/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=0.1 --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_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:08:41,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:08:41,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:08:41,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:08:41,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:08:41,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:08:41,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:08:41,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:08:41,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:08:41,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:08:41,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:08:41,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:08:41,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:08:41,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:08:41,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:08:41,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:08:41,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:08:41,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:08:41,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:08:41,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:08:41,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:08:41,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:08:41,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:08:41,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:08:41,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:08:41,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:08:41,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:08:41,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:08:41,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:08:41,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:08:41,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:08:41,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:08:41,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:08:41,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:08:41,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:08:41,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:08:41,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:08:41,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:08:41,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:08:42,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:08:42,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:08:42,004 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 10:08:42,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:08:42,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:08:42,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:08:42,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:08:42,066 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:08:42,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:08:42,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:08:42,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:08:42,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:08:42,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:08:42,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:08:42,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:08:42,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:08:42,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:08:42,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:08:42,071 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:08:42,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:08:42,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:08:42,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:08:42,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:08:42,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:08:42,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:42,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:08:42,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:08:42,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:08:42,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:08:42,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:08:42,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:08:42,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:08:42,076 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:08:42,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:08:42,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:08:42,586 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:08:42,588 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:08:42,588 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:08:42,589 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label14.c [2020-09-25 10:08:42,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d37072cb/683d6e34a16c4182b1afcd09c4d5a00c/FLAG908466800 [2020-09-25 10:08:43,343 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:08:43,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label14.c [2020-09-25 10:08:43,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d37072cb/683d6e34a16c4182b1afcd09c4d5a00c/FLAG908466800 [2020-09-25 10:08:43,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d37072cb/683d6e34a16c4182b1afcd09c4d5a00c [2020-09-25 10:08:43,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:08:43,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:08:43,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:43,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:08:43,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:08:43,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:43" (1/1) ... [2020-09-25 10:08:43,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4734e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:43, skipping insertion in model container [2020-09-25 10:08:43,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:43" (1/1) ... [2020-09-25 10:08:43,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:08:43,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:08:44,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:44,204 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:08:44,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:44,477 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:08:44,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44 WrapperNode [2020-09-25 10:08:44,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:44,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:08:44,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:08:44,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:08:44,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (1/1) ... [2020-09-25 10:08:44,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:08:44,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:08:44,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:08:44,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:08:44,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (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 10:08:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:08:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:08:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:08:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:08:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:08:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:08:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:08:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:08:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:08:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:08:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:08:46,084 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:08:46,084 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:08:46,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:46 BoogieIcfgContainer [2020-09-25 10:08:46,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:08:46,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:08:46,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:08:46,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:08:46,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:08:43" (1/3) ... [2020-09-25 10:08:46,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526e8696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:46, skipping insertion in model container [2020-09-25 10:08:46,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:44" (2/3) ... [2020-09-25 10:08:46,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526e8696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:46, skipping insertion in model container [2020-09-25 10:08:46,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:46" (3/3) ... [2020-09-25 10:08:46,104 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label14.c [2020-09-25 10:08:46,116 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:08:46,127 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:08:46,151 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:08:46,192 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:08:46,193 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:08:46,194 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:08:46,194 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:08:46,194 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:08:46,194 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:08:46,194 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:08:46,194 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:08:46,229 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:08:46,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 10:08:46,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:46,253 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] [2020-09-25 10:08:46,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:46,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:46,261 INFO L82 PathProgramCache]: Analyzing trace with hash 569136050, now seen corresponding path program 1 times [2020-09-25 10:08:46,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:46,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436210047] [2020-09-25 10:08:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:46,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:46,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:47,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:48,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:50,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:51,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:51,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:51,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 10:08:51,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:08:51,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 10:08:51,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:51,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:08:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:08:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 10:08:51,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:08:51,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:51,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:51,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:51,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:51,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:51,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:08:51,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:51,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:51,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:51,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:51,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:08:51,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:08:51,988 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 10:08:51,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436210047] [2020-09-25 10:08:51,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:08:51,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:08:51,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436821309] [2020-09-25 10:08:52,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:08:52,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:52,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:08:52,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:08:52,025 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:08:54,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:54,275 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 10:08:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:08:54,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 10:08:54,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:54,325 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 10:08:54,325 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 10:08:54,339 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 10:08:54,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 10:08:54,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 10:08:54,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 10:08:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 10:08:54,476 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 143 [2020-09-25 10:08:54,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:54,477 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 10:08:54,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:08:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 10:08:54,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 10:08:54,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:54,487 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] [2020-09-25 10:08:54,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:08:54,487 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:54,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:54,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1046453143, now seen corresponding path program 1 times [2020-09-25 10:08:54,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:54,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931715565] [2020-09-25 10:08:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:54,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:54,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:55,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:59,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:59,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 10:08:59,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:08:59,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:08:59,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:59,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:59,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:08:59,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:08:59,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:08:59,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:59,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:59,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:59,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:59,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:59,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:59,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:08:59,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:59,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:08:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:59,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:59,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:00,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:00,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:00,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:09:00,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 10:09:00,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:00,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:09:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:09:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:00,340 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 10:09:00,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931715565] [2020-09-25 10:09:00,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:00,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:09:00,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217365922] [2020-09-25 10:09:00,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:09:00,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:00,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:09:00,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:09:00,345 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 11 states. [2020-09-25 10:09:03,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:03,857 INFO L93 Difference]: Finished difference Result 1381 states and 1829 transitions. [2020-09-25 10:09:03,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:09:03,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2020-09-25 10:09:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:03,867 INFO L225 Difference]: With dead ends: 1381 [2020-09-25 10:09:03,868 INFO L226 Difference]: Without dead ends: 689 [2020-09-25 10:09:03,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:09:03,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-09-25 10:09:03,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 521. [2020-09-25 10:09:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-09-25 10:09:03,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 585 transitions. [2020-09-25 10:09:03,907 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 585 transitions. Word has length 177 [2020-09-25 10:09:03,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:03,907 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 585 transitions. [2020-09-25 10:09:03,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:09:03,907 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 585 transitions. [2020-09-25 10:09:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 10:09:03,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:03,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:03,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:09:03,912 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:03,912 INFO L82 PathProgramCache]: Analyzing trace with hash 139340650, now seen corresponding path program 1 times [2020-09-25 10:09:03,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:03,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731482782] [2020-09-25 10:09:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:03,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:04,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:04,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:05,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:05,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:06,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:07,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:08,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:08,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 10:09:08,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:09:08,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:09:08,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:08,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:08,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:08,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 10:09:08,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 10:09:08,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:09,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:09,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:09,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:09,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:09,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:09:09,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:09,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:09,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:09:09,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:09,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:09:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:09,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:09,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:09:09,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:09,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 10:09:09,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:09,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:09,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:09,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:09,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 10:09:09,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:09,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731482782] [2020-09-25 10:09:09,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:09,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:09:09,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500318402] [2020-09-25 10:09:09,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:09:09,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:09,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:09:09,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:09:09,224 INFO L87 Difference]: Start difference. First operand 521 states and 585 transitions. Second operand 5 states. [2020-09-25 10:09:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:11,277 INFO L93 Difference]: Finished difference Result 1414 states and 1625 transitions. [2020-09-25 10:09:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:09:11,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 10:09:11,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:11,283 INFO L225 Difference]: With dead ends: 1414 [2020-09-25 10:09:11,283 INFO L226 Difference]: Without dead ends: 718 [2020-09-25 10:09:11,286 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 10:09:11,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-09-25 10:09:11,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 644. [2020-09-25 10:09:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2020-09-25 10:09:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 740 transitions. [2020-09-25 10:09:11,316 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 740 transitions. Word has length 181 [2020-09-25 10:09:11,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:11,317 INFO L479 AbstractCegarLoop]: Abstraction has 644 states and 740 transitions. [2020-09-25 10:09:11,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:09:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 740 transitions. [2020-09-25 10:09:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 10:09:11,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:11,322 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, 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, 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 10:09:11,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:09:11,322 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:11,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:11,323 INFO L82 PathProgramCache]: Analyzing trace with hash -127875039, now seen corresponding path program 1 times [2020-09-25 10:09:11,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:11,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189849826] [2020-09-25 10:09:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:11,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:12,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:14,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:15,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:16,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 10:09:16,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:09:16,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:09:16,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:16,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:16,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:09:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:09:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-09-25 10:09:16,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:16,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:16,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:16,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:16,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:16,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 10:09:16,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:16,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:16,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:16,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:16,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:17,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:17,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:09:17,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:17,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-09-25 10:09:17,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:17,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:09:17,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:17,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189849826] [2020-09-25 10:09:17,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:17,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:09:17,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944069631] [2020-09-25 10:09:17,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:09:17,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:17,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:09:17,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:09:17,369 INFO L87 Difference]: Start difference. First operand 644 states and 740 transitions. Second operand 14 states. [2020-09-25 10:09:17,731 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-09-25 10:09:24,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:24,291 INFO L93 Difference]: Finished difference Result 2405 states and 3052 transitions. [2020-09-25 10:09:24,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 10:09:24,292 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 224 [2020-09-25 10:09:24,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:24,306 INFO L225 Difference]: With dead ends: 2405 [2020-09-25 10:09:24,306 INFO L226 Difference]: Without dead ends: 1783 [2020-09-25 10:09:24,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=259, Invalid=863, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 10:09:24,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2020-09-25 10:09:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1647. [2020-09-25 10:09:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1647 states. [2020-09-25 10:09:24,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 1899 transitions. [2020-09-25 10:09:24,373 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 1899 transitions. Word has length 224 [2020-09-25 10:09:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:24,374 INFO L479 AbstractCegarLoop]: Abstraction has 1647 states and 1899 transitions. [2020-09-25 10:09:24,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:09:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 1899 transitions. [2020-09-25 10:09:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 10:09:24,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:24,384 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 10:09:24,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:09:24,384 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:24,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1633762342, now seen corresponding path program 1 times [2020-09-25 10:09:24,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:24,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008399674] [2020-09-25 10:09:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:24,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:24,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:24,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:26,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:27,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:28,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:29,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:29,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 10:09:29,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:09:29,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 10:09:29,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:29,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-09-25 10:09:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 10:09:29,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:29,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:29,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:29,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:29,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:09:29,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:29,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:09:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:09:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:29,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:29,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:29,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:29,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:09:29,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:29,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:09:29,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:29,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:09:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:29,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:09:29,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:29,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:09:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:29,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:29,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:29,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:09:29,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:29,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 10:09:29,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:29,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 10:09:29,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 10:09:29,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008399674] [2020-09-25 10:09:29,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:29,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:09:29,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731983543] [2020-09-25 10:09:29,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:09:29,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:29,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:09:29,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:09:29,896 INFO L87 Difference]: Start difference. First operand 1647 states and 1899 transitions. Second operand 5 states. [2020-09-25 10:09:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:31,445 INFO L93 Difference]: Finished difference Result 3782 states and 4542 transitions. [2020-09-25 10:09:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:09:31,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-09-25 10:09:31,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:31,447 INFO L225 Difference]: With dead ends: 3782 [2020-09-25 10:09:31,447 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:09:31,458 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 10:09:31,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:09:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:09:31,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:09:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:09:31,459 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2020-09-25 10:09:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:31,460 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:09:31,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:09:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:09:31,460 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:09:31,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:09:31,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:09:32,292 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 46 [2020-09-25 10:09:32,512 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 46 [2020-09-25 10:09:33,021 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 65 [2020-09-25 10:09:33,288 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46