438909] [2020-08-22 01:24:34,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:34,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 01:24:34,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050520644] [2020-08-22 01:24:34,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:24:34,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:34,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:24:34,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:24:34,479 INFO L87 Difference]: Start difference. First operand 220 states and 331 transitions. Second operand 11 states. [2020-08-22 01:24:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:34,721 INFO L93 Difference]: Finished difference Result 429 states and 677 transitions. [2020-08-22 01:24:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 01:24:34,722 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 380 [2020-08-22 01:24:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:34,725 INFO L225 Difference]: With dead ends: 429 [2020-08-22 01:24:34,725 INFO L226 Difference]: Without dead ends: 225 [2020-08-22 01:24:34,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-08-22 01:24:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-22 01:24:34,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2020-08-22 01:24:34,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-08-22 01:24:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 316 transitions. [2020-08-22 01:24:34,743 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 316 transitions. Word has length 380 [2020-08-22 01:24:34,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:34,744 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 316 transitions. [2020-08-22 01:24:34,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:24:34,744 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 316 transitions. [2020-08-22 01:24:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-08-22 01:24:34,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:34,747 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:34,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 01:24:34,748 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:34,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash 657587316, now seen corresponding path program 5 times [2020-08-22 01:24:34,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:34,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472713140] [2020-08-22 01:24:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:34,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 01:24:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 200 proven. 324 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-08-22 01:24:35,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472713140] [2020-08-22 01:24:35,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:35,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 01:24:35,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172517294] [2020-08-22 01:24:35,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 01:24:35,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:35,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 01:24:35,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:24:35,272 INFO L87 Difference]: Start difference. First operand 222 states and 316 transitions. Second operand 14 states. [2020-08-22 01:24:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:35,812 INFO L93 Difference]: Finished difference Result 454 states and 689 transitions. [2020-08-22 01:24:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 01:24:35,813 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 218 [2020-08-22 01:24:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:35,816 INFO L225 Difference]: With dead ends: 454 [2020-08-22 01:24:35,816 INFO L226 Difference]: Without dead ends: 246 [2020-08-22 01:24:35,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2020-08-22 01:24:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-22 01:24:35,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 228. [2020-08-22 01:24:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-22 01:24:35,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 324 transitions. [2020-08-22 01:24:35,835 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 324 transitions. Word has length 218 [2020-08-22 01:24:35,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:35,836 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 324 transitions. [2020-08-22 01:24:35,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 01:24:35,836 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 324 transitions. [2020-08-22 01:24:35,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-08-22 01:24:35,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:35,840 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 17, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:35,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 01:24:35,841 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:35,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:35,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1614185823, now seen corresponding path program 6 times [2020-08-22 01:24:35,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:35,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233701280] [2020-08-22 01:24:35,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:35,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 01:24:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 94 proven. 558 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2020-08-22 01:24:36,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233701280] [2020-08-22 01:24:36,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:36,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 01:24:36,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955304386] [2020-08-22 01:24:36,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:24:36,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:36,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:24:36,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:24:36,694 INFO L87 Difference]: Start difference. First operand 228 states and 324 transitions. Second operand 12 states. [2020-08-22 01:24:37,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:37,017 INFO L93 Difference]: Finished difference Result 487 states and 755 transitions. [2020-08-22 01:24:37,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 01:24:37,018 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 286 [2020-08-22 01:24:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:37,027 INFO L225 Difference]: With dead ends: 487 [2020-08-22 01:24:37,027 INFO L226 Difference]: Without dead ends: 483 [2020-08-22 01:24:37,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:24:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-22 01:24:37,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 463. [2020-08-22 01:24:37,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-08-22 01:24:37,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 717 transitions. [2020-08-22 01:24:37,063 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 717 transitions. Word has length 286 [2020-08-22 01:24:37,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:37,063 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 717 transitions. [2020-08-22 01:24:37,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:24:37,063 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 717 transitions. [2020-08-22 01:24:37,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-08-22 01:24:37,070 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:37,071 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 24, 22, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 8, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:37,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 01:24:37,071 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:37,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2114796199, now seen corresponding path program 7 times [2020-08-22 01:24:37,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:37,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245092048] [2020-08-22 01:24:37,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 01:24:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 01:24:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:37,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 289 proven. 900 refuted. 0 times theorem prover too weak. 3182 trivial. 0 not checked. [2020-08-22 01:24:38,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245092048] [2020-08-22 01:24:38,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:38,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 01:24:38,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449355678] [2020-08-22 01:24:38,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 01:24:38,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:38,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 01:24:38,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:24:38,206 INFO L87 Difference]: Start difference. First operand 463 states and 717 transitions. Second operand 14 states. [2020-08-22 01:24:38,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:38,643 INFO L93 Difference]: Finished difference Result 978 states and 1610 transitions. [2020-08-22 01:24:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 01:24:38,644 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 395 [2020-08-22 01:24:38,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:38,655 INFO L225 Difference]: With dead ends: 978 [2020-08-22 01:24:38,656 INFO L226 Difference]: Without dead ends: 529 [2020-08-22 01:24:38,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2020-08-22 01:24:38,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-22 01:24:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 502. [2020-08-22 01:24:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2020-08-22 01:24:38,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 738 transitions. [2020-08-22 01:24:38,714 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 738 transitions. Word has length 395 [2020-08-22 01:24:38,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:38,715 INFO L479 AbstractCegarLoop]: Abstraction has 502 states and 738 transitions. [2020-08-22 01:24:38,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 01:24:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 738 transitions. [2020-08-22 01:24:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2020-08-22 01:24:38,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:38,738 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 40, 38, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 16, 14, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:38,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 01:24:38,739 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:38,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:38,739 INFO L82 PathProgramCache]: Analyzing trace with hash -85106141, now seen corresponding path program 8 times [2020-08-22 01:24:38,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:38,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675959958] [2020-08-22 01:24:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 01:24:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 01:24:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 01:24:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-22 01:24:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:40,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12907 backedges. 478 proven. 2018 refuted. 0 times theorem prover too weak. 10411 trivial. 0 not checked. [2020-08-22 01:24:41,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675959958] [2020-08-22 01:24:41,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:41,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 01:24:41,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095261153] [2020-08-22 01:24:41,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 01:24:41,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:41,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 01:24:41,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:24:41,521 INFO L87 Difference]: Start difference. First operand 502 states and 738 transitions. Second operand 16 states. [2020-08-22 01:24:42,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:42,174 INFO L93 Difference]: Finished difference Result 1138 states and 1852 transitions. [2020-08-22 01:24:42,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 01:24:42,175 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 667 [2020-08-22 01:24:42,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:42,185 INFO L225 Difference]: With dead ends: 1138 [2020-08-22 01:24:42,185 INFO L226 Difference]: Without dead ends: 650 [2020-08-22 01:24:42,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2020-08-22 01:24:42,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-08-22 01:24:42,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 570. [2020-08-22 01:24:42,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-08-22 01:24:42,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 855 transitions. [2020-08-22 01:24:42,237 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 855 transitions. Word has length 667 [2020-08-22 01:24:42,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:42,239 INFO L479 AbstractCegarLoop]: Abstraction has 570 states and 855 transitions. [2020-08-22 01:24:42,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 01:24:42,239 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 855 transitions. [2020-08-22 01:24:42,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2020-08-22 01:24:42,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:42,246 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 50, 50, 42, 41, 26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 16, 16, 12, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:42,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 01:24:42,246 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:42,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:42,247 INFO L82 PathProgramCache]: Analyzing trace with hash 792643710, now seen corresponding path program 9 times [2020-08-22 01:24:42,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:42,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757024269] [2020-08-22 01:24:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:42,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:42,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:42,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:42,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:42,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 01:24:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-22 01:24:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 01:24:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:43,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 14593 backedges. 618 proven. 2526 refuted. 0 times theorem prover too weak. 11449 trivial. 0 not checked. [2020-08-22 01:24:44,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757024269] [2020-08-22 01:24:44,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:44,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 01:24:44,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797526700] [2020-08-22 01:24:44,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 01:24:44,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:44,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 01:24:44,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:24:44,574 INFO L87 Difference]: Start difference. First operand 570 states and 855 transitions. Second operand 18 states. [2020-08-22 01:24:45,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:45,669 INFO L93 Difference]: Finished difference Result 1028 states and 1719 transitions. [2020-08-22 01:24:45,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-22 01:24:45,670 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 708 [2020-08-22 01:24:45,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:45,678 INFO L225 Difference]: With dead ends: 1028 [2020-08-22 01:24:45,678 INFO L226 Difference]: Without dead ends: 456 [2020-08-22 01:24:45,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=1472, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 01:24:45,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-08-22 01:24:45,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 371. [2020-08-22 01:24:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-08-22 01:24:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 534 transitions. [2020-08-22 01:24:45,712 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 534 transitions. Word has length 708 [2020-08-22 01:24:45,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:45,714 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 534 transitions. [2020-08-22 01:24:45,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 01:24:45,714 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 534 transitions. [2020-08-22 01:24:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-08-22 01:24:45,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:45,717 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 23, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:45,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 01:24:45,717 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:45,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:45,718 INFO L82 PathProgramCache]: Analyzing trace with hash 634662915, now seen corresponding path program 10 times [2020-08-22 01:24:45,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:45,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602277003] [2020-08-22 01:24:45,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:45,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:45,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:45,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 01:24:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-22 01:24:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:46,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 694 proven. 802 refuted. 0 times theorem prover too weak. 2874 trivial. 0 not checked. [2020-08-22 01:24:47,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602277003] [2020-08-22 01:24:47,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:47,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 01:24:47,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296476412] [2020-08-22 01:24:47,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 01:24:47,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:47,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 01:24:47,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:24:47,110 INFO L87 Difference]: Start difference. First operand 371 states and 534 transitions. Second operand 18 states. [2020-08-22 01:24:48,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:48,051 INFO L93 Difference]: Finished difference Result 819 states and 1289 transitions. [2020-08-22 01:24:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-22 01:24:48,052 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 395 [2020-08-22 01:24:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:48,059 INFO L225 Difference]: With dead ends: 819 [2020-08-22 01:24:48,060 INFO L226 Difference]: Without dead ends: 462 [2020-08-22 01:24:48,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 01:24:48,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-08-22 01:24:48,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 395. [2020-08-22 01:24:48,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-08-22 01:24:48,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 579 transitions. [2020-08-22 01:24:48,100 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 579 transitions. Word has length 395 [2020-08-22 01:24:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:48,101 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 579 transitions. [2020-08-22 01:24:48,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 01:24:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 579 transitions. [2020-08-22 01:24:48,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-08-22 01:24:48,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:48,108 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 34, 33, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 14, 12, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:48,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 01:24:48,108 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:48,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:48,109 INFO L82 PathProgramCache]: Analyzing trace with hash 2122481566, now seen corresponding path program 11 times [2020-08-22 01:24:48,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:48,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8119693] [2020-08-22 01:24:48,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 01:24:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:48,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-22 01:24:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 01:24:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 913 proven. 1781 refuted. 0 times theorem prover too weak. 6719 trivial. 0 not checked. [2020-08-22 01:24:49,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8119693] [2020-08-22 01:24:49,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:49,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-22 01:24:49,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831372481] [2020-08-22 01:24:49,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-22 01:24:49,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:49,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-22 01:24:49,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-08-22 01:24:49,969 INFO L87 Difference]: Start difference. First operand 395 states and 579 transitions. Second operand 20 states. [2020-08-22 01:24:51,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:51,372 INFO L93 Difference]: Finished difference Result 662 states and 1053 transitions. [2020-08-22 01:24:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 01:24:51,378 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 572 [2020-08-22 01:24:51,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:51,383 INFO L225 Difference]: With dead ends: 662 [2020-08-22 01:24:51,383 INFO L226 Difference]: Without dead ends: 230 [2020-08-22 01:24:51,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=333, Invalid=2117, Unknown=0, NotChecked=0, Total=2450 [2020-08-22 01:24:51,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-08-22 01:24:51,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 183. [2020-08-22 01:24:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-08-22 01:24:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 260 transitions. [2020-08-22 01:24:51,403 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 260 transitions. Word has length 572 [2020-08-22 01:24:51,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:51,403 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 260 transitions. [2020-08-22 01:24:51,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-22 01:24:51,404 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 260 transitions. [2020-08-22 01:24:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-08-22 01:24:51,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:51,407 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:51,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 01:24:51,408 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:51,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:51,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1326629730, now seen corresponding path program 12 times [2020-08-22 01:24:51,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:51,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858049646] [2020-08-22 01:24:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:24:51,520 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:24:51,520 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:24:51,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 01:24:51,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:24:51 BoogieIcfgContainer [2020-08-22 01:24:51,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:24:51,632 INFO L168 Benchmark]: Toolchain (without parser) took 27037.26 ms. Allocated memory was 146.3 MB in the beginning and 987.2 MB in the end (delta: 841.0 MB). Free memory was 102.3 MB in the beginning and 749.2 MB in the end (delta: -646.9 MB). Peak memory consumption was 194.1 MB. Max. memory is 7.1 GB. [2020-08-22 01:24:51,633 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 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 01:24:51,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.97 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-22 01:24:51,634 INFO L168 Benchmark]: Boogie Preprocessor took 167.80 ms. Allocated memory was 146.3 MB in the beginning and 206.6 MB in the end (delta: 60.3 MB). Free memory was 92.5 MB in the beginning and 185.0 MB in the end (delta: -92.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-22 01:24:51,634 INFO L168 Benchmark]: RCFGBuilder took 316.99 ms. Allocated memory is still 206.6 MB. Free memory was 185.0 MB in the beginning and 171.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-22 01:24:51,642 INFO L168 Benchmark]: TraceAbstraction took 26253.54 ms. Allocated memory was 206.6 MB in the beginning and 987.2 MB in the end (delta: 780.7 MB). Free memory was 170.8 MB in the beginning and 749.2 MB in the end (delta: -578.4 MB). Peak memory consumption was 202.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:24:51,649 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 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 288.97 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 167.80 ms. Allocated memory was 146.3 MB in the beginning and 206.6 MB in the end (delta: 60.3 MB). Free memory was 92.5 MB in the beginning and 185.0 MB in the end (delta: -92.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 316.99 ms. Allocated memory is still 206.6 MB. Free memory was 185.0 MB in the beginning and 171.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26253.54 ms. Allocated memory was 206.6 MB in the beginning and 987.2 MB in the end (delta: 780.7 MB). Free memory was 170.8 MB in the beginning and 749.2 MB in the end (delta: -578.4 MB). Peak memory consumption was 202.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int x = 8; [L37] CALL, EXPR fibo1(x) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L37] RET, EXPR fibo1(x) [L37] int result = fibo1(x); [L38] COND TRUE result == 21 [L39] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.0s, OverallIterations: 24, TraceHistogramMax: 53, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 763 SDtfs, 1001 SDslu, 4623 SDs, 0 SdLazy, 6788 SolverSat, 840 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1876 GetRequests, 1469 SyntacticMatches, 0 SemanticMatches, 407 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1996 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=570occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 441 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 5267 NumberOfCodeBlocks, 5267 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 4781 ConstructedInterpolants, 0 QuantifiedInterpolants, 2633633 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 46095/56717 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...