/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=SHALLOWEST --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_10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:46:00,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:46:00,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:46:00,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:46:00,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:46:00,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:46:00,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:46:00,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:46:00,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:46:00,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:46:00,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:46:00,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:46:00,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:46:00,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:46:00,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:46:00,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:46:00,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:46:00,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:46:00,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:46:00,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:46:00,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:46:00,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:46:00,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:46:00,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:46:00,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:46:00,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:46:00,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:46:00,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:46:00,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:46:00,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:46:00,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:46:00,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:46:00,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:46:00,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:46:00,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:46:00,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:46:00,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:46:00,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:46:00,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:46:00,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:46:00,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:46:00,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:46:00,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:46:00,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:46:00,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:46:00,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:46:00,480 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:46:00,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:46:00,480 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:46:00,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:46:00,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:46:00,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:46:00,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:46:00,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:46:00,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:46:00,482 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:46:00,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:46:00,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:46:00,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:46:00,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:46:00,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:46:00,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:46:00,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:46:00,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:46:00,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:46:00,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:46:00,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:46:00,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:46:00,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:46:00,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:46:00,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:46:00,485 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:46:00,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:46:00,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:46:00,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:46:00,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:46:00,946 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:46:00,947 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2020-09-24 23:46:01,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c444c700/c8980eeb7489487bb906865e1aad4329/FLAGb174ed7d2 [2020-09-24 23:46:01,576 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:46:01,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2020-09-24 23:46:01,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c444c700/c8980eeb7489487bb906865e1aad4329/FLAGb174ed7d2 [2020-09-24 23:46:01,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c444c700/c8980eeb7489487bb906865e1aad4329 [2020-09-24 23:46:01,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:46:01,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:46:01,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:46:01,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:46:01,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:46:01,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:46:01" (1/1) ... [2020-09-24 23:46:01,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b86a7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:01, skipping insertion in model container [2020-09-24 23:46:01,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:46:01" (1/1) ... [2020-09-24 23:46:01,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:46:01,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:46:02,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:46:02,211 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:46:02,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:46:02,249 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:46:02,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:02 WrapperNode [2020-09-24 23:46:02,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:46:02,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:46:02,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:46:02,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:46:02,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:02" (1/1) ... [2020-09-24 23:46:02,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:02" (1/1) ... [2020-09-24 23:46:02,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:02" (1/1) ... [2020-09-24 23:46:02,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:02" (1/1) ... [2020-09-24 23:46:02,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:02" (1/1) ... [2020-09-24 23:46:02,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:02" (1/1) ... [2020-09-24 23:46:02,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:02" (1/1) ... [2020-09-24 23:46:02,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:46:02,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:46:02,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:46:02,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:46:02,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:02" (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 [2020-09-24 23:46:02,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:46:02,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:46:02,473 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 23:46:02,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:46:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:46:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:46:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 23:46:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:46:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:46:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:46:02,710 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:46:02,711 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:46:02,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:46:02 BoogieIcfgContainer [2020-09-24 23:46:02,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:46:02,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:46:02,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:46:02,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:46:02,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:46:01" (1/3) ... [2020-09-24 23:46:02,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2395d25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:46:02, skipping insertion in model container [2020-09-24 23:46:02,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:02" (2/3) ... [2020-09-24 23:46:02,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2395d25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:46:02, skipping insertion in model container [2020-09-24 23:46:02,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:46:02" (3/3) ... [2020-09-24 23:46:02,746 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_10-2.c [2020-09-24 23:46:02,776 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:46:02,787 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:46:02,831 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:46:02,860 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:46:02,861 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:46:02,861 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:46:02,861 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:46:02,861 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:46:02,861 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:46:02,862 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:46:02,862 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:46:02,882 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 23:46:02,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 23:46:02,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:02,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:02,891 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:02,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:02,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 23:46:02,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:02,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526068207] [2020-09-24 23:46:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:03,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:03,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:03,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:46:03,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:03,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 23:46:03,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:03,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:03,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:03,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:46:03,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:46:03,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:03,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:03,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:03,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:03,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:46:03,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:03,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:03,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:03,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:03,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:03,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:03,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:03,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 23:46:03,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:03,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:03,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:03,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:46:03,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526068207] [2020-09-24 23:46:03,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:46:03,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:46:03,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046445738] [2020-09-24 23:46:03,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:46:03,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:03,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:46:03,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:46:03,277 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 23:46:03,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:03,390 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 23:46:03,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:46:03,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 23:46:03,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:03,407 INFO L225 Difference]: With dead ends: 44 [2020-09-24 23:46:03,407 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 23:46:03,412 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 [2020-09-24 23:46:03,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 23:46:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 23:46:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 23:46:03,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 23:46:03,470 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 23:46:03,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:03,471 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 23:46:03,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:46:03,472 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 23:46:03,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 23:46:03,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:03,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:03,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:46:03,475 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:03,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:03,476 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 23:46:03,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:03,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120990688] [2020-09-24 23:46:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:03,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:03,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:46:03,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:03,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 23:46:03,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:03,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:03,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:03,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:03,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:03,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:03,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:03,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:03,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:03,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:46:03,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:03,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:03,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:03,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:03,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:03,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:03,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 23:46:03,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:03,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:03,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:03,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:46:03,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120990688] [2020-09-24 23:46:03,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:46:03,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:46:03,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417888418] [2020-09-24 23:46:03,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:46:03,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:03,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:46:03,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:46:03,712 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 23:46:03,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:03,780 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 23:46:03,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:46:03,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 23:46:03,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:03,783 INFO L225 Difference]: With dead ends: 36 [2020-09-24 23:46:03,783 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 23:46:03,785 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 [2020-09-24 23:46:03,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 23:46:03,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 23:46:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 23:46:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 23:46:03,793 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 23:46:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:03,794 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 23:46:03,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:46:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 23:46:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 23:46:03,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:03,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:03,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:46:03,796 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:03,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:03,797 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 23:46:03,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:03,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849528584] [2020-09-24 23:46:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:03,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:03,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:04,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 23:46:04,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:46:04,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-09-24 23:46:04,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:46:04,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:04,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:04,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:04,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:04,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:04,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:46:04,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:04,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:04,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:04,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:04,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:04,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:04,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:46:04,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:46:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-24 23:46:04,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:46:04,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:04,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:04,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:04,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:04,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:46:04,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:04,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:04,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:46:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:04,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:04,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:04,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:04,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:46:04,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:04,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:04,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:04,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:04,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 23:46:04,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849528584] [2020-09-24 23:46:04,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:04,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:46:04,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198189765] [2020-09-24 23:46:04,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:46:04,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:04,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:46:04,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:46:04,824 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 23:46:04,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:04,921 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-24 23:46:04,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:46:04,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 23:46:04,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:04,924 INFO L225 Difference]: With dead ends: 62 [2020-09-24 23:46:04,924 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 23:46:04,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:46:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 23:46:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-24 23:46:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 23:46:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-24 23:46:04,936 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-24 23:46:04,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:04,936 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-24 23:46:04,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:46:04,937 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-24 23:46:04,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 23:46:04,939 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:04,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:04,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:46:04,940 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:04,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:04,940 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 23:46:04,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:04,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251390844] [2020-09-24 23:46:04,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:04,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:05,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 23:46:05,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:46:05,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-09-24 23:46:05,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:05,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:05,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:05,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:46:05,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:05,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:05,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:05,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:46:05,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:05,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:05,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:05,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:05,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:05,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:05,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:06,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:46:06,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:46:06,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-09-24 23:46:06,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:46:06,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:06,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:06,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:06,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:06,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:06,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 23:46:06,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:46:06,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:06,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:46:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:06,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:06,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:06,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:46:06,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:06,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 23:46:06,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251390844] [2020-09-24 23:46:06,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:06,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:46:06,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086439650] [2020-09-24 23:46:06,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:46:06,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:06,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:46:06,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:46:06,185 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-24 23:46:06,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:06,323 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2020-09-24 23:46:06,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:46:06,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 23:46:06,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:06,329 INFO L225 Difference]: With dead ends: 94 [2020-09-24 23:46:06,329 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 23:46:06,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:46:06,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 23:46:06,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-24 23:46:06,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 23:46:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-24 23:46:06,347 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 35 [2020-09-24 23:46:06,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:06,347 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-24 23:46:06,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:46:06,347 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-24 23:46:06,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 23:46:06,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:06,351 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-24 23:46:06,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:46:06,351 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:06,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:06,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 23:46:06,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:06,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581839586] [2020-09-24 23:46:06,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:06,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:11,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 23:46:11,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:46:11,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 23:46:11,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:11,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:11,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:11,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 23:46:11,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:11,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:11,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:11,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:46:11,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:11,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:11,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:11,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:11,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:11,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:11,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:12,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:15,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:46:15,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:46:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3741 [2020-09-24 23:46:15,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:46:15,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:15,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:15,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:15,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:46:15,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:46:15,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-24 23:46:15,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:46:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:46:15,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:15,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:15,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:15,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:15,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:15,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:46:15,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:15,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:15,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:15,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:46:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:15,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:15,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:15,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:15,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:46:15,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:15,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:15,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:15,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:15,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:15,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:46:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:15,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:15,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:15,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:46:15,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 23:46:15,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581839586] [2020-09-24 23:46:15,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:15,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 23:46:15,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65516284] [2020-09-24 23:46:15,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:46:15,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:15,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:46:15,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:46:15,591 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 9 states. [2020-09-24 23:46:15,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:15,751 INFO L93 Difference]: Finished difference Result 82 states and 114 transitions. [2020-09-24 23:46:15,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:46:15,752 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-24 23:46:15,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:15,755 INFO L225 Difference]: With dead ends: 82 [2020-09-24 23:46:15,755 INFO L226 Difference]: Without dead ends: 76 [2020-09-24 23:46:15,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:46:15,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-24 23:46:15,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-09-24 23:46:15,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 23:46:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2020-09-24 23:46:15,792 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 51 [2020-09-24 23:46:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:15,794 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2020-09-24 23:46:15,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:46:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2020-09-24 23:46:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-24 23:46:15,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:15,801 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:15,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:46:15,802 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:15,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1437641953, now seen corresponding path program 2 times [2020-09-24 23:46:15,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:15,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979190001] [2020-09-24 23:46:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:15,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:20,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-24 23:46:20,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 23:46:20,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 23:46:20,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:20,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:46:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 23:46:20,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:20,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:20,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:20,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:20,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:46:20,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:20,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:20,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:20,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:20,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:20,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:20,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:21,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:21,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:21,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:25,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 23:46:25,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-24 23:46:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-24 23:46:25,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 23:46:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:46:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 23:46:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:25,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:26,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:26,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:26,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:26,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:26,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:26,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:26,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:28,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:46:28,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 23:46:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2491 [2020-09-24 23:46:28,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 23:46:28,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:28,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:28,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:28,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:46:28,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:46:28,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-24 23:46:28,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:28,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:46:28,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:28,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:28,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:28,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:46:28,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:28,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:28,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:46:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:28,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:28,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:28,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:46:28,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:28,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:46:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:28,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:28,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:28,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:28,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:46:28,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:28,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 23:46:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:28,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:29,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:33,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 23:46:33,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 23:46:33,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 23:46:33,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:46:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:46:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:46:33,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:33,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:33,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:34,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:46:34,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:46:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 772 [2020-09-24 23:46:34,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:46:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:46:34,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:34,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:34,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:34,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:46:34,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:46:34,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 23:46:34,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:46:34,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:34,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:34,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:34,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:34,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:34,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:46:34,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:34,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:34,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:46:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:34,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:34,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:34,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:46:34,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:34,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:34,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:46:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:34,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:34,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:34,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:46:34,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:34,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 23:46:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:34,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:34,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:34,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:34,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:46:34,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 23:46:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 152 proven. 141 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-09-24 23:46:34,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979190001] [2020-09-24 23:46:34,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:34,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 23:46:34,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53307881] [2020-09-24 23:46:34,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 23:46:34,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:34,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 23:46:34,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:46:34,785 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand 13 states. [2020-09-24 23:46:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:35,028 INFO L93 Difference]: Finished difference Result 141 states and 232 transitions. [2020-09-24 23:46:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:46:35,029 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 121 [2020-09-24 23:46:35,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:35,031 INFO L225 Difference]: With dead ends: 141 [2020-09-24 23:46:35,031 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 23:46:35,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:46:35,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 23:46:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-09-24 23:46:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 23:46:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 96 transitions. [2020-09-24 23:46:35,046 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 96 transitions. Word has length 121 [2020-09-24 23:46:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:35,046 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 96 transitions. [2020-09-24 23:46:35,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 23:46:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 96 transitions. [2020-09-24 23:46:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 23:46:35,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:35,049 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:35,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:46:35,050 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:35,050 INFO L82 PathProgramCache]: Analyzing trace with hash -527666429, now seen corresponding path program 3 times [2020-09-24 23:46:35,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:35,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427981868] [2020-09-24 23:46:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:35,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:37,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:37,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:40,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 23:46:40,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 23:46:40,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 23:46:40,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:46:40,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:40,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:40,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:40,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:46:40,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:40,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:40,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:44,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:44,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:44,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:45,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 23:46:45,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-24 23:46:45,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 23:46:45,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 23:46:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 23:46:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 23:46:45,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:45,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:45,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:46:45,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:46:45,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-09-24 23:46:45,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:46:45,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:45,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:45,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:45,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:45,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:45,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:46:45,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:45,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:45,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:45,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:46:45,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:46:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:45,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:45,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:46:45,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:45,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:46:45,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:45,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:45,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:45,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:46:45,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:45,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:45,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:45,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:45,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:45,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:46:45,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:45,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:45,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:46:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:45,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:45,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:45,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:45,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:46:45,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:45,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:45,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:45,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 23:46:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:46,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:46,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:46,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:46,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:46,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:46,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:46,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:49,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:49,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:49,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:50,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 23:46:50,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 23:46:50,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 23:46:50,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 23:46:50,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:50,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:50,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:51,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:46:51,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:46:51,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-09-24 23:46:51,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 23:46:51,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:51,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:51,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:51,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:51,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:51,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:46:51,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:51,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:51,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:46:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:51,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:51,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:46:51,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:51,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:46:51,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:51,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:51,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:51,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:51,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:51,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:46:51,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:51,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:51,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:46:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:51,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:51,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:51,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:51,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:46:51,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:51,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:51,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 23:46:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:51,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:51,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:51,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:46:51,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 23:46:51,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:51,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:51,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:51,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:46:51,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 143 proven. 112 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-09-24 23:46:51,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427981868] [2020-09-24 23:46:51,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:51,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 23:46:51,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988880866] [2020-09-24 23:46:51,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:46:51,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:51,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:46:51,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:46:51,462 INFO L87 Difference]: Start difference. First operand 71 states and 96 transitions. Second operand 9 states. [2020-09-24 23:46:51,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:51,715 INFO L93 Difference]: Finished difference Result 195 states and 318 transitions. [2020-09-24 23:46:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:46:51,716 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 123 [2020-09-24 23:46:51,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:51,718 INFO L225 Difference]: With dead ends: 195 [2020-09-24 23:46:51,718 INFO L226 Difference]: Without dead ends: 126 [2020-09-24 23:46:51,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:46:51,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-24 23:46:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 92. [2020-09-24 23:46:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-24 23:46:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 133 transitions. [2020-09-24 23:46:51,737 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 133 transitions. Word has length 123 [2020-09-24 23:46:51,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:51,737 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 133 transitions. [2020-09-24 23:46:51,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:46:51,738 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 133 transitions. [2020-09-24 23:46:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 23:46:51,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:51,740 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:51,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:46:51,740 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:51,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:51,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-24 23:46:51,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:51,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560413653] [2020-09-24 23:46:51,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:51,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:51,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:52,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:52,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking...