/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/Problem10_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:29,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:29,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:29,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:29,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:29,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:29,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:29,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:29,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:29,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:29,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:29,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:29,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:29,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:29,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:29,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:29,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:29,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:29,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:29,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:29,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:29,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:29,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:29,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:29,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:29,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:29,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:29,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:29,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:29,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:29,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:30,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:30,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:30,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:30,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:30,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:30,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:30,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:30,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:30,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:30,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:30,009 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 10:12:30,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:30,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:30,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:30,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:30,059 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:30,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:30,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:30,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:30,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:30,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:30,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:30,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:30,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:30,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:30,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:30,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:30,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:30,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:30,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:30,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:30,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:30,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:30,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:30,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:30,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:30,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:30,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:30,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:30,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:30,065 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 10:12:30,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:30,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:30,543 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:30,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:30,545 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:30,546 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 10:12:30,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bbe81030/1e7cdfd8a3f54667bef20d960f64fe5e/FLAG78736cb9e [2020-09-25 10:12:31,321 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:31,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 10:12:31,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bbe81030/1e7cdfd8a3f54667bef20d960f64fe5e/FLAG78736cb9e [2020-09-25 10:12:31,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bbe81030/1e7cdfd8a3f54667bef20d960f64fe5e [2020-09-25 10:12:31,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:31,595 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:31,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:31,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:31,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:31,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:31" (1/1) ... [2020-09-25 10:12:31,609 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 10:12:31, skipping insertion in model container [2020-09-25 10:12:31,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:31" (1/1) ... [2020-09-25 10:12:31,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:31,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:32,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:32,292 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:32,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:32,439 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:32,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:32 WrapperNode [2020-09-25 10:12:32,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:32,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:32,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:32,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:32,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:32" (1/1) ... [2020-09-25 10:12:32,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:32" (1/1) ... [2020-09-25 10:12:32,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:32" (1/1) ... [2020-09-25 10:12:32,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:32" (1/1) ... [2020-09-25 10:12:32,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:32" (1/1) ... [2020-09-25 10:12:32,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:32" (1/1) ... [2020-09-25 10:12:32,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:32" (1/1) ... [2020-09-25 10:12:32,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:32,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:32,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:32,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:32,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:32" (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 10:12:32,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:32,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:32,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:32,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:34,305 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:34,305 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:34,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:34 BoogieIcfgContainer [2020-09-25 10:12:34,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:34,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:34,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:34,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:34,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:31" (1/3) ... [2020-09-25 10:12:34,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56305be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:34, skipping insertion in model container [2020-09-25 10:12:34,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:32" (2/3) ... [2020-09-25 10:12:34,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56305be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:34, skipping insertion in model container [2020-09-25 10:12:34,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:34" (3/3) ... [2020-09-25 10:12:34,334 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-09-25 10:12:34,346 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:34,360 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:34,384 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:34,425 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:34,426 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:34,426 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:34,426 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:34,426 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:34,427 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:34,427 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:34,427 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 10:12:34,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:34,471 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] [2020-09-25 10:12:34,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:34,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:34,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1046899727, now seen corresponding path program 1 times [2020-09-25 10:12:34,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:34,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134904440] [2020-09-25 10:12:34,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:35,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:35,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:12:35,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:35,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-09-25 10:12:35,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:35,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 10:12:35,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:12:35,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:35,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:35,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:35,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:35,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:35,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:12:35,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:35,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:35,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:35,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:35,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:12:35,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:35,526 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 10:12:35,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134904440] [2020-09-25 10:12:35,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:35,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:12:35,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681656298] [2020-09-25 10:12:35,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:12:35,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:35,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:12:35,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:35,562 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 10:12:38,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:38,382 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 10:12:38,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:12:38,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-09-25 10:12:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:38,411 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 10:12:38,411 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 10:12:38,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:38,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 10:12:38,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 10:12:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 10:12:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 10:12:38,544 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 68 [2020-09-25 10:12:38,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:38,545 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 10:12:38,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:12:38,546 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 10:12:38,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 10:12:38,557 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:38,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:38,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:12:38,558 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:38,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:38,558 INFO L82 PathProgramCache]: Analyzing trace with hash -160289432, now seen corresponding path program 1 times [2020-09-25 10:12:38,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:38,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615585041] [2020-09-25 10:12:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:38,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:38,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:39,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:39,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:40,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:40,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:43,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 10:12:43,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:12:43,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 10:12:43,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:43,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:12:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 10:12:43,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:43,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:43,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:43,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 10:12:43,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:43,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:12:43,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:44,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:44,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:12:44,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:44,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 10:12:44,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:44,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 10:12:44,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:44,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615585041] [2020-09-25 10:12:44,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:44,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:12:44,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624174902] [2020-09-25 10:12:44,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:12:44,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:44,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:12:44,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:12:44,309 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 11 states. [2020-09-25 10:12:47,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:47,120 INFO L93 Difference]: Finished difference Result 1731 states and 2374 transitions. [2020-09-25 10:12:47,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:12:47,125 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 151 [2020-09-25 10:12:47,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:47,135 INFO L225 Difference]: With dead ends: 1731 [2020-09-25 10:12:47,136 INFO L226 Difference]: Without dead ends: 1009 [2020-09-25 10:12:47,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:12:47,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-09-25 10:12:47,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 839. [2020-09-25 10:12:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2020-09-25 10:12:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1080 transitions. [2020-09-25 10:12:47,203 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1080 transitions. Word has length 151 [2020-09-25 10:12:47,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:47,204 INFO L479 AbstractCegarLoop]: Abstraction has 839 states and 1080 transitions. [2020-09-25 10:12:47,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:12:47,204 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1080 transitions. [2020-09-25 10:12:47,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 10:12:47,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:47,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:47,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:12:47,226 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:47,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:47,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1824017853, now seen corresponding path program 1 times [2020-09-25 10:12:47,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:47,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215387661] [2020-09-25 10:12:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:47,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:47,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:47,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:49,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:51,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:51,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 10:12:51,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:12:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4465 [2020-09-25 10:12:51,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:51,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:51,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:12:51,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:51,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 10:12:51,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:51,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:51,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:51,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:51,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:51,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:51,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:12:51,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:51,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:51,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:51,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:51,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:51,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:51,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:51,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:52,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:52,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:52,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:52,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 10:12:52,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:52,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:12:52,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:52,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215387661] [2020-09-25 10:12:52,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:52,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:12:52,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52150545] [2020-09-25 10:12:52,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:12:52,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:52,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:12:52,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:12:52,372 INFO L87 Difference]: Start difference. First operand 839 states and 1080 transitions. Second operand 8 states. [2020-09-25 10:12:55,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:55,582 INFO L93 Difference]: Finished difference Result 2753 states and 3791 transitions. [2020-09-25 10:12:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:12:55,583 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 157 [2020-09-25 10:12:55,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:55,602 INFO L225 Difference]: With dead ends: 2753 [2020-09-25 10:12:55,602 INFO L226 Difference]: Without dead ends: 1929 [2020-09-25 10:12:55,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:12:55,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2020-09-25 10:12:55,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1655. [2020-09-25 10:12:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1655 states. [2020-09-25 10:12:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2233 transitions. [2020-09-25 10:12:55,731 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2233 transitions. Word has length 157 [2020-09-25 10:12:55,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:55,733 INFO L479 AbstractCegarLoop]: Abstraction has 1655 states and 2233 transitions. [2020-09-25 10:12:55,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:12:55,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2233 transitions. [2020-09-25 10:12:55,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 10:12:55,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:55,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:55,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:55,743 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:55,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:55,744 INFO L82 PathProgramCache]: Analyzing trace with hash -835987883, now seen corresponding path program 1 times [2020-09-25 10:12:55,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:55,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664088204] [2020-09-25 10:12:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:55,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:55,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:56,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:59,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 10:12:59,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:12:59,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3659 [2020-09-25 10:12:59,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:59,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:12:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 10:12:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:59,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:59,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:59,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:59,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:12:59,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:59,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:12:59,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:59,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:59,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 10:12:59,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:59,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 10:12:59,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:59,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:59,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:59,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:59,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 10:12:59,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:59,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664088204] [2020-09-25 10:12:59,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:59,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:12:59,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942617045] [2020-09-25 10:12:59,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:12:59,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:59,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:12:59,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:59,802 INFO L87 Difference]: Start difference. First operand 1655 states and 2233 transitions. Second operand 7 states. [2020-09-25 10:13:02,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:02,004 INFO L93 Difference]: Finished difference Result 4155 states and 5902 transitions. [2020-09-25 10:13:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:13:02,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-09-25 10:13:02,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:02,020 INFO L225 Difference]: With dead ends: 4155 [2020-09-25 10:13:02,020 INFO L226 Difference]: Without dead ends: 2515 [2020-09-25 10:13:02,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:13:02,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2020-09-25 10:13:02,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2285. [2020-09-25 10:13:02,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2285 states. [2020-09-25 10:13:02,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2285 states to 2285 states and 3012 transitions. [2020-09-25 10:13:02,108 INFO L78 Accepts]: Start accepts. Automaton has 2285 states and 3012 transitions. Word has length 166 [2020-09-25 10:13:02,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:02,108 INFO L479 AbstractCegarLoop]: Abstraction has 2285 states and 3012 transitions. [2020-09-25 10:13:02,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:13:02,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2285 states and 3012 transitions. [2020-09-25 10:13:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 10:13:02,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:02,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:02,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:02,113 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:02,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:02,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1089799840, now seen corresponding path program 1 times [2020-09-25 10:13:02,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:02,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557255896] [2020-09-25 10:13:02,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:02,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:05,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:07,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:07,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 10:13:07,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:13:07,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 10:13:07,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:07,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:07,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:07,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:07,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 10:13:07,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:07,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:07,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:07,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:07,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:07,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:07,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:13:07,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:07,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:07,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:07,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:07,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:07,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:07,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 10:13:07,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:07,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-25 10:13:07,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:07,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 10:13:07,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:08,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557255896] [2020-09-25 10:13:08,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:08,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:13:08,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180748566] [2020-09-25 10:13:08,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:13:08,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:08,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:13:08,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:13:08,117 INFO L87 Difference]: Start difference. First operand 2285 states and 3012 transitions. Second operand 9 states. [2020-09-25 10:13:10,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:10,238 INFO L93 Difference]: Finished difference Result 4599 states and 6083 transitions. [2020-09-25 10:13:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:13:10,241 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2020-09-25 10:13:10,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:10,255 INFO L225 Difference]: With dead ends: 4599 [2020-09-25 10:13:10,255 INFO L226 Difference]: Without dead ends: 2291 [2020-09-25 10:13:10,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:13:10,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2020-09-25 10:13:10,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2275. [2020-09-25 10:13:10,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2275 states. [2020-09-25 10:13:10,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 2987 transitions. [2020-09-25 10:13:10,336 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 2987 transitions. Word has length 195 [2020-09-25 10:13:10,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:10,337 INFO L479 AbstractCegarLoop]: Abstraction has 2275 states and 2987 transitions. [2020-09-25 10:13:10,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:13:10,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 2987 transitions. [2020-09-25 10:13:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 10:13:10,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:10,344 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:10,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:13:10,344 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:10,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:10,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1985407006, now seen corresponding path program 1 times [2020-09-25 10:13:10,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:10,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784316217] [2020-09-25 10:13:10,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:10,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:10,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:13,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:15,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:15,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-25 10:13:15,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:13:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:13:15,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:15,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:13:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 10:13:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:15,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:15,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:15,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:15,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:15,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:15,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:13:15,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:15,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:15,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:15,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:15,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:15,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:15,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:15,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:15,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 10:13:15,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:15,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-25 10:13:15,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:15,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 10:13:15,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:15,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 10:13:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:15,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:16,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:16,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:16,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 10:13:16,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:16,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:13:16,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 10:13:16,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784316217] [2020-09-25 10:13:16,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:16,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:13:16,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775098398] [2020-09-25 10:13:16,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:13:16,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:16,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:13:16,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:13:16,392 INFO L87 Difference]: Start difference. First operand 2275 states and 2987 transitions. Second operand 11 states.