/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:03:40,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:03:40,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:03:40,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:03:40,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:03:40,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:03:40,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:03:40,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:03:40,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:03:40,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:03:40,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:03:40,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:03:40,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:03:40,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:03:40,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:03:40,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:03:40,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:03:40,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:03:40,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:03:40,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:03:40,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:03:40,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:03:40,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:03:40,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:03:40,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:03:40,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:03:40,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:03:40,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:03:40,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:03:40,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:03:40,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:03:40,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:03:40,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:03:40,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:03:40,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:03:40,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:03:40,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:03:40,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:03:40,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:03:40,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:03:40,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:03:40,441 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 09:03:40,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:03:40,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:03:40,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:03:40,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:03:40,477 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:03:40,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:03:40,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:03:40,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:03:40,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:03:40,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:03:40,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:03:40,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:03:40,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:03:40,480 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:03:40,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:03:40,480 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:03:40,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:03:40,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:03:40,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:03:40,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:03:40,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:03:40,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:03:40,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:03:40,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:03:40,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:03:40,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:03:40,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:03:40,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:03:40,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:03:40,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:03:40,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:03:40,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:03:40,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:03:40,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:03:40,962 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:03:40,963 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 09:03:41,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/baa3395f8/40ceef80caab44248d063cdb60632704/FLAGf03c84c1d [2020-09-25 09:03:41,736 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:03:41,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 09:03:41,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/baa3395f8/40ceef80caab44248d063cdb60632704/FLAGf03c84c1d [2020-09-25 09:03:41,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/baa3395f8/40ceef80caab44248d063cdb60632704 [2020-09-25 09:03:41,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:03:41,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:03:41,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:41,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:03:41,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:03:41,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:41" (1/1) ... [2020-09-25 09:03:41,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:41, skipping insertion in model container [2020-09-25 09:03:41,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:41" (1/1) ... [2020-09-25 09:03:42,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:03:42,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:03:42,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:42,577 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:03:42,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:42,831 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:03:42,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:42 WrapperNode [2020-09-25 09:03:42,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:42,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:03:42,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:03:42,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:03:42,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:42" (1/1) ... [2020-09-25 09:03:42,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:42" (1/1) ... [2020-09-25 09:03:42,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:42" (1/1) ... [2020-09-25 09:03:42,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:42" (1/1) ... [2020-09-25 09:03:42,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:42" (1/1) ... [2020-09-25 09:03:42,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:42" (1/1) ... [2020-09-25 09:03:42,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:42" (1/1) ... [2020-09-25 09:03:42,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:03:42,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:03:42,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:03:42,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:03:42,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:42" (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 09:03:43,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:03:43,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:03:43,069 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:03:43,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:03:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:03:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:03:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:03:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:03:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:03:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:03:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:03:44,403 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:03:44,403 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:03:44,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:44 BoogieIcfgContainer [2020-09-25 09:03:44,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:03:44,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:03:44,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:03:44,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:03:44,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:03:41" (1/3) ... [2020-09-25 09:03:44,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:44, skipping insertion in model container [2020-09-25 09:03:44,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:42" (2/3) ... [2020-09-25 09:03:44,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:44, skipping insertion in model container [2020-09-25 09:03:44,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:44" (3/3) ... [2020-09-25 09:03:44,422 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label46.c [2020-09-25 09:03:44,434 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:03:44,445 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:03:44,467 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:03:44,500 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:03:44,500 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:03:44,500 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:03:44,500 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:03:44,500 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:03:44,501 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:03:44,501 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:03:44,501 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:03:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:03:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 09:03:44,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:44,564 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] [2020-09-25 09:03:44,564 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:44,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:44,572 INFO L82 PathProgramCache]: Analyzing trace with hash -87322735, now seen corresponding path program 1 times [2020-09-25 09:03:44,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:44,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 09:03:44,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:44,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:45,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:46,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:47,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:48,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:48,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:49,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:49,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 09:03:49,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:03:49,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 09:03:49,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:49,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:03:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 09:03:49,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:03:50,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:50,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:50,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:50,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:50,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:50,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:03:50,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:50,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:03:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:50,168 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 09:03:50,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 09:03:50,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:03:50,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:03:50,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070743728] [2020-09-25 09:03:50,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:03:50,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:50,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:03:50,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:50,203 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 09:03:52,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:52,935 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 09:03:52,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:03:52,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 09:03:52,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:52,975 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 09:03:52,975 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 09:03:52,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:03:53,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 09:03:53,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 09:03:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 09:03:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 09:03:53,162 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 138 [2020-09-25 09:03:53,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:53,166 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 09:03:53,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:03:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 09:03:53,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 09:03:53,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:53,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:53,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:03:53,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:53,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:53,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1674375397, now seen corresponding path program 1 times [2020-09-25 09:03:53,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:53,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836965167] [2020-09-25 09:03:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:54,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:57,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:57,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:58,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:58,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 09:03:58,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:03:58,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 09:03:58,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:58,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:58,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 09:03:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 09:03:58,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:58,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:58,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:58,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:58,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:58,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:58,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:03:58,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:58,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:58,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 09:03:58,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:58,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:58,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:58,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:03:58,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:58,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:03:58,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:58,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 09:03:58,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:03:58,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836965167] [2020-09-25 09:03:58,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:58,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:03:58,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050415094] [2020-09-25 09:03:58,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:03:58,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:58,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:03:58,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:58,642 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 09:04:00,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:00,759 INFO L93 Difference]: Finished difference Result 1806 states and 2276 transitions. [2020-09-25 09:04:00,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:00,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 09:04:00,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:00,769 INFO L225 Difference]: With dead ends: 1806 [2020-09-25 09:04:00,770 INFO L226 Difference]: Without dead ends: 1095 [2020-09-25 09:04:00,773 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 09:04:00,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-09-25 09:04:00,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1039. [2020-09-25 09:04:00,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 09:04:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1246 transitions. [2020-09-25 09:04:00,818 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1246 transitions. Word has length 156 [2020-09-25 09:04:00,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:00,820 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1246 transitions. [2020-09-25 09:04:00,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:00,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1246 transitions. [2020-09-25 09:04:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 09:04:00,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:00,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:00,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:00,825 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:00,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:00,826 INFO L82 PathProgramCache]: Analyzing trace with hash -873577392, now seen corresponding path program 1 times [2020-09-25 09:04:00,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:00,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298610810] [2020-09-25 09:04:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:00,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:00,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:01,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:01,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:01,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:02,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:03,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:05,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:05,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 09:04:05,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:04:05,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 09:04:05,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:05,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 09:04:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 09:04:05,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:05,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:06,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:06,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:06,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:06,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:06,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:04:06,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:06,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:06,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:06,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:06,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:06,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:04:06,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:06,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:04:06,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:06,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:06,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:04:06,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:06,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298610810] [2020-09-25 09:04:06,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:06,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:06,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608729613] [2020-09-25 09:04:06,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:06,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:06,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:06,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:06,158 INFO L87 Difference]: Start difference. First operand 1039 states and 1246 transitions. Second operand 5 states. [2020-09-25 09:04:08,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:08,510 INFO L93 Difference]: Finished difference Result 2705 states and 3410 transitions. [2020-09-25 09:04:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:08,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-09-25 09:04:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:08,521 INFO L225 Difference]: With dead ends: 2705 [2020-09-25 09:04:08,521 INFO L226 Difference]: Without dead ends: 1688 [2020-09-25 09:04:08,526 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 09:04:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-09-25 09:04:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1648. [2020-09-25 09:04:08,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-09-25 09:04:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 1962 transitions. [2020-09-25 09:04:08,589 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 1962 transitions. Word has length 162 [2020-09-25 09:04:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:08,590 INFO L479 AbstractCegarLoop]: Abstraction has 1648 states and 1962 transitions. [2020-09-25 09:04:08,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 1962 transitions. [2020-09-25 09:04:08,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 09:04:08,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:08,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:08,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:04:08,598 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:08,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:08,599 INFO L82 PathProgramCache]: Analyzing trace with hash -997660219, now seen corresponding path program 1 times [2020-09-25 09:04:08,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:08,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062058135] [2020-09-25 09:04:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:08,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:08,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:09,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:09,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:10,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:10,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:13,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:13,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 09:04:13,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:04:13,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:04:13,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:13,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:13,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 09:04:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 09:04:13,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:13,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:13,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:13,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:13,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:13,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:13,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:04:13,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:13,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:13,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:13,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:13,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:13,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:13,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 09:04:13,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:13,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 09:04:13,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:13,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:13,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 09:04:13,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:13,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062058135] [2020-09-25 09:04:13,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:13,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:13,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339168805] [2020-09-25 09:04:13,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:13,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:13,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:13,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:13,965 INFO L87 Difference]: Start difference. First operand 1648 states and 1962 transitions. Second operand 5 states. [2020-09-25 09:04:16,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:16,315 INFO L93 Difference]: Finished difference Result 4518 states and 5602 transitions. [2020-09-25 09:04:16,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:16,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 09:04:16,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:16,350 INFO L225 Difference]: With dead ends: 4518 [2020-09-25 09:04:16,350 INFO L226 Difference]: Without dead ends: 2892 [2020-09-25 09:04:16,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-09-25 09:04:16,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2726. [2020-09-25 09:04:16,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2726 states. [2020-09-25 09:04:16,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3280 transitions. [2020-09-25 09:04:16,475 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3280 transitions. Word has length 173 [2020-09-25 09:04:16,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:16,476 INFO L479 AbstractCegarLoop]: Abstraction has 2726 states and 3280 transitions. [2020-09-25 09:04:16,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:16,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3280 transitions. [2020-09-25 09:04:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 09:04:16,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:16,489 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:16,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:04:16,489 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:16,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:16,490 INFO L82 PathProgramCache]: Analyzing trace with hash 911650778, now seen corresponding path program 1 times [2020-09-25 09:04:16,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:16,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835406274] [2020-09-25 09:04:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:16,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:16,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:21,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:21,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 09:04:21,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:04:21,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 09:04:21,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:21,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:21,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 09:04:21,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 09:04:21,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:21,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:21,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:21,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:21,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:21,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:04:21,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:21,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:21,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:21,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:21,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:21,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:21,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:21,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:21,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:04:21,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:21,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:21,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:21,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:21,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:04:21,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:21,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:04:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:21,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:21,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 09:04:21,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:21,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 09:04:21,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:21,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:21,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:21,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:04:21,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:04:21,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835406274] [2020-09-25 09:04:21,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:21,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:04:21,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399224848] [2020-09-25 09:04:21,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:04:21,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:21,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:04:21,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:21,833 INFO L87 Difference]: Start difference. First operand 2726 states and 3280 transitions. Second operand 7 states. [2020-09-25 09:04:24,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:24,783 INFO L93 Difference]: Finished difference Result 6124 states and 7542 transitions. [2020-09-25 09:04:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:04:24,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 09:04:24,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:24,801 INFO L225 Difference]: With dead ends: 6124 [2020-09-25 09:04:24,802 INFO L226 Difference]: Without dead ends: 3081 [2020-09-25 09:04:24,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:04:24,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2020-09-25 09:04:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 2727. [2020-09-25 09:04:24,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-09-25 09:04:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3160 transitions. [2020-09-25 09:04:24,895 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3160 transitions. Word has length 181 [2020-09-25 09:04:24,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:24,896 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3160 transitions. [2020-09-25 09:04:24,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:04:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3160 transitions. [2020-09-25 09:04:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 09:04:24,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:24,906 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] [2020-09-25 09:04:24,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:04:24,906 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:24,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:24,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1324494398, now seen corresponding path program 1 times [2020-09-25 09:04:24,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:24,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043018422] [2020-09-25 09:04:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:25,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:25,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:25,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:28,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:28,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking...