/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=SMALLESTAMONGWIDE --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/Problem02_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:17:40,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:17:40,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:17:40,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:17:40,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:17:40,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:17:40,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:17:40,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:17:40,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:17:40,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:17:40,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:17:40,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:17:40,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:17:40,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:17:40,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:17:40,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:17:40,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:17:40,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:17:40,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:17:40,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:17:40,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:17:40,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:17:40,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:17:40,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:17:40,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:17:40,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:17:40,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:17:40,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:17:40,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:17:40,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:17:40,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:17:40,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:17:40,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:17:40,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:17:40,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:17:40,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:17:40,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:17:40,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:17:40,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:17:40,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:17:40,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:17:40,933 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 11:17:40,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:17:40,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:17:40,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:17:40,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:17:40,990 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:17:40,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:17:40,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:17:40,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:17:40,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:17:40,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:17:40,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:17:40,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:17:40,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:17:40,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:17:40,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:17:40,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:17:40,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:17:40,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:17:40,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:17:40,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:17:40,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:17:40,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:40,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:17:40,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:17:40,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:17:40,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:17:40,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:17:40,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:17:40,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:17:40,997 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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:17:41,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:17:41,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:17:41,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:17:41,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:17:41,492 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:17:41,493 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 11:17:41,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7592ff4e8/8c8d8a8072e843c3a33fa505e54929ad/FLAGa4d9db898 [2020-09-25 11:17:42,267 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:17:42,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 11:17:42,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7592ff4e8/8c8d8a8072e843c3a33fa505e54929ad/FLAGa4d9db898 [2020-09-25 11:17:42,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7592ff4e8/8c8d8a8072e843c3a33fa505e54929ad [2020-09-25 11:17:42,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:17:42,541 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:17:42,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:42,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:17:42,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:17:42,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:42" (1/1) ... [2020-09-25 11:17:42,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f21738f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:42, skipping insertion in model container [2020-09-25 11:17:42,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:42" (1/1) ... [2020-09-25 11:17:42,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:17:42,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:17:43,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:43,208 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:17:43,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:43,363 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:17:43,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43 WrapperNode [2020-09-25 11:17:43,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:43,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:17:43,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:17:43,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:17:43,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:17:43,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:17:43,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:17:43,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:17:43,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (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 11:17:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:17:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:17:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:17:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:17:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:17:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:17:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:17:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:17:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:17:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:17:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:17:44,942 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:17:44,942 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:17:44,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:44 BoogieIcfgContainer [2020-09-25 11:17:44,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:17:44,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:17:44,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:17:44,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:17:44,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:17:42" (1/3) ... [2020-09-25 11:17:44,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213b13e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:44, skipping insertion in model container [2020-09-25 11:17:44,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (2/3) ... [2020-09-25 11:17:44,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213b13e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:44, skipping insertion in model container [2020-09-25 11:17:44,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:44" (3/3) ... [2020-09-25 11:17:44,963 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label53.c [2020-09-25 11:17:44,975 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:17:44,986 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:17:45,010 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:17:45,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:17:45,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:17:45,044 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:17:45,044 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:17:45,044 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:17:45,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:17:45,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:17:45,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:17:45,080 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:17:45,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 11:17:45,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:45,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:45,110 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:45,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:45,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1669931929, now seen corresponding path program 1 times [2020-09-25 11:17:45,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:45,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927843714] [2020-09-25 11:17:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:46,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:46,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:47,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:48,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:50,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:50,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 11:17:50,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:17:50,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 11:17:50,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:50,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:17:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 11:17:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:17:50,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:50,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:50,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:50,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:50,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:17:50,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:50,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:50,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:17:50,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:50,881 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 11:17:50,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927843714] [2020-09-25 11:17:50,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:17:50,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:17:50,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356871276] [2020-09-25 11:17:50,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:17:50,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:50,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:17:50,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:17:50,916 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:17:53,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:53,377 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 11:17:53,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:17:53,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-09-25 11:17:53,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:53,407 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 11:17:53,407 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 11:17:53,419 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 11:17:53,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 11:17:53,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 11:17:53,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 11:17:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 11:17:53,551 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 164 [2020-09-25 11:17:53,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:53,553 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 11:17:53,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:17:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 11:17:53,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 11:17:53,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:53,566 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:53,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:17:53,567 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:53,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:53,568 INFO L82 PathProgramCache]: Analyzing trace with hash 591184877, now seen corresponding path program 1 times [2020-09-25 11:17:53,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:53,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820824974] [2020-09-25 11:17:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:53,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:53,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:54,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:54,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:57,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:58,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 11:17:58,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:17:58,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-25 11:17:58,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:58,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 11:17:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 11:17:58,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:58,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:58,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:58,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:58,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:58,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 11:17:58,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:58,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:58,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:58,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:58,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 11:17:58,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:58,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:58,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:17:58,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:58,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:17:58,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:58,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:58,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 11:17:58,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:59,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820824974] [2020-09-25 11:17:59,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:59,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:17:59,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165406021] [2020-09-25 11:17:59,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:59,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:59,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:59,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:59,046 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 11:18:00,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:00,933 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 11:18:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:00,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 11:18:00,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:00,947 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 11:18:00,947 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 11:18:00,950 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 11:18:00,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 11:18:01,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 11:18:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 11:18:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 11:18:01,011 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 182 [2020-09-25 11:18:01,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:01,012 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 11:18:01,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:01,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 11:18:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 11:18:01,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:01,020 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:01,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:01,021 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:01,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:01,021 INFO L82 PathProgramCache]: Analyzing trace with hash 156773588, now seen corresponding path program 1 times [2020-09-25 11:18:01,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:01,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123726949] [2020-09-25 11:18:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:01,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:01,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:01,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:04,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:04,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:04,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:06,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:06,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 11:18:06,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:06,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 11:18:06,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:06,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:06,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:06,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 11:18:06,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 11:18:06,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:06,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:06,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:06,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:06,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:06,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:06,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:18:06,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:06,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:06,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:06,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:06,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:06,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:06,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:06,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:06,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:18:06,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:06,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 11:18:06,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:06,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:18:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:06,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123726949] [2020-09-25 11:18:06,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:06,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:18:06,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408588462] [2020-09-25 11:18:06,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:06,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:06,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:06,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:06,339 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 5 states. [2020-09-25 11:18:06,901 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-09-25 11:18:08,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:08,664 INFO L93 Difference]: Finished difference Result 2668 states and 3421 transitions. [2020-09-25 11:18:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:08,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-25 11:18:08,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:08,681 INFO L225 Difference]: With dead ends: 2668 [2020-09-25 11:18:08,682 INFO L226 Difference]: Without dead ends: 973 [2020-09-25 11:18:08,689 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 11:18:08,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-09-25 11:18:08,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 963. [2020-09-25 11:18:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-09-25 11:18:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1177 transitions. [2020-09-25 11:18:08,736 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1177 transitions. Word has length 198 [2020-09-25 11:18:08,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:08,737 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1177 transitions. [2020-09-25 11:18:08,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:08,737 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1177 transitions. [2020-09-25 11:18:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 11:18:08,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:08,746 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:08,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:08,746 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:08,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:08,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1119078680, now seen corresponding path program 1 times [2020-09-25 11:18:08,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:08,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686155558] [2020-09-25 11:18:08,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:08,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:08,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:09,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:13,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:13,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 11:18:13,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:18:13,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 11:18:13,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:13,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:13,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:18:13,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 11:18:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 11:18:13,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:14,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:14,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:14,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:14,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:14,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:18:14,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:14,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:14,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:14,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:14,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:14,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:18:14,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:14,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 11:18:14,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:14,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:18:14,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:14,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686155558] [2020-09-25 11:18:14,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:14,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:18:14,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004376138] [2020-09-25 11:18:14,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:18:14,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:14,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:18:14,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:18:14,410 INFO L87 Difference]: Start difference. First operand 963 states and 1177 transitions. Second operand 9 states. [2020-09-25 11:18:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:17,896 INFO L93 Difference]: Finished difference Result 3018 states and 3924 transitions. [2020-09-25 11:18:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:18:17,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 202 [2020-09-25 11:18:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:17,914 INFO L225 Difference]: With dead ends: 3018 [2020-09-25 11:18:17,914 INFO L226 Difference]: Without dead ends: 1984 [2020-09-25 11:18:17,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:18:17,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2020-09-25 11:18:17,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1932. [2020-09-25 11:18:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1932 states. [2020-09-25 11:18:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2319 transitions. [2020-09-25 11:18:18,001 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2319 transitions. Word has length 202 [2020-09-25 11:18:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:18,001 INFO L479 AbstractCegarLoop]: Abstraction has 1932 states and 2319 transitions. [2020-09-25 11:18:18,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:18:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2319 transitions. [2020-09-25 11:18:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 11:18:18,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:18,012 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:18,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:18,012 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:18,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1463653110, now seen corresponding path program 1 times [2020-09-25 11:18:18,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:18,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138114862] [2020-09-25 11:18:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:18,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:22,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 11:18:22,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:18:22,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4550 [2020-09-25 11:18:22,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:22,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:18:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 11:18:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:22,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:22,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:22,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:22,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:18:22,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:22,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:18:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:22,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:22,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:22,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:18:22,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:22,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:18:22,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:22,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:18:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:22,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:18:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:22,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:22,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 11:18:22,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:22,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 11:18:22,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:22,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:22,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 11:18:22,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 11:18:22,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138114862] [2020-09-25 11:18:22,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:22,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:18:22,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434937129] [2020-09-25 11:18:22,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:18:22,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:22,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:18:22,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:18:22,994 INFO L87 Difference]: Start difference. First operand 1932 states and 2319 transitions. Second operand 7 states. [2020-09-25 11:18:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:24,227 INFO L93 Difference]: Finished difference Result 3799 states and 4587 transitions. [2020-09-25 11:18:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:18:24,228 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-09-25 11:18:24,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:24,240 INFO L225 Difference]: With dead ends: 3799 [2020-09-25 11:18:24,240 INFO L226 Difference]: Without dead ends: 1889 [2020-09-25 11:18:24,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:18:24,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-09-25 11:18:24,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1869. [2020-09-25 11:18:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2020-09-25 11:18:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2228 transitions. [2020-09-25 11:18:24,307 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2228 transitions. Word has length 226 [2020-09-25 11:18:24,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:24,308 INFO L479 AbstractCegarLoop]: Abstraction has 1869 states and 2228 transitions. [2020-09-25 11:18:24,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:18:24,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2228 transitions. [2020-09-25 11:18:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 11:18:24,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:24,316 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:24,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:18:24,316 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:24,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:24,317 INFO L82 PathProgramCache]: Analyzing trace with hash -387844278, now seen corresponding path program 1 times [2020-09-25 11:18:24,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:24,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452656640] [2020-09-25 11:18:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:29,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:29,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 11:18:29,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:18:29,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:18:29,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:29,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:18:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 11:18:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:18:29,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:29,944 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-09-25 11:18:30,149 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-09-25 11:18:30,332 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 43