/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:04:32,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:04:32,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:04:32,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:04:32,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:04:32,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:04:32,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:04:32,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:04:32,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:04:32,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:04:32,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:04:32,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:04:32,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:04:32,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:04:32,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:04:32,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:04:32,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:04:32,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:04:32,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:04:32,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:04:32,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:04:32,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:04:32,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:04:32,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:04:32,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:04:32,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:04:32,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:04:32,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:04:32,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:04:32,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:04:32,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:04:32,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:04:32,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:04:32,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:04:32,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:04:32,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:04:32,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:04:32,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:04:32,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:04:32,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:04:32,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:04:32,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:04:32,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:04:32,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:04:32,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:04:32,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:04:32,168 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:04:32,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:04:32,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:04:32,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:04:32,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:04:32,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:04:32,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:04:32,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:04:32,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:04:32,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:04:32,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:04:32,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:04:32,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:04:32,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:04:32,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:04:32,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:04:32,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:04:32,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:04:32,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:04:32,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:04:32,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:04:32,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:04:32,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:04:32,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:04:32,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:04:32,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:04:32,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:04:32,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:04:32,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:04:32,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:04:32,696 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:04:32,697 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 09:04:32,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9eb2f158/5d4e9aa0241a4ebfb63afb1c31324cd3/FLAG815fba9e2 [2020-09-25 09:04:33,456 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:04:33,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 09:04:33,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9eb2f158/5d4e9aa0241a4ebfb63afb1c31324cd3/FLAG815fba9e2 [2020-09-25 09:04:33,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9eb2f158/5d4e9aa0241a4ebfb63afb1c31324cd3 [2020-09-25 09:04:33,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:04:33,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:04:33,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:33,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:04:33,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:04:33,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:33" (1/1) ... [2020-09-25 09:04:33,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f6647d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:33, skipping insertion in model container [2020-09-25 09:04:33,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:33" (1/1) ... [2020-09-25 09:04:33,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:04:33,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:04:34,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:34,352 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:04:34,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:34,519 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:04:34,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:34 WrapperNode [2020-09-25 09:04:34,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:34,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:04:34,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:04:34,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:04:34,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:34" (1/1) ... [2020-09-25 09:04:34,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:34" (1/1) ... [2020-09-25 09:04:34,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:34" (1/1) ... [2020-09-25 09:04:34,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:34" (1/1) ... [2020-09-25 09:04:34,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:34" (1/1) ... [2020-09-25 09:04:34,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:34" (1/1) ... [2020-09-25 09:04:34,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:34" (1/1) ... [2020-09-25 09:04:34,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:04:34,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:04:34,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:04:34,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:04:34,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:04:34,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:04:34,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:04:34,761 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:04:34,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:04:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:04:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:04:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:04:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:04:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:04:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:04:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:04:36,293 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:04:36,293 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:04:36,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:36 BoogieIcfgContainer [2020-09-25 09:04:36,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:04:36,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:04:36,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:04:36,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:04:36,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:04:33" (1/3) ... [2020-09-25 09:04:36,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:36, skipping insertion in model container [2020-09-25 09:04:36,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:34" (2/3) ... [2020-09-25 09:04:36,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:36, skipping insertion in model container [2020-09-25 09:04:36,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:36" (3/3) ... [2020-09-25 09:04:36,312 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label04.c [2020-09-25 09:04:36,324 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:04:36,336 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:04:36,359 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:04:36,393 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:04:36,394 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:04:36,394 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:04:36,394 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:04:36,394 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:04:36,394 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:04:36,395 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:04:36,395 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:04:36,426 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:04:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 09:04:36,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:36,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:36,442 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:36,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:36,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1435975873, now seen corresponding path program 1 times [2020-09-25 09:04:36,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:36,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139021569] [2020-09-25 09:04:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:36,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:37,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 09:04:37,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:37,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-09-25 09:04:37,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:37,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:04:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 09:04:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:04:37,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:37,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:37,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:37,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:37,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 09:04:37,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:37,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:04:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:37,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139021569] [2020-09-25 09:04:37,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:37,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:04:37,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903597838] [2020-09-25 09:04:37,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:04:37,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:37,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:04:37,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:04:37,786 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:04:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:39,785 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 09:04:39,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:04:39,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-25 09:04:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:39,826 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 09:04:39,827 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 09:04:39,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:39,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 09:04:39,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 09:04:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 09:04:39,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 09:04:39,992 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 85 [2020-09-25 09:04:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:39,993 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 09:04:39,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:04:39,993 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 09:04:40,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 09:04:40,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:40,004 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:40,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:04:40,005 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:40,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:40,005 INFO L82 PathProgramCache]: Analyzing trace with hash -2117933451, now seen corresponding path program 1 times [2020-09-25 09:04:40,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:40,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901200310] [2020-09-25 09:04:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:40,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:40,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:40,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:40,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:42,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:42,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:42,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 09:04:42,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:04:42,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2617 [2020-09-25 09:04:42,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:42,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:04:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 09:04:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:42,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:42,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:42,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:42,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 09:04:42,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:42,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:42,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:42,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:04:42,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:04:42,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:04:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:42,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:43,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:43,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:43,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 09:04:43,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:43,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 09:04:43,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:43,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:43,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:04:43,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:04:43,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901200310] [2020-09-25 09:04:43,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:43,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:04:43,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618074244] [2020-09-25 09:04:43,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:04:43,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:43,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:04:43,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:43,331 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 8 states. [2020-09-25 09:04:46,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:46,327 INFO L93 Difference]: Finished difference Result 1743 states and 2321 transitions. [2020-09-25 09:04:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:04:46,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 09:04:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:46,367 INFO L225 Difference]: With dead ends: 1743 [2020-09-25 09:04:46,368 INFO L226 Difference]: Without dead ends: 1215 [2020-09-25 09:04:46,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:04:46,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2020-09-25 09:04:46,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1171. [2020-09-25 09:04:46,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-09-25 09:04:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1461 transitions. [2020-09-25 09:04:46,436 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1461 transitions. Word has length 165 [2020-09-25 09:04:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:46,436 INFO L479 AbstractCegarLoop]: Abstraction has 1171 states and 1461 transitions. [2020-09-25 09:04:46,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:04:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1461 transitions. [2020-09-25 09:04:46,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 09:04:46,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:46,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:46,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:46,443 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:46,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:46,443 INFO L82 PathProgramCache]: Analyzing trace with hash 185368306, now seen corresponding path program 1 times [2020-09-25 09:04:46,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:46,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757230594] [2020-09-25 09:04:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:46,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:46,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:46,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:46,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:48,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:48,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:48,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:51,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:51,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 09:04:51,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:04:51,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 09:04:51,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:51,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:51,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:04:51,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:04:51,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 09:04:51,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:51,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:51,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:51,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:51,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:51,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:04:51,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:51,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:51,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:04:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:51,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:51,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:51,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:04:51,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:51,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 09:04:51,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:51,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:04:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:51,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:04:51,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:51,901 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:51,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757230594] [2020-09-25 09:04:51,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:51,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:51,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180881795] [2020-09-25 09:04:51,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:51,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:51,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:51,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:51,934 INFO L87 Difference]: Start difference. First operand 1171 states and 1461 transitions. Second operand 6 states. [2020-09-25 09:04:54,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:54,798 INFO L93 Difference]: Finished difference Result 4097 states and 5405 transitions. [2020-09-25 09:04:54,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:04:54,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2020-09-25 09:04:54,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:54,827 INFO L225 Difference]: With dead ends: 4097 [2020-09-25 09:04:54,828 INFO L226 Difference]: Without dead ends: 2941 [2020-09-25 09:04:54,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:54,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-09-25 09:04:54,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 2571. [2020-09-25 09:04:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2571 states. [2020-09-25 09:04:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 3358 transitions. [2020-09-25 09:04:54,970 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 3358 transitions. Word has length 174 [2020-09-25 09:04:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:54,971 INFO L479 AbstractCegarLoop]: Abstraction has 2571 states and 3358 transitions. [2020-09-25 09:04:54,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 3358 transitions. [2020-09-25 09:04:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-25 09:04:54,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:54,982 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:04:54,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:04:54,982 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:54,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:54,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1488860707, now seen corresponding path program 1 times [2020-09-25 09:04:54,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:54,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125130579] [2020-09-25 09:04:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:55,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:55,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:55,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:55,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:58,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:00,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-09-25 09:05:00,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 09:05:00,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:00,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-09-25 09:05:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:00,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:00,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:00,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:00,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:05:00,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:00,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:00,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:00,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:00,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:00,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:05:00,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 09:05:00,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:00,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 09:05:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:00,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:05:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:00,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:00,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 09:05:00,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:00,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-25 09:05:00,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:00,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:00,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 09:05:00,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 09:05:00,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125130579] [2020-09-25 09:05:00,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:00,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:00,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086739088] [2020-09-25 09:05:00,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:00,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:00,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:00,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:00,865 INFO L87 Difference]: Start difference. First operand 2571 states and 3358 transitions. Second operand 10 states. [2020-09-25 09:05:04,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:04,553 INFO L93 Difference]: Finished difference Result 6104 states and 8185 transitions. [2020-09-25 09:05:04,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:05:04,554 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 256 [2020-09-25 09:05:04,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:04,586 INFO L225 Difference]: With dead ends: 6104 [2020-09-25 09:05:04,586 INFO L226 Difference]: Without dead ends: 3522 [2020-09-25 09:05:04,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:05:04,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3522 states. [2020-09-25 09:05:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3522 to 3485. [2020-09-25 09:05:04,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3485 states. [2020-09-25 09:05:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 4482 transitions. [2020-09-25 09:05:04,725 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 4482 transitions. Word has length 256 [2020-09-25 09:05:04,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:04,727 INFO L479 AbstractCegarLoop]: Abstraction has 3485 states and 4482 transitions. [2020-09-25 09:05:04,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:05:04,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 4482 transitions. [2020-09-25 09:05:04,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 09:05:04,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:04,736 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:04,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:04,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:04,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:04,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1537763131, now seen corresponding path program 1 times [2020-09-25 09:05:04,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:04,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094722402] [2020-09-25 09:05:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:04,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:05,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:05,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:09,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-25 09:05:09,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:09,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 09:05:09,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:09,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:09,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 09:05:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 09:05:09,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:09,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:09,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:09,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:09,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:09,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:05:09,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:09,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:09,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:09,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:09,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:10,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:10,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 09:05:10,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:10,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:05:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:10,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:05:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:10,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:10,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 09:05:10,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:10,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 09:05:10,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:10,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 09:05:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 220 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:05:10,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094722402] [2020-09-25 09:05:10,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:10,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:05:10,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613036246] [2020-09-25 09:05:10,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:05:10,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:10,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:05:10,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:10,482 INFO L87 Difference]: Start difference. First operand 3485 states and 4482 transitions. Second operand 7 states. [2020-09-25 09:05:13,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:13,461 INFO L93 Difference]: Finished difference Result 8623 states and 11217 transitions. [2020-09-25 09:05:13,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:05:13,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-09-25 09:05:13,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:13,485 INFO L225 Difference]: With dead ends: 8623 [2020-09-25 09:05:13,485 INFO L226 Difference]: Without dead ends: 4325 [2020-09-25 09:05:13,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:05:13,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2020-09-25 09:05:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 4323. [2020-09-25 09:05:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4323 states. [2020-09-25 09:05:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 5262 transitions. [2020-09-25 09:05:13,628 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 5262 transitions. Word has length 268 [2020-09-25 09:05:13,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:13,629 INFO L479 AbstractCegarLoop]: Abstraction has 4323 states and 5262 transitions. [2020-09-25 09:05:13,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:05:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 5262 transitions. [2020-09-25 09:05:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-25 09:05:13,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:13,638 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:13,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:13,639 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:13,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:13,639 INFO L82 PathProgramCache]: Analyzing trace with hash -954800374, now seen corresponding path program 1 times [2020-09-25 09:05:13,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:13,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110721908] [2020-09-25 09:05:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:13,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:14,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-09-25 09:05:14,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:14,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-09-25 09:05:14,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:14,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 236 [2020-09-25 09:05:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 09:05:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:14,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:14,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:14,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:14,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:14,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:05:14,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:14,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:14,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:14,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:14,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:14,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:14,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:14,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:14,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 09:05:14,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:14,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 09:05:14,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:14,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:14,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:14,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 09:05:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:14,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:14,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 09:05:14,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:14,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 09:05:14,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:14,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:14,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:14,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:14,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 09:05:14,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-09-25 09:05:15,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110721908] [2020-09-25 09:05:15,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:15,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:05:15,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346167823] [2020-09-25 09:05:15,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:05:15,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:15,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:05:15,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:05:15,084 INFO L87 Difference]: Start difference. First operand 4323 states and 5262 transitions. Second operand 5 states. [2020-09-25 09:05:17,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:17,086 INFO L93 Difference]: Finished difference Result 10368 states and 12762 transitions. [2020-09-25 09:05:17,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:05:17,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-09-25 09:05:17,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:17,120 INFO L225 Difference]: With dead ends: 10368 [2020-09-25 09:05:17,120 INFO L226 Difference]: Without dead ends: 6054 [2020-09-25 09:05:17,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:17,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6054 states. [2020-09-25 09:05:17,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6054 to 5726. [2020-09-25 09:05:17,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5726 states. [2020-09-25 09:05:17,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5726 states to 5726 states and 7112 transitions. [2020-09-25 09:05:17,299 INFO L78 Accepts]: Start accepts. Automaton has 5726 states and 7112 transitions. Word has length 303 [2020-09-25 09:05:17,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:17,300 INFO L479 AbstractCegarLoop]: Abstraction has 5726 states and 7112 transitions. [2020-09-25 09:05:17,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:05:17,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5726 states and 7112 transitions. [2020-09-25 09:05:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-09-25 09:05:17,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:17,314 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:17,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:05:17,315 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:17,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:17,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1277968462, now seen corresponding path program 1 times [2020-09-25 09:05:17,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:17,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767581650] [2020-09-25 09:05:17,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:17,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking...