/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/Problem14_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:30:25,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:30:25,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:30:25,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:30:25,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:30:25,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:30:25,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:30:25,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:30:25,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:30:25,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:30:25,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:30:25,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:30:25,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:30:25,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:30:25,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:30:25,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:30:25,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:30:25,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:30:25,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:30:25,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:30:25,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:30:25,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:30:25,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:30:25,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:30:25,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:30:25,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:30:25,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:30:25,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:30:25,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:30:25,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:30:25,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:30:25,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:30:25,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:30:25,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:30:25,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:30:25,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:30:25,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:30:25,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:30:25,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:30:25,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:30:25,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:30:25,520 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 [2020-09-24 19:30:25,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:30:25,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:30:25,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:30:25,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:30:25,567 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:30:25,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:30:25,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:30:25,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:30:25,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:30:25,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:30:25,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:30:25,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:30:25,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:30:25,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:30:25,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:30:25,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:30:25,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:30:25,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:30:25,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:30:25,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:30:25,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:30:25,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:25,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:30:25,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:30:25,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:30:25,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:30:25,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:30:25,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:30:25,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:30:25,573 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:30:26,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:30:26,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:30:26,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:30:26,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:30:26,036 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:30:26,037 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-24 19:30:26,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57729e087/6c572176c80b41978a0d812808a7cf8d/FLAG27f4fff29 [2020-09-24 19:30:26,790 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:30:26,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-24 19:30:26,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57729e087/6c572176c80b41978a0d812808a7cf8d/FLAG27f4fff29 [2020-09-24 19:30:27,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57729e087/6c572176c80b41978a0d812808a7cf8d [2020-09-24 19:30:27,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:30:27,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:30:27,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:27,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:30:27,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:30:27,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:27" (1/1) ... [2020-09-24 19:30:27,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:27, skipping insertion in model container [2020-09-24 19:30:27,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:27" (1/1) ... [2020-09-24 19:30:27,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:30:27,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:30:27,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:27,656 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:30:27,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:28,008 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:30:28,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:28 WrapperNode [2020-09-24 19:30:28,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:28,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:30:28,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:30:28,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:30:28,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:28" (1/1) ... [2020-09-24 19:30:28,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:28" (1/1) ... [2020-09-24 19:30:28,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:28" (1/1) ... [2020-09-24 19:30:28,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:28" (1/1) ... [2020-09-24 19:30:28,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:28" (1/1) ... [2020-09-24 19:30:28,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:28" (1/1) ... [2020-09-24 19:30:28,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:28" (1/1) ... [2020-09-24 19:30:28,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:30:28,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:30:28,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:30:28,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:30:28,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:28" (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 [2020-09-24 19:30:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:30:28,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:30:28,278 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:30:28,278 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:30:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:30:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:30:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:30:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:30:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:30:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:30:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:30:29,875 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:30:29,875 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:30:29,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:29 BoogieIcfgContainer [2020-09-24 19:30:29,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:30:29,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:30:29,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:30:29,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:30:29,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:30:27" (1/3) ... [2020-09-24 19:30:29,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c607ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:29, skipping insertion in model container [2020-09-24 19:30:29,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:28" (2/3) ... [2020-09-24 19:30:29,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c607ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:29, skipping insertion in model container [2020-09-24 19:30:29,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:29" (3/3) ... [2020-09-24 19:30:29,895 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label01.c [2020-09-24 19:30:29,907 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:30:29,918 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:30:29,940 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:30:29,972 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:30:29,972 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:30:29,972 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:30:29,973 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:30:29,973 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:30:29,973 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:30:29,973 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:30:29,973 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:30:30,008 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-24 19:30:30,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 19:30:30,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:30,020 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] [2020-09-24 19:30:30,021 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:30,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:30,029 INFO L82 PathProgramCache]: Analyzing trace with hash -899775614, now seen corresponding path program 1 times [2020-09-24 19:30:30,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:30,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481277539] [2020-09-24 19:30:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:30,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:30,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:30,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:30,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:30:30,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:30:30,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-09-24 19:30:30,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:30,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:30,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:30:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:30:30,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:30:30,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:31,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:31,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:31,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:31,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:31,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:30:31,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:31,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:31,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:31,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:30:31,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:31,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481277539] [2020-09-24 19:30:31,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:31,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:30:31,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124489774] [2020-09-24 19:30:31,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:31,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:31,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:31,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:31,104 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-24 19:30:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:35,130 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-24 19:30:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:30:35,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-09-24 19:30:35,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:35,162 INFO L225 Difference]: With dead ends: 1991 [2020-09-24 19:30:35,163 INFO L226 Difference]: Without dead ends: 1250 [2020-09-24 19:30:35,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:35,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-24 19:30:35,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-24 19:30:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-24 19:30:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-24 19:30:35,301 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 73 [2020-09-24 19:30:35,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:35,302 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-24 19:30:35,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:35,302 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-24 19:30:35,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 19:30:35,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:35,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:35,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:30:35,313 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:35,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:35,314 INFO L82 PathProgramCache]: Analyzing trace with hash -893839862, now seen corresponding path program 1 times [2020-09-24 19:30:35,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:35,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93830844] [2020-09-24 19:30:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:35,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:35,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:35,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:36,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-24 19:30:36,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:30:36,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:30:36,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:36,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:36,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-09-24 19:30:36,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 19:30:36,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:36,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:36,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:36,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:36,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:36,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:30:36,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:36,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:36,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:36,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:36,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:30:36,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:36,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 19:30:36,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:30:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:36,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93830844] [2020-09-24 19:30:36,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:36,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:36,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889060053] [2020-09-24 19:30:36,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:36,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:36,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:36,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:36,725 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 5 states. [2020-09-24 19:30:39,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:39,317 INFO L93 Difference]: Finished difference Result 2254 states and 2861 transitions. [2020-09-24 19:30:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:39,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-24 19:30:39,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:39,333 INFO L225 Difference]: With dead ends: 2254 [2020-09-24 19:30:39,333 INFO L226 Difference]: Without dead ends: 1272 [2020-09-24 19:30:39,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2020-09-24 19:30:39,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1188. [2020-09-24 19:30:39,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2020-09-24 19:30:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1482 transitions. [2020-09-24 19:30:39,400 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1482 transitions. Word has length 160 [2020-09-24 19:30:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:39,401 INFO L479 AbstractCegarLoop]: Abstraction has 1188 states and 1482 transitions. [2020-09-24 19:30:39,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1482 transitions. [2020-09-24 19:30:39,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 19:30:39,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:39,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:39,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:30:39,407 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:39,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:39,408 INFO L82 PathProgramCache]: Analyzing trace with hash -829752670, now seen corresponding path program 1 times [2020-09-24 19:30:39,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:39,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041314568] [2020-09-24 19:30:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:39,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:39,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:39,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:40,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:40,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-24 19:30:40,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:40,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-09-24 19:30:40,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:30:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 19:30:40,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:40,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:40,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:40,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:40,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:40,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:40,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:30:40,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:30:40,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:40,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:40,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:40,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:40,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:30:40,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:40,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-24 19:30:40,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:40,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:40,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:40,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 19:30:40,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:40,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041314568] [2020-09-24 19:30:40,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:40,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:30:40,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77413085] [2020-09-24 19:30:40,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:40,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:40,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:40,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:40,931 INFO L87 Difference]: Start difference. First operand 1188 states and 1482 transitions. Second operand 7 states. [2020-09-24 19:30:44,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:44,226 INFO L93 Difference]: Finished difference Result 3343 states and 4462 transitions. [2020-09-24 19:30:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:30:44,226 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-09-24 19:30:44,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:44,243 INFO L225 Difference]: With dead ends: 3343 [2020-09-24 19:30:44,243 INFO L226 Difference]: Without dead ends: 2170 [2020-09-24 19:30:44,251 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 [2020-09-24 19:30:44,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2170 states. [2020-09-24 19:30:44,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2170 to 1990. [2020-09-24 19:30:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2020-09-24 19:30:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2463 transitions. [2020-09-24 19:30:44,342 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2463 transitions. Word has length 169 [2020-09-24 19:30:44,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:44,343 INFO L479 AbstractCegarLoop]: Abstraction has 1990 states and 2463 transitions. [2020-09-24 19:30:44,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:44,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2463 transitions. [2020-09-24 19:30:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-24 19:30:44,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:44,350 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:44,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:30:44,351 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:44,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:44,351 INFO L82 PathProgramCache]: Analyzing trace with hash -303069568, now seen corresponding path program 1 times [2020-09-24 19:30:44,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:44,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649758194] [2020-09-24 19:30:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:44,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:44,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:44,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:45,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:45,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:45,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:45,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-24 19:30:45,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:30:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-24 19:30:45,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:30:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:30:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:30:45,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 19:30:45,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:45,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:45,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:45,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:45,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:45,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:30:45,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:45,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:45,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:45,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:45,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:45,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:45,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 19:30:45,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:45,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-24 19:30:45,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:45,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:30:45,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:45,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:30:45,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:45,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-24 19:30:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:45,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:45,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:45,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 19:30:45,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:45,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-24 19:30:45,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 19:30:45,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:46,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649758194] [2020-09-24 19:30:46,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:46,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:30:46,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227466550] [2020-09-24 19:30:46,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:30:46,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:46,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:30:46,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:30:46,306 INFO L87 Difference]: Start difference. First operand 1990 states and 2463 transitions. Second operand 8 states. [2020-09-24 19:30:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:50,510 INFO L93 Difference]: Finished difference Result 5006 states and 6437 transitions. [2020-09-24 19:30:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 19:30:50,510 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 249 [2020-09-24 19:30:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:50,521 INFO L225 Difference]: With dead ends: 5006 [2020-09-24 19:30:50,521 INFO L226 Difference]: Without dead ends: 2163 [2020-09-24 19:30:50,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:30:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2020-09-24 19:30:50,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 1908. [2020-09-24 19:30:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1908 states. [2020-09-24 19:30:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2099 transitions. [2020-09-24 19:30:50,579 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2099 transitions. Word has length 249 [2020-09-24 19:30:50,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:50,579 INFO L479 AbstractCegarLoop]: Abstraction has 1908 states and 2099 transitions. [2020-09-24 19:30:50,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:30:50,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2099 transitions. [2020-09-24 19:30:50,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-24 19:30:50,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:50,586 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:50,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:30:50,586 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:50,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:50,587 INFO L82 PathProgramCache]: Analyzing trace with hash -505865555, now seen corresponding path program 1 times [2020-09-24 19:30:50,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:50,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368259995] [2020-09-24 19:30:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:51,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:51,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:51,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:51,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-09-24 19:30:51,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:51,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-09-24 19:30:51,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:51,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:51,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-24 19:30:51,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-24 19:30:51,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:51,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:51,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:51,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:51,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:51,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:30:51,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:51,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:51,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:51,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:52,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:52,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:30:52,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:52,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 19:30:52,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:30:52,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:52,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:30:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:52,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:52,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:30:52,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:52,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-24 19:30:52,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 19:30:52,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:53,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368259995] [2020-09-24 19:30:53,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:53,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:53,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165006379] [2020-09-24 19:30:53,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:53,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:53,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:53,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:53,049 INFO L87 Difference]: Start difference. First operand 1908 states and 2099 transitions. Second operand 7 states. [2020-09-24 19:30:55,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:55,013 INFO L93 Difference]: Finished difference Result 4790 states and 5384 transitions. [2020-09-24 19:30:55,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:30:55,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-09-24 19:30:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:55,028 INFO L225 Difference]: With dead ends: 4790 [2020-09-24 19:30:55,029 INFO L226 Difference]: Without dead ends: 2897 [2020-09-24 19:30:55,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:30:55,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-09-24 19:30:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2877. [2020-09-24 19:30:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2877 states. [2020-09-24 19:30:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 3145 transitions. [2020-09-24 19:30:55,094 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 3145 transitions. Word has length 380 [2020-09-24 19:30:55,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:55,094 INFO L479 AbstractCegarLoop]: Abstraction has 2877 states and 3145 transitions. [2020-09-24 19:30:55,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:55,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 3145 transitions. [2020-09-24 19:30:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-09-24 19:30:55,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:55,106 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:55,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:30:55,106 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:55,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:55,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1540699335, now seen corresponding path program 1 times [2020-09-24 19:30:55,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:55,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718427223] [2020-09-24 19:30:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:55,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:55,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:56,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 538 [2020-09-24 19:30:56,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:30:56,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 280 [2020-09-24 19:30:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-09-24 19:30:56,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:56,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:56,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:56,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:56,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:56,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:30:56,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:56,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:56,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:56,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:56,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:30:56,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:56,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:30:56,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:56,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:30:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:56,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:56,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 19:30:56,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:56,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 19:30:56,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:30:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:56,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-24 19:30:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:57,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:57,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:30:57,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:57,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-09-24 19:30:57,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 19:30:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 427 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-09-24 19:30:57,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718427223] [2020-09-24 19:30:57,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:57,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:57,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909341492] [2020-09-24 19:30:57,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:57,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:57,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:57,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:57,374 INFO L87 Difference]: Start difference. First operand 2877 states and 3145 transitions. Second operand 7 states. [2020-09-24 19:30:59,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:59,730 INFO L93 Difference]: Finished difference Result 6190 states and 6829 transitions. [2020-09-24 19:30:59,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:30:59,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 523 [2020-09-24 19:30:59,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:59,751 INFO L225 Difference]: With dead ends: 6190 [2020-09-24 19:30:59,752 INFO L226 Difference]: Without dead ends: 3310 [2020-09-24 19:30:59,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:30:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2020-09-24 19:30:59,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 3248. [2020-09-24 19:30:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3248 states. [2020-09-24 19:30:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3248 states to 3248 states and 3537 transitions. [2020-09-24 19:30:59,834 INFO L78 Accepts]: Start accepts. Automaton has 3248 states and 3537 transitions. Word has length 523 [2020-09-24 19:30:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:59,835 INFO L479 AbstractCegarLoop]: Abstraction has 3248 states and 3537 transitions. [2020-09-24 19:30:59,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:59,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3248 states and 3537 transitions. [2020-09-24 19:30:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2020-09-24 19:30:59,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:59,850 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-09-24 19:30:59,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:30:59,850 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:59,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:59,851 INFO L82 PathProgramCache]: Analyzing trace with hash 703629733, now seen corresponding path program 1 times [2020-09-24 19:30:59,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:59,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424831222] [2020-09-24 19:30:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:00,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:01,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:01,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 640 [2020-09-24 19:31:01,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:31:01,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-24 19:31:01,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:01,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:01,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 381 [2020-09-24 19:31:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-24 19:31:01,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:01,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:01,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:01,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:01,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:01,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:01,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:31:01,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:01,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:01,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:01,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:01,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:01,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:01,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:01,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:01,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:01,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:01,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:31:01,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:01,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:01,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:01,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:01,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:01,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:01,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:01,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:01,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:31:01,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:01,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:01,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:01,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:01,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:01,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-24 19:31:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:01,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:01,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:01,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 19:31:01,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 19:31:01,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 19:31:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:01,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-24 19:31:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:01,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:01,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:01,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:01,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:01,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-09-24 19:31:01,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 19:31:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 587 proven. 2 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2020-09-24 19:31:02,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424831222] [2020-09-24 19:31:02,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:02,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:02,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040113339] [2020-09-24 19:31:02,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:02,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:02,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:02,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:02,297 INFO L87 Difference]: Start difference. First operand 3248 states and 3537 transitions. Second operand 7 states. [2020-09-24 19:31:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:04,228 INFO L93 Difference]: Finished difference Result 7448 states and 8254 transitions. [2020-09-24 19:31:04,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:31:04,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 623 [2020-09-24 19:31:04,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:04,244 INFO L225 Difference]: With dead ends: 7448 [2020-09-24 19:31:04,245 INFO L226 Difference]: Without dead ends: 4404 [2020-09-24 19:31:04,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4404 states. [2020-09-24 19:31:04,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4404 to 4384. [2020-09-24 19:31:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4384 states. [2020-09-24 19:31:04,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 4786 transitions. [2020-09-24 19:31:04,344 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 4786 transitions. Word has length 623 [2020-09-24 19:31:04,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:04,345 INFO L479 AbstractCegarLoop]: Abstraction has 4384 states and 4786 transitions. [2020-09-24 19:31:04,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:04,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 4786 transitions. [2020-09-24 19:31:04,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2020-09-24 19:31:04,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:04,354 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-24 19:31:04,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:31:04,355 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:04,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:04,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1937036809, now seen corresponding path program 1 times [2020-09-24 19:31:04,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:04,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816065103] [2020-09-24 19:31:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:04,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:05,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:05,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:05,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 726 [2020-09-24 19:31:05,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:05,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:31:05,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:05,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:05,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-24 19:31:05,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-24 19:31:05,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:05,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:05,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:05,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:05,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:05,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:05,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:31:05,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:05,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:05,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:05,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:05,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:05,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:05,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:05,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:05,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:05,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 19:31:05,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:31:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:05,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:05,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:06,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:06,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 19:31:06,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:06,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-24 19:31:06,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 19:31:06,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:06,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-24 19:31:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:06,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:06,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:06,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 19:31:06,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:06,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 19:31:06,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:06,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:06,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-09-24 19:31:06,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:06,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:06,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-09-24 19:31:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:06,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:06,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:06,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:06,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:06,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 19:31:06,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:06,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:06,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-09-24 19:31:06,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:06,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:07,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 361 proven. 262 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2020-09-24 19:31:07,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816065103] [2020-09-24 19:31:07,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:07,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:07,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703898226] [2020-09-24 19:31:07,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:07,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:07,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:07,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:07,175 INFO L87 Difference]: Start difference. First operand 4384 states and 4786 transitions. Second operand 7 states. [2020-09-24 19:31:09,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:09,309 INFO L93 Difference]: Finished difference Result 8580 states and 9390 transitions. [2020-09-24 19:31:09,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:31:09,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 709 [2020-09-24 19:31:09,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:09,325 INFO L225 Difference]: With dead ends: 8580 [2020-09-24 19:31:09,325 INFO L226 Difference]: Without dead ends: 4400 [2020-09-24 19:31:09,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:31:09,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2020-09-24 19:31:09,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 4384. [2020-09-24 19:31:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4384 states. [2020-09-24 19:31:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 4784 transitions. [2020-09-24 19:31:09,418 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 4784 transitions. Word has length 709 [2020-09-24 19:31:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:09,418 INFO L479 AbstractCegarLoop]: Abstraction has 4384 states and 4784 transitions. [2020-09-24 19:31:09,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 4784 transitions. [2020-09-24 19:31:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2020-09-24 19:31:09,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:09,430 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:09,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:31:09,431 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:09,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:09,432 INFO L82 PathProgramCache]: Analyzing trace with hash 7997788, now seen corresponding path program 1 times [2020-09-24 19:31:09,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:09,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677261008] [2020-09-24 19:31:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:09,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:10,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:10,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 810 [2020-09-24 19:31:10,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:31:10,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1275 [2020-09-24 19:31:10,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 742 [2020-09-24 19:31:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:31:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:11,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:11,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:11,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:11,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:11,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:11,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:31:11,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:11,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:11,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:11,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:11,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:11,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:11,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:11,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:11,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:11,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:11,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 19:31:11,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:11,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:11,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:11,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:11,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:11,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:11,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:11,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:11,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 19:31:11,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:11,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:11,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:11,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:11,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:11,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-24 19:31:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:11,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:11,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:11,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 19:31:11,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:11,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 19:31:11,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:11,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:11,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-24 19:31:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:11,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:11,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:11,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 19:31:11,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 19:31:11,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:11,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-09-24 19:31:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:11,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:11,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:11,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:11,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-24 19:31:11,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-09-24 19:31:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:11,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 300 proven. 5 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2020-09-24 19:31:11,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677261008] [2020-09-24 19:31:11,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:11,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:31:11,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700429452] [2020-09-24 19:31:11,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:31:11,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:11,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:31:11,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:31:11,969 INFO L87 Difference]: Start difference. First operand 4384 states and 4784 transitions. Second operand 5 states. [2020-09-24 19:31:13,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:13,584 INFO L93 Difference]: Finished difference Result 9727 states and 10803 transitions. [2020-09-24 19:31:13,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:31:13,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 791 [2020-09-24 19:31:13,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:13,603 INFO L225 Difference]: With dead ends: 9727 [2020-09-24 19:31:13,604 INFO L226 Difference]: Without dead ends: 5547 [2020-09-24 19:31:13,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:31:13,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2020-09-24 19:31:13,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 5530. [2020-09-24 19:31:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5530 states. [2020-09-24 19:31:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 6136 transitions. [2020-09-24 19:31:13,708 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 6136 transitions. Word has length 791 [2020-09-24 19:31:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:13,709 INFO L479 AbstractCegarLoop]: Abstraction has 5530 states and 6136 transitions. [2020-09-24 19:31:13,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:31:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 6136 transitions. [2020-09-24 19:31:13,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2020-09-24 19:31:13,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:13,722 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:13,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:31:13,722 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:13,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:13,723 INFO L82 PathProgramCache]: Analyzing trace with hash 195366104, now seen corresponding path program 1 times [2020-09-24 19:31:13,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:13,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902740617] [2020-09-24 19:31:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:14,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:15,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:15,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 915 [2020-09-24 19:31:15,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:15,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1297 [2020-09-24 19:31:15,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:15,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:15,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 846 [2020-09-24 19:31:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 19:31:15,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:15,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:15,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:15,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:15,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:15,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:31:15,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:15,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:15,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:15,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:15,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:15,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:15,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:31:15,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:15,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:15,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:15,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:15,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:15,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:15,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:15,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 19:31:15,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:15,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:15,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:15,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:15,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:15,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-24 19:31:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:15,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:15,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 19:31:15,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:15,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:31:15,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:15,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:15,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-24 19:31:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:15,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:15,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:15,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 19:31:15,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:15,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:31:15,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:15,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:15,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-09-24 19:31:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:15,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:15,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:15,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:15,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:15,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 19:31:15,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:15,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:15,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:15,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:15,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:15,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2020-09-24 19:31:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:15,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:15,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-24 19:31:15,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:15,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 19:31:15,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:15,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:15,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:15,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 19:31:15,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2061 backedges. 361 proven. 6 refuted. 0 times theorem prover too weak. 1694 trivial. 0 not checked. [2020-09-24 19:31:16,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902740617] [2020-09-24 19:31:16,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:16,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:31:16,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705388318] [2020-09-24 19:31:16,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:31:16,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:16,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:31:16,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:31:16,186 INFO L87 Difference]: Start difference. First operand 5530 states and 6136 transitions. Second operand 5 states.