/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:25:43,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:25:43,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:25:43,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:25:43,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:25:43,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:25:43,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:25:43,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:25:43,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:25:43,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:25:43,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:25:43,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:25:43,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:25:43,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:25:43,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:25:43,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:25:43,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:25:43,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:25:43,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:25:43,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:25:43,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:25:43,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:25:43,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:25:43,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:25:43,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:25:43,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:25:43,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:25:43,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:25:43,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:25:43,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:25:43,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:25:43,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:25:43,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:25:43,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:25:43,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:25:43,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:25:43,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:25:43,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:25:43,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:25:43,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:25:43,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:25:43,910 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:25:43,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:25:43,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:25:43,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:25:43,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:25:43,961 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:25:43,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:25:43,962 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:25:43,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:25:43,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:25:43,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:25:43,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:25:43,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:25:43,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:25:43,964 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:25:43,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:25:43,966 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:25:43,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:25:43,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:25:43,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:25:43,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:25:43,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:25:43,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:25:43,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:25:43,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:25:43,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:25:43,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:25:43,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:25:43,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:25:43,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:25:43,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:25:44,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:25:44,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:25:44,565 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:25:44,568 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:25:44,569 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:25:44,570 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 04:25:44,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56b4d194c/9fc487152d7141618a603ee42fd4084f/FLAG0596cde3e [2020-09-25 04:25:45,341 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:25:45,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 04:25:45,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56b4d194c/9fc487152d7141618a603ee42fd4084f/FLAG0596cde3e [2020-09-25 04:25:45,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56b4d194c/9fc487152d7141618a603ee42fd4084f [2020-09-25 04:25:45,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:25:45,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:25:45,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:45,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:25:45,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:25:45,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:45" (1/1) ... [2020-09-25 04:25:45,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19947d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:45, skipping insertion in model container [2020-09-25 04:25:45,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:45" (1/1) ... [2020-09-25 04:25:45,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:25:45,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:25:46,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:46,413 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:25:46,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:46,516 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:25:46,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46 WrapperNode [2020-09-25 04:25:46,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:46,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:25:46,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:25:46,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:25:46,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:25:46,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:25:46,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:25:46,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:25:46,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:25:46,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:25:46,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:25:46,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:25:46,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:25:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:25:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:25:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:25:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:25:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:25:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:25:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:25:48,103 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:25:48,104 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:25:48,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:48 BoogieIcfgContainer [2020-09-25 04:25:48,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:25:48,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:25:48,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:25:48,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:25:48,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:25:45" (1/3) ... [2020-09-25 04:25:48,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a9bec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:48, skipping insertion in model container [2020-09-25 04:25:48,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (2/3) ... [2020-09-25 04:25:48,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a9bec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:48, skipping insertion in model container [2020-09-25 04:25:48,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:48" (3/3) ... [2020-09-25 04:25:48,123 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label44.c [2020-09-25 04:25:48,136 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:25:48,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:25:48,170 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:25:48,204 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:25:48,205 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:25:48,205 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:25:48,205 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:25:48,205 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:25:48,205 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:25:48,205 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:25:48,206 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:25:48,241 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:25:48,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 04:25:48,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:48,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:48,263 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:48,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:48,270 INFO L82 PathProgramCache]: Analyzing trace with hash 948138895, now seen corresponding path program 1 times [2020-09-25 04:25:48,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:48,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693291698] [2020-09-25 04:25:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:48,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:48,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:50,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:51,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:53,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:53,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 04:25:53,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:25:53,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:25:53,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:53,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:25:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 04:25:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:25:53,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:53,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:53,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:53,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:53,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:53,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:25:53,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:53,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:25:53,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:53,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693291698] [2020-09-25 04:25:53,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:53,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:25:53,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772105389] [2020-09-25 04:25:53,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:25:53,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:53,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:25:53,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:25:53,879 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:25:56,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:56,297 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 04:25:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:25:56,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-09-25 04:25:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:56,325 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 04:25:56,325 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 04:25:56,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 04:25:56,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 04:25:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:25:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 04:25:56,439 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 112 [2020-09-25 04:25:56,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:56,441 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 04:25:56,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:25:56,441 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 04:25:56,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 04:25:56,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:56,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:56,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:25:56,459 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:56,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:56,459 INFO L82 PathProgramCache]: Analyzing trace with hash -2029057097, now seen corresponding path program 1 times [2020-09-25 04:25:56,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:56,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885039633] [2020-09-25 04:25:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:56,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:56,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:57,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:59,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:01,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:01,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 04:26:01,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:26:01,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 04:26:01,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:01,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 04:26:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 04:26:01,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:01,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:01,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:01,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:01,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:01,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:01,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:26:01,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:01,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:01,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:01,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:01,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 04:26:01,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:01,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:01,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:01,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:01,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:01,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:26:01,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:01,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:01,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:01,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:26:01,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:01,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885039633] [2020-09-25 04:26:01,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:01,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:01,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071652098] [2020-09-25 04:26:01,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:01,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:01,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:01,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:01,819 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 04:26:03,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:03,823 INFO L93 Difference]: Finished difference Result 1503 states and 1875 transitions. [2020-09-25 04:26:03,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:03,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-25 04:26:03,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:03,831 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 04:26:03,831 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 04:26:03,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 04:26:03,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 889. [2020-09-25 04:26:03,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 04:26:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1094 transitions. [2020-09-25 04:26:03,880 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1094 transitions. Word has length 133 [2020-09-25 04:26:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:03,881 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1094 transitions. [2020-09-25 04:26:03,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1094 transitions. [2020-09-25 04:26:03,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 04:26:03,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:03,887 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:03,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:26:03,888 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:03,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:03,889 INFO L82 PathProgramCache]: Analyzing trace with hash -762171496, now seen corresponding path program 1 times [2020-09-25 04:26:03,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:03,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536241755] [2020-09-25 04:26:03,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:03,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:08,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:08,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 04:26:08,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:26:08,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 04:26:08,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:08,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:26:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 04:26:08,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:09,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:09,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:09,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:09,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:09,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:09,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:26:09,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:09,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:09,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:09,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:09,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:26:09,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:26:09,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:09,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:26:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:09,223 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:09,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536241755] [2020-09-25 04:26:09,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:09,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:09,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946693790] [2020-09-25 04:26:09,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:09,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:09,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:09,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:09,228 INFO L87 Difference]: Start difference. First operand 889 states and 1094 transitions. Second operand 5 states. [2020-09-25 04:26:11,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:11,184 INFO L93 Difference]: Finished difference Result 2372 states and 3027 transitions. [2020-09-25 04:26:11,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:11,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 04:26:11,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:11,203 INFO L225 Difference]: With dead ends: 2372 [2020-09-25 04:26:11,203 INFO L226 Difference]: Without dead ends: 1507 [2020-09-25 04:26:11,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:11,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2020-09-25 04:26:11,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1461. [2020-09-25 04:26:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2020-09-25 04:26:11,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1822 transitions. [2020-09-25 04:26:11,285 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1822 transitions. Word has length 142 [2020-09-25 04:26:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:11,286 INFO L479 AbstractCegarLoop]: Abstraction has 1461 states and 1822 transitions. [2020-09-25 04:26:11,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:11,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1822 transitions. [2020-09-25 04:26:11,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 04:26:11,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:11,297 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:11,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:26:11,298 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:11,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:11,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1151473867, now seen corresponding path program 1 times [2020-09-25 04:26:11,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:11,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712728641] [2020-09-25 04:26:11,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:11,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:16,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 04:26:16,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:16,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:26:16,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:16,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:16,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:16,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 04:26:16,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 04:26:16,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:16,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:16,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:16,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:16,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:16,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:26:16,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:16,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:16,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:16,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:16,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:16,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:16,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:16,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:16,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:16,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:16,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:26:16,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:16,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:16,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:16,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:26:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:16,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:16,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 04:26:16,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:16,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 04:26:16,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:16,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:26:16,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 04:26:16,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712728641] [2020-09-25 04:26:16,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:16,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:16,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792070200] [2020-09-25 04:26:16,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:16,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:16,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:16,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:16,715 INFO L87 Difference]: Start difference. First operand 1461 states and 1822 transitions. Second operand 5 states. [2020-09-25 04:26:18,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:18,724 INFO L93 Difference]: Finished difference Result 3209 states and 4105 transitions. [2020-09-25 04:26:18,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:18,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 04:26:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:18,737 INFO L225 Difference]: With dead ends: 3209 [2020-09-25 04:26:18,738 INFO L226 Difference]: Without dead ends: 1913 [2020-09-25 04:26:18,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:18,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2020-09-25 04:26:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1606. [2020-09-25 04:26:18,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-09-25 04:26:18,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2028 transitions. [2020-09-25 04:26:18,813 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2028 transitions. Word has length 189 [2020-09-25 04:26:18,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:18,814 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2028 transitions. [2020-09-25 04:26:18,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2028 transitions. [2020-09-25 04:26:18,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 04:26:18,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:18,825 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:18,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:26:18,825 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:18,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:18,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1668073877, now seen corresponding path program 1 times [2020-09-25 04:26:18,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:18,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251456861] [2020-09-25 04:26:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:18,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:18,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:20,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:20,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 04:26:20,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:26:20,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2033 [2020-09-25 04:26:20,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:20,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:20,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 04:26:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:26:20,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:20,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:21,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:21,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:21,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:21,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:26:21,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:21,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:21,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:21,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:21,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:21,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:21,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:26:21,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:21,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:26:21,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:21,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:21,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:21,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 04:26:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:21,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:21,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:21,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:26:21,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:21,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:21,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:26:21,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:21,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 04:26:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:21,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 04:26:21,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 04:26:21,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:21,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:21,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:21,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:21,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 04:26:21,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 04:26:21,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251456861] [2020-09-25 04:26:21,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:21,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:26:21,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639790758] [2020-09-25 04:26:21,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:21,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:21,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:21,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:21,367 INFO L87 Difference]: Start difference. First operand 1606 states and 2028 transitions. Second operand 7 states. [2020-09-25 04:26:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:24,096 INFO L93 Difference]: Finished difference Result 4054 states and 5213 transitions. [2020-09-25 04:26:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:26:24,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-09-25 04:26:24,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:24,111 INFO L225 Difference]: With dead ends: 4054 [2020-09-25 04:26:24,111 INFO L226 Difference]: Without dead ends: 2472 [2020-09-25 04:26:24,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:26:24,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2020-09-25 04:26:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1966. [2020-09-25 04:26:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-25 04:26:24,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2458 transitions. [2020-09-25 04:26:24,194 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2458 transitions. Word has length 217 [2020-09-25 04:26:24,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:24,194 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 2458 transitions. [2020-09-25 04:26:24,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2458 transitions. [2020-09-25 04:26:24,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 04:26:24,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:24,207 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:24,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:26:24,208 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:24,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:24,208 INFO L82 PathProgramCache]: Analyzing trace with hash -205673884, now seen corresponding path program 1 times [2020-09-25 04:26:24,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:24,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519347304] [2020-09-25 04:26:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:24,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:29,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 04:26:29,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:26:29,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4989 [2020-09-25 04:26:29,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:29,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 04:26:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 04:26:29,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:29,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:29,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:29,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:29,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:29,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:26:29,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:29,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:29,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:29,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:29,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:29,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:29,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:29,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:29,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 04:26:29,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 04:26:29,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:29,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:29,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:26:29,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:29,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 04:26:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:29,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 04:26:29,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 04:26:29,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:29,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 04:26:29,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:26:29,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519347304] [2020-09-25 04:26:29,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:29,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:26:29,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409505812] [2020-09-25 04:26:29,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:29,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:29,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:29,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:29,682 INFO L87 Difference]: Start difference. First operand 1966 states and 2458 transitions. Second operand 7 states. [2020-09-25 04:26:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:32,261 INFO L93 Difference]: Finished difference Result 4703 states and 5986 transitions. [2020-09-25 04:26:32,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:26:32,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-25 04:26:32,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:32,280 INFO L225 Difference]: With dead ends: 4703 [2020-09-25 04:26:32,281 INFO L226 Difference]: Without dead ends: 2761 [2020-09-25 04:26:32,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:26:32,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2020-09-25 04:26:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2403. [2020-09-25 04:26:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2020-09-25 04:26:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 2932 transitions. [2020-09-25 04:26:32,420 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 2932 transitions. Word has length 222 [2020-09-25 04:26:32,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:32,421 INFO L479 AbstractCegarLoop]: Abstraction has 2403 states and 2932 transitions. [2020-09-25 04:26:32,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:32,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 2932 transitions. [2020-09-25 04:26:32,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 04:26:32,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:32,439 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:32,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:26:32,439 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:32,440 INFO L82 PathProgramCache]: Analyzing trace with hash -605140127, now seen corresponding path program 1 times [2020-09-25 04:26:32,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:32,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722011060] [2020-09-25 04:26:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:32,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:32,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:33,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:33,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:33,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking...