/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:56:41,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:56:41,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:56:41,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:56:41,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:56:41,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:56:41,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:56:41,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:56:41,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:56:41,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:56:41,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:56:41,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:56:41,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:56:41,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:56:41,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:56:41,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:56:41,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:56:41,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:56:41,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:56:41,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:56:41,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:56:41,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:56:41,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:56:41,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:56:41,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:56:41,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:56:41,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:56:41,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:56:41,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:56:41,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:56:41,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:56:41,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:56:41,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:56:41,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:56:41,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:56:41,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:56:41,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:56:41,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:56:41,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:56:41,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:56:41,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:56:41,493 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 07:56:41,519 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:56:41,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:56:41,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:56:41,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:56:41,522 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:56:41,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:56:41,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:56:41,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:56:41,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:56:41,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:56:41,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:56:41,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:56:41,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:56:41,524 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:56:41,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:56:41,524 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:56:41,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:56:41,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:56:41,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:56:41,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:56:41,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:56:41,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:41,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:56:41,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:56:41,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:56:41,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:56:41,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:56:41,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:56:41,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:56:41,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:56:42,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:56:42,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:56:42,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:56:42,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:56:42,073 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:56:42,074 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 07:56:42,177 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a5944dcf/d58025997672479c81fbbcb2b68f801d/FLAG7f08fb952 [2020-09-25 07:56:42,814 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:56:42,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 07:56:42,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a5944dcf/d58025997672479c81fbbcb2b68f801d/FLAG7f08fb952 [2020-09-25 07:56:43,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a5944dcf/d58025997672479c81fbbcb2b68f801d [2020-09-25 07:56:43,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:56:43,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:56:43,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:43,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:56:43,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:56:43,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:43" (1/1) ... [2020-09-25 07:56:43,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:43, skipping insertion in model container [2020-09-25 07:56:43,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:43" (1/1) ... [2020-09-25 07:56:43,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:56:43,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:56:43,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:43,705 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:56:43,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:43,982 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:56:43,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:43 WrapperNode [2020-09-25 07:56:43,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:43,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:56:43,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:56:43,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:56:43,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:43" (1/1) ... [2020-09-25 07:56:43,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:43" (1/1) ... [2020-09-25 07:56:44,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:43" (1/1) ... [2020-09-25 07:56:44,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:43" (1/1) ... [2020-09-25 07:56:44,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:43" (1/1) ... [2020-09-25 07:56:44,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:43" (1/1) ... [2020-09-25 07:56:44,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:43" (1/1) ... [2020-09-25 07:56:44,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:56:44,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:56:44,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:56:44,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:56:44,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:44,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:56:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:56:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:56:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:56:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:56:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:56:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:56:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:56:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:56:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:56:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:56:45,844 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:56:45,845 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:56:45,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:45 BoogieIcfgContainer [2020-09-25 07:56:45,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:56:45,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:56:45,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:56:45,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:56:45,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:56:43" (1/3) ... [2020-09-25 07:56:45,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:45, skipping insertion in model container [2020-09-25 07:56:45,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:43" (2/3) ... [2020-09-25 07:56:45,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:45, skipping insertion in model container [2020-09-25 07:56:45,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:45" (3/3) ... [2020-09-25 07:56:45,876 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-09-25 07:56:45,889 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:56:45,903 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:56:45,926 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:56:45,957 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:56:45,958 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:56:45,958 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:56:45,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:56:45,958 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:56:45,958 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:56:45,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:56:45,959 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:56:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:56:46,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 07:56:46,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:46,004 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] [2020-09-25 07:56:46,005 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:46,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:46,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1274135065, now seen corresponding path program 1 times [2020-09-25 07:56:46,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:46,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791069953] [2020-09-25 07:56:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:46,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:47,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:47,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 07:56:47,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:56:47,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1334 [2020-09-25 07:56:47,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:47,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 07:56:47,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:56:47,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:47,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:47,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:47,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:47,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:47,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:56:47,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:47,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:47,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:47,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:47,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:47,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:47,727 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 07:56:47,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791069953] [2020-09-25 07:56:47,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:47,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:56:47,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71060644] [2020-09-25 07:56:47,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:56:47,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:47,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:56:47,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:56:47,761 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:56:49,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:49,915 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 07:56:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:56:49,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-25 07:56:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:49,941 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 07:56:49,941 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 07:56:49,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:49,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 07:56:50,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 07:56:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 07:56:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 07:56:50,064 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 63 [2020-09-25 07:56:50,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:50,065 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 07:56:50,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:56:50,065 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 07:56:50,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 07:56:50,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:50,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:50,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:56:50,075 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:50,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:50,076 INFO L82 PathProgramCache]: Analyzing trace with hash 821407407, now seen corresponding path program 1 times [2020-09-25 07:56:50,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:50,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986160866] [2020-09-25 07:56:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:50,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:50,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:50,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:51,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:52,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:52,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:52,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:52,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:55,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:55,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 07:56:55,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:56:55,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 07:56:55,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:55,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:55,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:55,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 07:56:55,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:56:55,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:55,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:55,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:55,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:55,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:56:55,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:55,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:55,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:55,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:55,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:55,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:56:55,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:55,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 07:56:55,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:55,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:56:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:55,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986160866] [2020-09-25 07:56:55,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:55,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:55,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790446239] [2020-09-25 07:56:55,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:55,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:55,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:55,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:55,637 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-25 07:56:57,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:57,816 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-25 07:56:57,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:56:57,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-09-25 07:56:57,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:57,827 INFO L225 Difference]: With dead ends: 1330 [2020-09-25 07:56:57,827 INFO L226 Difference]: Without dead ends: 769 [2020-09-25 07:56:57,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:56:57,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-25 07:56:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-25 07:56:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-25 07:56:57,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-25 07:56:57,885 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 146 [2020-09-25 07:56:57,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:57,886 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-25 07:56:57,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:57,887 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-25 07:56:57,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 07:56:57,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:57,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:57,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:56:57,892 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:57,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:57,892 INFO L82 PathProgramCache]: Analyzing trace with hash -651267958, now seen corresponding path program 1 times [2020-09-25 07:56:57,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:57,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312908177] [2020-09-25 07:56:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:57,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:57,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:58,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:58,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:58,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:58,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:59,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:02,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:02,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 07:57:02,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:57:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 07:57:02,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:02,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:57:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:02,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:03,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:03,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:03,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:03,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:03,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:03,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:57:03,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:03,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:03,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:57:03,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:03,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:03,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:03,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:03,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:03,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 07:57:03,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:03,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:03,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:57:03,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:03,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312908177] [2020-09-25 07:57:03,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:03,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:03,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125736954] [2020-09-25 07:57:03,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:03,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:03,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:03,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:03,266 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 7 states. [2020-09-25 07:57:05,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:05,685 INFO L93 Difference]: Finished difference Result 1824 states and 2359 transitions. [2020-09-25 07:57:05,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:57:05,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-09-25 07:57:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:05,692 INFO L225 Difference]: With dead ends: 1824 [2020-09-25 07:57:05,692 INFO L226 Difference]: Without dead ends: 1108 [2020-09-25 07:57:05,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:57:05,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2020-09-25 07:57:05,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1046. [2020-09-25 07:57:05,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-09-25 07:57:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1252 transitions. [2020-09-25 07:57:05,742 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1252 transitions. Word has length 146 [2020-09-25 07:57:05,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:05,743 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1252 transitions. [2020-09-25 07:57:05,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:05,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1252 transitions. [2020-09-25 07:57:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 07:57:05,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:05,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:05,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:57:05,750 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:05,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:05,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1962223494, now seen corresponding path program 1 times [2020-09-25 07:57:05,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:05,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306109144] [2020-09-25 07:57:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:05,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:06,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:07,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:07,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:07,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:07,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:10,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:10,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 07:57:10,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:57:10,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 07:57:10,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:10,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:57:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 07:57:10,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:10,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:10,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:10,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:10,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:10,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:10,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:57:10,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:10,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:10,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:10,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:10,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:11,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:11,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:11,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:11,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 07:57:11,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:11,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:11,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:11,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:11,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:11,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306109144] [2020-09-25 07:57:11,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:11,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:57:11,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134249213] [2020-09-25 07:57:11,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:57:11,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:11,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:57:11,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:57:11,179 INFO L87 Difference]: Start difference. First operand 1046 states and 1252 transitions. Second operand 6 states. [2020-09-25 07:57:14,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:14,127 INFO L93 Difference]: Finished difference Result 2934 states and 3717 transitions. [2020-09-25 07:57:14,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:57:14,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2020-09-25 07:57:14,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:14,143 INFO L225 Difference]: With dead ends: 2934 [2020-09-25 07:57:14,143 INFO L226 Difference]: Without dead ends: 2053 [2020-09-25 07:57:14,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2020-09-25 07:57:14,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1692. [2020-09-25 07:57:14,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1692 states. [2020-09-25 07:57:14,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2150 transitions. [2020-09-25 07:57:14,224 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2150 transitions. Word has length 152 [2020-09-25 07:57:14,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:14,225 INFO L479 AbstractCegarLoop]: Abstraction has 1692 states and 2150 transitions. [2020-09-25 07:57:14,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:57:14,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2150 transitions. [2020-09-25 07:57:14,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 07:57:14,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:14,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:14,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:57:14,229 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:14,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:14,229 INFO L82 PathProgramCache]: Analyzing trace with hash 871237888, now seen corresponding path program 1 times [2020-09-25 07:57:14,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:14,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398029728] [2020-09-25 07:57:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:14,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:15,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:15,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 07:57:15,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:57:15,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1684 [2020-09-25 07:57:15,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:15,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:57:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:57:15,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:15,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:16,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:16,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:16,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:16,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:57:16,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:16,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:57:16,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:16,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:16,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:16,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:16,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 07:57:16,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:16,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 07:57:16,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:16,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:16,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 07:57:16,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:16,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398029728] [2020-09-25 07:57:16,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:16,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:16,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828314520] [2020-09-25 07:57:16,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:16,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:16,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:16,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:16,322 INFO L87 Difference]: Start difference. First operand 1692 states and 2150 transitions. Second operand 7 states. [2020-09-25 07:57:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:18,540 INFO L93 Difference]: Finished difference Result 4253 states and 5952 transitions. [2020-09-25 07:57:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:57:18,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 168 [2020-09-25 07:57:18,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:18,561 INFO L225 Difference]: With dead ends: 4253 [2020-09-25 07:57:18,561 INFO L226 Difference]: Without dead ends: 2726 [2020-09-25 07:57:18,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 07:57:18,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2020-09-25 07:57:18,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2646. [2020-09-25 07:57:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2646 states. [2020-09-25 07:57:18,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3502 transitions. [2020-09-25 07:57:18,666 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3502 transitions. Word has length 168 [2020-09-25 07:57:18,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:18,667 INFO L479 AbstractCegarLoop]: Abstraction has 2646 states and 3502 transitions. [2020-09-25 07:57:18,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:18,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3502 transitions. [2020-09-25 07:57:18,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 07:57:18,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:18,672 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:57:18,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:57:18,673 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:18,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:18,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1994523964, now seen corresponding path program 1 times [2020-09-25 07:57:18,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:18,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876712553] [2020-09-25 07:57:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:18,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:20,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:20,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:20,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:20,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:23,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:23,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 07:57:23,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 07:57:23,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:57:23,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:23,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:23,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:57:23,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:57:23,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 07:57:23,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:23,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:23,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:23,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:23,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:23,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:57:23,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:23,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:23,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:23,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:23,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:23,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:23,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 07:57:23,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:23,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:23,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:23,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:23,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:57:23,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:23,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:57:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:23,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:24,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:24,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:24,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:24,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:24,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 07:57:24,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:24,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:24,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 102 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 07:57:24,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876712553] [2020-09-25 07:57:24,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:24,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:57:24,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307035680] [2020-09-25 07:57:24,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:57:24,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:24,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:57:24,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:57:24,391 INFO L87 Difference]: Start difference. First operand 2646 states and 3502 transitions. Second operand 9 states. [2020-09-25 07:57:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:29,038 INFO L93 Difference]: Finished difference Result 6253 states and 8561 transitions. [2020-09-25 07:57:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:57:29,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 235 [2020-09-25 07:57:29,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:29,061 INFO L225 Difference]: With dead ends: 6253 [2020-09-25 07:57:29,061 INFO L226 Difference]: Without dead ends: 3753 [2020-09-25 07:57:29,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:57:29,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2020-09-25 07:57:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 3554. [2020-09-25 07:57:29,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3554 states. [2020-09-25 07:57:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 4609 transitions. [2020-09-25 07:57:29,163 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 4609 transitions. Word has length 235 [2020-09-25 07:57:29,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:29,164 INFO L479 AbstractCegarLoop]: Abstraction has 3554 states and 4609 transitions. [2020-09-25 07:57:29,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:57:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 4609 transitions. [2020-09-25 07:57:29,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 07:57:29,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:29,171 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:57:29,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:57:29,171 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:29,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:29,172 INFO L82 PathProgramCache]: Analyzing trace with hash -385132829, now seen corresponding path program 1 times [2020-09-25 07:57:29,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:29,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618212766] [2020-09-25 07:57:29,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:29,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:31,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking...