/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/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:07:02,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:07:02,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:07:02,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:07:02,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:07:02,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:07:02,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:07:02,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:07:02,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:07:02,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:07:02,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:07:02,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:07:02,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:07:02,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:07:02,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:07:02,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:07:02,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:07:02,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:07:02,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:07:02,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:07:02,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:07:02,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:07:02,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:07:02,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:07:02,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:07:02,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:07:02,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:07:02,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:07:02,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:07:02,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:07:02,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:07:02,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:07:02,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:07:02,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:07:02,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:07:02,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:07:02,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:07:02,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:07:02,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:07:02,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:07:02,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:07:02,329 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 09:07:02,354 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:07:02,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:07:02,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:07:02,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:07:02,357 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:07:02,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:07:02,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:07:02,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:07:02,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:07:02,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:07:02,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:07:02,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:07:02,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:07:02,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:07:02,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:07:02,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:07:02,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:07:02,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:07:02,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:07:02,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:07:02,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:07:02,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:07:02,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:07:02,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:07:02,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:07:02,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:07:02,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:07:02,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:07:02,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:07:02,362 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 09:07:02,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:07:02,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:07:02,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:07:02,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:07:02,900 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:07:02,901 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 09:07:03,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9ca4881a/38b8ea70974a4a7baf419a1febad3799/FLAG0c928c144 [2020-09-25 09:07:03,717 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:07:03,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 09:07:03,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9ca4881a/38b8ea70974a4a7baf419a1febad3799/FLAG0c928c144 [2020-09-25 09:07:03,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9ca4881a/38b8ea70974a4a7baf419a1febad3799 [2020-09-25 09:07:03,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:07:03,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:07:03,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:07:03,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:07:03,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:07:03,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:07:03" (1/1) ... [2020-09-25 09:07:03,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:03, skipping insertion in model container [2020-09-25 09:07:03,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:07:03" (1/1) ... [2020-09-25 09:07:03,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:07:04,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:07:04,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:07:04,679 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:07:04,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:07:04,893 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:07:04,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:04 WrapperNode [2020-09-25 09:07:04,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:07:04,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:07:04,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:07:04,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:07:04,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:04" (1/1) ... [2020-09-25 09:07:04,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:04" (1/1) ... [2020-09-25 09:07:04,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:04" (1/1) ... [2020-09-25 09:07:04,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:04" (1/1) ... [2020-09-25 09:07:05,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:04" (1/1) ... [2020-09-25 09:07:05,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:04" (1/1) ... [2020-09-25 09:07:05,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:04" (1/1) ... [2020-09-25 09:07:05,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:07:05,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:07:05,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:07:05,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:07:05,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:04" (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 09:07:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:07:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:07:05,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:07:05,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:07:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:07:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:07:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:07:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:07:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:07:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:07:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:07:06,936 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:07:06,937 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:07:06,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:07:06 BoogieIcfgContainer [2020-09-25 09:07:06,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:07:06,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:07:06,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:07:06,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:07:06,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:07:03" (1/3) ... [2020-09-25 09:07:06,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af7c353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:07:06, skipping insertion in model container [2020-09-25 09:07:06,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:04" (2/3) ... [2020-09-25 09:07:06,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af7c353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:07:06, skipping insertion in model container [2020-09-25 09:07:06,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:07:06" (3/3) ... [2020-09-25 09:07:06,958 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-25 09:07:06,971 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:07:06,984 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:07:07,009 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:07:07,045 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:07:07,045 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:07:07,046 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:07:07,046 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:07:07,046 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:07:07,046 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:07:07,046 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:07:07,046 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:07:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 09:07:07,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 09:07:07,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:07,098 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] [2020-09-25 09:07:07,099 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:07,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:07,108 INFO L82 PathProgramCache]: Analyzing trace with hash -4985686, now seen corresponding path program 1 times [2020-09-25 09:07:07,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:07,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658661623] [2020-09-25 09:07:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:07,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:07,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:07,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:08,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 09:07:08,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:07:08,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-09-25 09:07:08,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:08,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:07:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:07:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 09:07:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:07:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:08,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:08,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:08,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:07:08,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:08,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:08,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:08,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:08,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:07:08,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:08,270 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 09:07:08,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658661623] [2020-09-25 09:07:08,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:07:08,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:07:08,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422235823] [2020-09-25 09:07:08,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:07:08,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:08,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:07:08,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:07:08,304 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 09:07:11,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:11,218 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-25 09:07:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:07:11,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 09:07:11,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:11,249 INFO L225 Difference]: With dead ends: 1656 [2020-09-25 09:07:11,249 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 09:07:11,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:07:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 09:07:11,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-25 09:07:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 09:07:11,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-25 09:07:11,382 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 67 [2020-09-25 09:07:11,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:11,383 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-25 09:07:11,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:07:11,383 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-25 09:07:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 09:07:11,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:11,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:11,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:07:11,393 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:11,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:11,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1033084141, now seen corresponding path program 1 times [2020-09-25 09:07:11,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:11,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732114289] [2020-09-25 09:07:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:11,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:11,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:11,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:11,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:12,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:13,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:16,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:16,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 09:07:16,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:07:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 09:07:16,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:16,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:07:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:07:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 09:07:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:16,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:16,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:16,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:16,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:16,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:07:16,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:16,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:16,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:16,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:16,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:07:16,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:16,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:16,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:16,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:16,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:07:16,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:16,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 09:07:16,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:16,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:16,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:16,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:16,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:07:16,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:07:16,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732114289] [2020-09-25 09:07:16,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:16,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:07:16,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676640146] [2020-09-25 09:07:16,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:07:16,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:16,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:07:16,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:07:16,775 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 6 states. [2020-09-25 09:07:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:19,739 INFO L93 Difference]: Finished difference Result 2086 states and 2595 transitions. [2020-09-25 09:07:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:07:19,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 09:07:19,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:19,755 INFO L225 Difference]: With dead ends: 2086 [2020-09-25 09:07:19,755 INFO L226 Difference]: Without dead ends: 1295 [2020-09-25 09:07:19,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:19,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2020-09-25 09:07:19,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1275. [2020-09-25 09:07:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1275 states. [2020-09-25 09:07:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1500 transitions. [2020-09-25 09:07:19,826 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1500 transitions. Word has length 146 [2020-09-25 09:07:19,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:19,829 INFO L479 AbstractCegarLoop]: Abstraction has 1275 states and 1500 transitions. [2020-09-25 09:07:19,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:07:19,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1500 transitions. [2020-09-25 09:07:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 09:07:19,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:19,849 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:19,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:07:19,850 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:19,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:19,850 INFO L82 PathProgramCache]: Analyzing trace with hash 149672492, now seen corresponding path program 1 times [2020-09-25 09:07:19,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:19,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918747127] [2020-09-25 09:07:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:19,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:22,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:24,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:24,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 09:07:24,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:07:24,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 09:07:24,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:24,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:07:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:07:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 09:07:24,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:07:25,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:25,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:25,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:25,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:25,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:25,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:07:25,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:25,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:25,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:25,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:25,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:07:25,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:25,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:25,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:25,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:25,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:25,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 09:07:25,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:07:25,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-09-25 09:07:25,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:25,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 09:07:25,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:07:25,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918747127] [2020-09-25 09:07:25,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:25,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:07:25,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253232114] [2020-09-25 09:07:25,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:07:25,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:25,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:07:25,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:07:25,641 INFO L87 Difference]: Start difference. First operand 1275 states and 1500 transitions. Second operand 6 states. [2020-09-25 09:07:28,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:28,446 INFO L93 Difference]: Finished difference Result 2985 states and 3681 transitions. [2020-09-25 09:07:28,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:07:28,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2020-09-25 09:07:28,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:28,462 INFO L225 Difference]: With dead ends: 2985 [2020-09-25 09:07:28,462 INFO L226 Difference]: Without dead ends: 1914 [2020-09-25 09:07:28,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:28,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-09-25 09:07:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1862. [2020-09-25 09:07:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1862 states. [2020-09-25 09:07:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2199 transitions. [2020-09-25 09:07:28,550 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2199 transitions. Word has length 216 [2020-09-25 09:07:28,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:28,552 INFO L479 AbstractCegarLoop]: Abstraction has 1862 states and 2199 transitions. [2020-09-25 09:07:28,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:07:28,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2199 transitions. [2020-09-25 09:07:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 09:07:28,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:28,560 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:07:28,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:07:28,561 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:28,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:28,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1277460696, now seen corresponding path program 1 times [2020-09-25 09:07:28,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:28,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906920543] [2020-09-25 09:07:28,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:28,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:28,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:30,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:31,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:32,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:33,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:33,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 09:07:33,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:07:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:07:33,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:33,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 09:07:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 09:07:33,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:33,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:33,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:33,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:33,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:33,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:33,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:07:33,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:33,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:33,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:33,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:33,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:33,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 09:07:33,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:33,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 09:07:33,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:33,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:33,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:33,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 09:07:33,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:33,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 09:07:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:33,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:34,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:34,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 09:07:34,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:34,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 09:07:34,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:34,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 09:07:34,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:07:34,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906920543] [2020-09-25 09:07:34,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:34,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:07:34,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519030213] [2020-09-25 09:07:34,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:07:34,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:34,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:07:34,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:07:34,505 INFO L87 Difference]: Start difference. First operand 1862 states and 2199 transitions. Second operand 7 states. [2020-09-25 09:07:38,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:38,250 INFO L93 Difference]: Finished difference Result 4214 states and 5159 transitions. [2020-09-25 09:07:38,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:07:38,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-09-25 09:07:38,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:38,274 INFO L225 Difference]: With dead ends: 4214 [2020-09-25 09:07:38,274 INFO L226 Difference]: Without dead ends: 2556 [2020-09-25 09:07:38,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:07:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2020-09-25 09:07:38,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2523. [2020-09-25 09:07:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2523 states. [2020-09-25 09:07:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 2964 transitions. [2020-09-25 09:07:38,368 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 2964 transitions. Word has length 254 [2020-09-25 09:07:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:38,369 INFO L479 AbstractCegarLoop]: Abstraction has 2523 states and 2964 transitions. [2020-09-25 09:07:38,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:07:38,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 2964 transitions. [2020-09-25 09:07:38,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-09-25 09:07:38,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:38,375 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:07:38,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:07:38,376 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:38,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:38,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1446145993, now seen corresponding path program 1 times [2020-09-25 09:07:38,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:38,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574244192] [2020-09-25 09:07:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:38,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:38,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:39,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:39,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:40,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:42,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:42,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:43,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:43,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-09-25 09:07:43,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:07:43,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 09:07:43,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:43,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:43,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:07:43,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 09:07:43,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 09:07:43,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:43,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:43,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:43,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:43,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:43,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:07:43,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:43,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:43,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:43,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:43,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:43,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:43,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 09:07:43,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:43,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 09:07:43,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:43,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:43,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:07:43,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 09:07:43,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:43,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 09:07:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:44,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:44,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 09:07:44,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:44,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 09:07:44,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:44,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:44,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 09:07:44,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:07:44,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574244192] [2020-09-25 09:07:44,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:44,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:07:44,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964122365] [2020-09-25 09:07:44,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:07:44,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:44,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:07:44,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:44,390 INFO L87 Difference]: Start difference. First operand 2523 states and 2964 transitions. Second operand 8 states. [2020-09-25 09:07:49,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:49,162 INFO L93 Difference]: Finished difference Result 5654 states and 6795 transitions. [2020-09-25 09:07:49,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:07:49,162 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 309 [2020-09-25 09:07:49,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:49,178 INFO L225 Difference]: With dead ends: 5654 [2020-09-25 09:07:49,178 INFO L226 Difference]: Without dead ends: 3335 [2020-09-25 09:07:49,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:07:49,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2020-09-25 09:07:49,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 3305. [2020-09-25 09:07:49,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3305 states. [2020-09-25 09:07:49,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3305 states to 3305 states and 3800 transitions. [2020-09-25 09:07:49,273 INFO L78 Accepts]: Start accepts. Automaton has 3305 states and 3800 transitions. Word has length 309 [2020-09-25 09:07:49,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:49,273 INFO L479 AbstractCegarLoop]: Abstraction has 3305 states and 3800 transitions. [2020-09-25 09:07:49,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:07:49,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3305 states and 3800 transitions. [2020-09-25 09:07:49,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-09-25 09:07:49,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:49,282 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:49,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:07:49,283 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:49,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:49,283 INFO L82 PathProgramCache]: Analyzing trace with hash -608953265, now seen corresponding path program 1 times [2020-09-25 09:07:49,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:49,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107356034] [2020-09-25 09:07:49,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:49,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:49,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:49,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:50,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:51,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:51,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking...