/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:19:00,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:19:00,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:19:00,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:19:00,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:19:00,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:19:00,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:19:00,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:19:00,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:19:00,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:19:00,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:19:00,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:19:00,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:19:00,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:19:00,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:19:00,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:19:00,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:19:00,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:19:00,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:19:00,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:19:00,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:19:00,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:19:00,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:19:00,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:19:00,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:19:00,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:19:00,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:19:00,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:19:00,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:19:00,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:19:00,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:19:00,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:19:00,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:19:00,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:19:00,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:19:00,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:19:00,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:19:00,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:19:00,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:19:00,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:19:00,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:19:00,247 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:19:00,294 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:19:00,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:19:00,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:19:00,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:19:00,298 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:19:00,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:19:00,299 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:19:00,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:19:00,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:19:00,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:19:00,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:19:00,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:19:00,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:19:00,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:19:00,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:19:00,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:19:00,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:19:00,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:19:00,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:19:00,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:19:00,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:19:00,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:19:00,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:19:00,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:19:00,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:19:00,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:19:00,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:19:00,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:19:00,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:19:00,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:19:00,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:19:00,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:19:00,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:19:00,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:19:00,770 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:19:00,771 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-25 04:19:00,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86b31c50d/ce5a9651a639411db8ac5f0744c2dd8a/FLAG34ca5c0ca [2020-09-25 04:19:01,425 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:19:01,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-25 04:19:01,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86b31c50d/ce5a9651a639411db8ac5f0744c2dd8a/FLAG34ca5c0ca [2020-09-25 04:19:01,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86b31c50d/ce5a9651a639411db8ac5f0744c2dd8a [2020-09-25 04:19:01,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:19:01,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:19:01,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:19:01,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:19:01,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:19:01,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:19:01" (1/1) ... [2020-09-25 04:19:01,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79437e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:01, skipping insertion in model container [2020-09-25 04:19:01,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:19:01" (1/1) ... [2020-09-25 04:19:01,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:19:01,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:19:02,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:19:02,050 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:19:02,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:19:02,091 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:19:02,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:02 WrapperNode [2020-09-25 04:19:02,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:19:02,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:19:02,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:19:02,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:19:02,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:02" (1/1) ... [2020-09-25 04:19:02,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:02" (1/1) ... [2020-09-25 04:19:02,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:02" (1/1) ... [2020-09-25 04:19:02,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:02" (1/1) ... [2020-09-25 04:19:02,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:02" (1/1) ... [2020-09-25 04:19:02,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:02" (1/1) ... [2020-09-25 04:19:02,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:02" (1/1) ... [2020-09-25 04:19:02,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:19:02,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:19:02,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:19:02,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:19:02,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:19:02,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:19:02,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:19:02,285 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 04:19:02,285 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 04:19:02,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:19:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:19:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:19:02,286 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 04:19:02,286 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 04:19:02,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:19:02,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:19:02,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:19:02,535 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:19:02,536 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:19:02,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:19:02 BoogieIcfgContainer [2020-09-25 04:19:02,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:19:02,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:19:02,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:19:02,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:19:02,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:19:01" (1/3) ... [2020-09-25 04:19:02,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f7f498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:19:02, skipping insertion in model container [2020-09-25 04:19:02,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:19:02" (2/3) ... [2020-09-25 04:19:02,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f7f498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:19:02, skipping insertion in model container [2020-09-25 04:19:02,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:19:02" (3/3) ... [2020-09-25 04:19:02,552 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2020-09-25 04:19:02,565 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:19:02,577 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:19:02,633 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:19:02,702 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:19:02,703 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:19:02,703 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:19:02,703 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:19:02,704 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:19:02,704 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:19:02,704 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:19:02,704 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:19:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 04:19:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 04:19:02,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:02,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:02,736 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:02,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:02,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 04:19:02,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:02,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681144085] [2020-09-25 04:19:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:02,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:02,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:02,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:19:02,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 04:19:02,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:02,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:19:02,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:19:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:03,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:03,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:03,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:19:03,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:03,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:03,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:19:03,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:03,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:03,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:03,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:03,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 04:19:03,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:03,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:03,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:03,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:03,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:03,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:19:03,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681144085] [2020-09-25 04:19:03,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:19:03,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:19:03,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178452565] [2020-09-25 04:19:03,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:19:03,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:03,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:19:03,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:19:03,189 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 04:19:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:03,339 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 04:19:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:19:03,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 04:19:03,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:03,357 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:19:03,357 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 04:19:03,362 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 [2020-09-25 04:19:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 04:19:03,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 04:19:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:19:03,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:19:03,426 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 04:19:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:03,427 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:19:03,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:19:03,427 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:19:03,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 04:19:03,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:03,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:03,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:19:03,430 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:03,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:03,430 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 04:19:03,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:03,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620808383] [2020-09-25 04:19:03,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:03,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:03,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:19:03,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 04:19:03,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:03,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:03,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:03,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:03,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:03,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:03,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:03,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:03,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:03,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:19:03,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:03,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:03,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:03,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:03,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:19:03,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:03,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:03,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:03,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:03,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:03,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:19:03,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620808383] [2020-09-25 04:19:03,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:19:03,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:19:03,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767222849] [2020-09-25 04:19:03,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:19:03,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:03,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:19:03,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:19:03,629 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 04:19:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:03,720 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 04:19:03,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:19:03,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 04:19:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:03,723 INFO L225 Difference]: With dead ends: 50 [2020-09-25 04:19:03,724 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 04:19:03,725 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 [2020-09-25 04:19:03,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 04:19:03,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 04:19:03,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:19:03,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:19:03,735 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 04:19:03,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:03,736 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:19:03,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:19:03,736 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:19:03,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 04:19:03,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:03,738 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:19:03,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:19:03,739 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:03,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:03,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 04:19:03,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:03,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526803724] [2020-09-25 04:19:03,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:03,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:04,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:04,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:19:04,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:04,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-09-25 04:19:04,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:04,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:19:04,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:19:04,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:04,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:04,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:04,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:04,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:04,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:04,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:04,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:04,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:04,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:04,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:04,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:04,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:04,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:04,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 04:19:04,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:04,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:04,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:04,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:04,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:19:04,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:04,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:04,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:04,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:04,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:04,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:04,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:19:04,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:04,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:04,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:04,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:04,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:04,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:04,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:04,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:04,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:04,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:04,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:04,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:19:04,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:04,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:04,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:19:04,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526803724] [2020-09-25 04:19:04,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:19:04,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:19:04,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904572569] [2020-09-25 04:19:04,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:04,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:04,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:04,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:04,743 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 04:19:04,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:04,871 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 04:19:04,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:04,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 04:19:04,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:04,874 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:19:04,874 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 04:19:04,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:04,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 04:19:04,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 04:19:04,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:19:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 04:19:04,887 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 04:19:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:04,887 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 04:19:04,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:04,887 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 04:19:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 04:19:04,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:04,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:04,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:19:04,890 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:04,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:04,891 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 04:19:04,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:04,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658276091] [2020-09-25 04:19:04,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:04,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:05,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:19:05,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:05,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-09-25 04:19:05,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:05,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:19:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:05,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:05,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:05,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:05,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:05,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:05,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:05,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:05,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:05,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:05,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:19:05,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:05,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-09-25 04:19:05,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:05,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:05,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:05,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:05,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:19:05,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:05,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:05,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:05,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:05,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:05,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:19:05,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:05,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:05,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:05,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:05,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:05,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:05,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:05,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:05,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:19:05,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:05,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:05,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:19:05,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658276091] [2020-09-25 04:19:05,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:05,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:05,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226418743] [2020-09-25 04:19:05,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:05,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:05,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:05,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:05,978 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 04:19:06,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:06,152 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 04:19:06,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:06,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 04:19:06,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:06,159 INFO L225 Difference]: With dead ends: 110 [2020-09-25 04:19:06,160 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 04:19:06,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 04:19:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 04:19:06,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 04:19:06,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 04:19:06,192 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 04:19:06,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:06,193 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 04:19:06,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 04:19:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 04:19:06,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:06,199 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:06,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:19:06,200 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:06,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:06,200 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 04:19:06,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:06,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853831986] [2020-09-25 04:19:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:06,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:11,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:19:11,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:19:11,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:19:11,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:11,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:19:11,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:11,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:11,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:11,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:11,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:11,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:11,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:11,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:11,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:11,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:11,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:12,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:15,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:19:15,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:19:15,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3761 [2020-09-25 04:19:15,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:15,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:19:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:15,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:15,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:15,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:15,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 04:19:15,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:15,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:19:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:15,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:15,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:15,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:15,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:15,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:15,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:15,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:15,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:15,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:15,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:15,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:15,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:15,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:15,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:15,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:15,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:15,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:15,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:15,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:15,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:19:15,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:15,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:15,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 04:19:15,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853831986] [2020-09-25 04:19:15,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:15,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:15,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710020864] [2020-09-25 04:19:15,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:15,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:15,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:15,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:15,243 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 04:19:15,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:15,386 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-09-25 04:19:15,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:15,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 04:19:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:15,390 INFO L225 Difference]: With dead ends: 72 [2020-09-25 04:19:15,390 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 04:19:15,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:15,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 04:19:15,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 04:19:15,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 04:19:15,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 04:19:15,406 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 04:19:15,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:15,409 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 04:19:15,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 04:19:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 04:19:15,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:15,415 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:15,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:19:15,415 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:15,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:15,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 04:19:15,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:15,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818272865] [2020-09-25 04:19:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:15,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:16,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:16,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:20,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:19:20,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:19:20,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:19:20,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:20,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:19:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:20,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:20,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:20,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:20,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:20,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:20,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:20,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:20,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:20,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:20,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:21,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:21,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:21,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:25,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 04:19:25,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:19:25,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:19:25,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:25,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:19:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:25,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:25,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:25,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:25,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:25,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 04:19:25,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:25,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:25,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:25,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:25,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:25,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:25,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:25,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:25,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:25,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:25,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:25,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:25,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:25,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:25,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:25,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:25,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:25,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:25,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:25,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:25,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:25,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:19:25,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:25,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:19:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:25,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:25,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:25,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:25,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:25,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:25,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:19:25,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:25,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:19:25,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:25,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:25,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:25,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:25,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:25,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:25,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:25,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:25,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:19:25,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:25,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 04:19:25,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818272865] [2020-09-25 04:19:25,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:25,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:25,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219238189] [2020-09-25 04:19:25,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:25,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:25,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:25,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:25,657 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 6 states. [2020-09-25 04:19:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:25,754 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2020-09-25 04:19:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:25,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 04:19:25,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:25,756 INFO L225 Difference]: With dead ends: 104 [2020-09-25 04:19:25,756 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 04:19:25,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:25,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 04:19:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-25 04:19:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 04:19:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2020-09-25 04:19:25,768 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 67 [2020-09-25 04:19:25,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:25,769 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2020-09-25 04:19:25,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2020-09-25 04:19:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 04:19:25,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:25,771 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:25,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:19:25,772 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:25,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:25,772 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 04:19:25,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:25,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374720823] [2020-09-25 04:19:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:26,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:27,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:28,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:30,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:19:30,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:19:30,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:19:30,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:30,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:30,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:19:30,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:30,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 04:19:30,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:30,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:30,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:30,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:30,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:30,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:30,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:30,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:30,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:30,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:35,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:19:35,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:19:35,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:19:35,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:35,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:35,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:19:35,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:35,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 04:19:35,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:35,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:35,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:35,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:35,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:35,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:19:35,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:35,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:19:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:35,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:35,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:35,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:35,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:35,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:35,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:35,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:35,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:35,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:35,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:35,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:35,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:35,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:35,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:35,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:35,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:35,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:19:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:35,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:36,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:36,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:36,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 04:19:36,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:36,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:19:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:19:36,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:36,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:36,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:36,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:36,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:36,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:19:36,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:36,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:36,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:36,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:36,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:36,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:36,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:36,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:19:36,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:36,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:36,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:36,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:36,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:36,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 04:19:36,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374720823] [2020-09-25 04:19:36,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:36,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:19:36,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725148466] [2020-09-25 04:19:36,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:19:36,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:36,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:19:36,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:36,257 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand 9 states. [2020-09-25 04:19:36,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:36,456 INFO L93 Difference]: Finished difference Result 84 states and 115 transitions. [2020-09-25 04:19:36,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:19:36,457 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 04:19:36,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:36,461 INFO L225 Difference]: With dead ends: 84 [2020-09-25 04:19:36,462 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 04:19:36,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:19:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 04:19:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2020-09-25 04:19:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 04:19:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 90 transitions. [2020-09-25 04:19:36,488 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 90 transitions. Word has length 69 [2020-09-25 04:19:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:36,489 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 90 transitions. [2020-09-25 04:19:36,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:19:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 90 transitions. [2020-09-25 04:19:36,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 04:19:36,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:36,492 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:36,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:19:36,492 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:36,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:36,492 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 04:19:36,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:36,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680937896] [2020-09-25 04:19:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:36,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:41,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 04:19:41,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:19:41,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:19:41,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:41,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 04:19:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:41,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:41,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:41,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:41,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:41,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:41,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:41,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:46,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 04:19:46,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-09-25 04:19:46,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:19:46,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:46,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:19:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:46,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:46,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:47,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:19:47,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:47,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-09-25 04:19:47,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:47,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:19:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:47,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:47,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:47,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:47,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:47,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:19:47,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:47,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:19:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:47,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:47,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:47,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:47,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:47,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:47,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:47,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:47,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:47,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:47,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:47,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:47,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:47,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:47,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:47,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:47,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:19:47,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:47,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:47,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:47,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:47,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:47,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:47,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:47,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:19:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:47,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:47,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 04:19:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:47,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:47,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:19:47,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:19:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-09-25 04:19:47,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:47,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 04:19:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:47,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:47,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:48,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 04:19:48,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:48,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:48,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:48,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:48,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:48,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:48,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:48,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:48,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:48,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:48,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:48,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:48,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:48,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:48,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:48,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:48,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:48,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 17 proven. 43 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 04:19:48,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680937896] [2020-09-25 04:19:48,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:48,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:48,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840154716] [2020-09-25 04:19:48,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:48,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:48,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:48,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:48,069 INFO L87 Difference]: Start difference. First operand 68 states and 90 transitions. Second operand 6 states. [2020-09-25 04:19:48,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:48,164 INFO L93 Difference]: Finished difference Result 132 states and 193 transitions. [2020-09-25 04:19:48,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:48,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-09-25 04:19:48,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:48,167 INFO L225 Difference]: With dead ends: 132 [2020-09-25 04:19:48,167 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 04:19:48,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 04:19:48,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 04:19:48,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 04:19:48,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2020-09-25 04:19:48,195 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 101 [2020-09-25 04:19:48,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:48,196 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2020-09-25 04:19:48,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2020-09-25 04:19:48,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 04:19:48,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:48,202 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:48,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:19:48,202 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:48,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1645450882, now seen corresponding path program 1 times [2020-09-25 04:19:48,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:48,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864429439] [2020-09-25 04:19:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:53,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 04:19:53,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:19:53,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 04:19:53,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:53,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:19:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 04:19:53,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:53,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:53,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:53,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:53,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:53,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:53,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:53,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:53,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:53,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:53,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:53,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:53,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking...