/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:46:37,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:46:37,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:46:37,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:46:37,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:46:37,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:46:37,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:46:37,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:46:37,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:46:37,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:46:37,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:46:37,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:46:37,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:46:37,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:46:37,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:46:37,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:46:37,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:46:37,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:46:37,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:46:37,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:46:37,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:46:37,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:46:37,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:46:37,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:46:37,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:46:37,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:46:37,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:46:37,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:46:37,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:46:37,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:46:37,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:46:37,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:46:37,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:46:37,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:46:37,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:46:37,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:46:37,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:46:37,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:46:37,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:46:37,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:46:37,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:46:37,987 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 06:46:38,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:46:38,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:46:38,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:46:38,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:46:38,040 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:46:38,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:46:38,041 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:46:38,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:46:38,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:46:38,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:46:38,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:46:38,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:46:38,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:46:38,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:46:38,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:46:38,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:46:38,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:46:38,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:46:38,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:46:38,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:46:38,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:46:38,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:38,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:46:38,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:46:38,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:46:38,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:46:38,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:46:38,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:46:38,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:46:38,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:46:38,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:46:38,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:46:38,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:46:38,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:46:38,603 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:46:38,604 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 06:46:38,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36ddba5b3/df940f3273154e53ab849d44329252ff/FLAG5da04ec2f [2020-09-25 06:46:39,279 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:46:39,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 06:46:39,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36ddba5b3/df940f3273154e53ab849d44329252ff/FLAG5da04ec2f [2020-09-25 06:46:39,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36ddba5b3/df940f3273154e53ab849d44329252ff [2020-09-25 06:46:39,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:46:39,560 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:46:39,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:39,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:46:39,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:46:39,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:39" (1/1) ... [2020-09-25 06:46:39,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b22a6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:39, skipping insertion in model container [2020-09-25 06:46:39,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:39" (1/1) ... [2020-09-25 06:46:39,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:46:39,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:46:40,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:40,228 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:46:40,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:40,337 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:46:40,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:40 WrapperNode [2020-09-25 06:46:40,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:40,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:46:40,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:46:40,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:46:40,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:40" (1/1) ... [2020-09-25 06:46:40,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:40" (1/1) ... [2020-09-25 06:46:40,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:40" (1/1) ... [2020-09-25 06:46:40,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:40" (1/1) ... [2020-09-25 06:46:40,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:40" (1/1) ... [2020-09-25 06:46:40,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:40" (1/1) ... [2020-09-25 06:46:40,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:40" (1/1) ... [2020-09-25 06:46:40,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:46:40,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:46:40,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:46:40,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:46:40,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:40" (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 06:46:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:46:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:46:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:46:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:46:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:46:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:46:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:46:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:46:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:46:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:46:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:46:42,138 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:46:42,138 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:46:42,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:42 BoogieIcfgContainer [2020-09-25 06:46:42,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:46:42,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:46:42,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:46:42,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:46:42,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:46:39" (1/3) ... [2020-09-25 06:46:42,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651fb3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:42, skipping insertion in model container [2020-09-25 06:46:42,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:40" (2/3) ... [2020-09-25 06:46:42,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651fb3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:42, skipping insertion in model container [2020-09-25 06:46:42,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:42" (3/3) ... [2020-09-25 06:46:42,168 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label05.c [2020-09-25 06:46:42,181 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:46:42,196 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:46:42,219 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:46:42,255 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:46:42,256 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:46:42,256 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:46:42,256 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:46:42,256 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:46:42,256 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:46:42,257 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:46:42,257 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:46:42,289 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:46:42,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 06:46:42,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:42,303 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] [2020-09-25 06:46:42,303 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:42,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:42,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1858369017, now seen corresponding path program 1 times [2020-09-25 06:46:42,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:42,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068345238] [2020-09-25 06:46:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:42,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:42,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:42,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:43,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:43,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 06:46:43,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:46:43,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-09-25 06:46:43,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:43,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:46:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 06:46:43,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:46:43,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:43,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:43,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:43,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:43,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:43,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 06:46:43,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:43,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:46:43,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:43,522 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 06:46:43,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068345238] [2020-09-25 06:46:43,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:43,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:46:43,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338321773] [2020-09-25 06:46:43,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:43,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:43,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:43,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:43,560 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 06:46:46,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:46,659 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 06:46:46,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:46:46,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-09-25 06:46:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:46,689 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 06:46:46,689 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 06:46:46,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 06:46:46,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 06:46:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 06:46:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 06:46:46,827 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 71 [2020-09-25 06:46:46,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:46,827 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 06:46:46,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:46,828 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 06:46:46,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 06:46:46,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:46,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:46,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:46:46,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:46,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2032396842, now seen corresponding path program 1 times [2020-09-25 06:46:46,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:46,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866657858] [2020-09-25 06:46:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:46,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:48,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:51,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 06:46:51,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:46:51,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:46:51,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:51,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:46:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:46:51,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:51,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:51,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:51,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:51,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:46:51,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:51,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:46:51,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:52,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:46:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:52,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:52,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:52,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:46:52,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:52,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 06:46:52,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:52,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:52,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:52,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:52,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:46:52,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 24 [2020-09-25 06:46:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:52,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866657858] [2020-09-25 06:46:52,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:52,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:46:52,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281718526] [2020-09-25 06:46:52,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:52,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:52,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:52,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:52,320 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 7 states. [2020-09-25 06:46:54,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:54,527 INFO L93 Difference]: Finished difference Result 1778 states and 2274 transitions. [2020-09-25 06:46:54,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:46:54,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-09-25 06:46:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:54,538 INFO L225 Difference]: With dead ends: 1778 [2020-09-25 06:46:54,538 INFO L226 Difference]: Without dead ends: 1066 [2020-09-25 06:46:54,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:46:54,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-09-25 06:46:54,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1038. [2020-09-25 06:46:54,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-09-25 06:46:54,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1238 transitions. [2020-09-25 06:46:54,620 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1238 transitions. Word has length 154 [2020-09-25 06:46:54,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:54,623 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1238 transitions. [2020-09-25 06:46:54,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:54,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1238 transitions. [2020-09-25 06:46:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 06:46:54,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:54,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:54,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:46:54,632 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:54,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:54,632 INFO L82 PathProgramCache]: Analyzing trace with hash 659489306, now seen corresponding path program 1 times [2020-09-25 06:46:54,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:54,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877415870] [2020-09-25 06:46:54,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:54,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:54,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:54,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:55,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:59,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 06:46:59,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:59,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:46:59,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:59,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:46:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:46:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 06:46:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:59,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:59,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:59,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:59,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:46:59,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:59,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:59,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:46:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:59,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:59,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:46:59,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 06:46:59,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:59,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:46:59,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:59,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:46:59,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:00,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877415870] [2020-09-25 06:47:00,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:00,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:47:00,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138248705] [2020-09-25 06:47:00,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:47:00,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:00,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:47:00,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:00,017 INFO L87 Difference]: Start difference. First operand 1038 states and 1238 transitions. Second operand 6 states. [2020-09-25 06:47:02,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:02,923 INFO L93 Difference]: Finished difference Result 2906 states and 3657 transitions. [2020-09-25 06:47:02,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:47:02,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-25 06:47:02,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:02,941 INFO L225 Difference]: With dead ends: 2906 [2020-09-25 06:47:02,941 INFO L226 Difference]: Without dead ends: 2033 [2020-09-25 06:47:02,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 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 06:47:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2020-09-25 06:47:03,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 1674. [2020-09-25 06:47:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2020-09-25 06:47:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2115 transitions. [2020-09-25 06:47:03,023 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2115 transitions. Word has length 160 [2020-09-25 06:47:03,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:03,026 INFO L479 AbstractCegarLoop]: Abstraction has 1674 states and 2115 transitions. [2020-09-25 06:47:03,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:47:03,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2115 transitions. [2020-09-25 06:47:03,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 06:47:03,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:03,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:03,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:47:03,035 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:03,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:03,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1803334496, now seen corresponding path program 1 times [2020-09-25 06:47:03,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:03,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673856103] [2020-09-25 06:47:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:03,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:03,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:03,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:04,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:04,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 06:47:04,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:47:04,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1617 [2020-09-25 06:47:04,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:04,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:04,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:04,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:47:04,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:47:04,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:04,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:04,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:04,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:04,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:04,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:04,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:47:04,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:04,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:04,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:04,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:47:04,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:04,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:05,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 06:47:05,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:05,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 06:47:05,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:05,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 06:47:05,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:05,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673856103] [2020-09-25 06:47:05,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:05,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:47:05,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681957544] [2020-09-25 06:47:05,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:05,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:05,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:05,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:05,191 INFO L87 Difference]: Start difference. First operand 1674 states and 2115 transitions. Second operand 7 states. [2020-09-25 06:47:08,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:08,122 INFO L93 Difference]: Finished difference Result 4469 states and 6801 transitions. [2020-09-25 06:47:08,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:47:08,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 06:47:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:08,161 INFO L225 Difference]: With dead ends: 4469 [2020-09-25 06:47:08,161 INFO L226 Difference]: Without dead ends: 2960 [2020-09-25 06:47:08,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:47:08,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-09-25 06:47:08,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 2626. [2020-09-25 06:47:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2626 states. [2020-09-25 06:47:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 3447 transitions. [2020-09-25 06:47:08,321 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 3447 transitions. Word has length 176 [2020-09-25 06:47:08,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:08,322 INFO L479 AbstractCegarLoop]: Abstraction has 2626 states and 3447 transitions. [2020-09-25 06:47:08,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 3447 transitions. [2020-09-25 06:47:08,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 06:47:08,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:08,329 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:08,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:47:08,329 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:08,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:08,330 INFO L82 PathProgramCache]: Analyzing trace with hash -772883364, now seen corresponding path program 1 times [2020-09-25 06:47:08,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:08,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870579104] [2020-09-25 06:47:08,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:08,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:08,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:08,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:08,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:09,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:09,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:10,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:11,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:13,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:13,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-25 06:47:13,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:47:13,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:47:13,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:13,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:13,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:13,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:47:13,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:47:13,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:13,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:13,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:13,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:13,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:13,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:13,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:47:13,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:13,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:13,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:13,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:13,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:13,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:13,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:13,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:13,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:13,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 06:47:13,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:13,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:47:13,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:13,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:47:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:13,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:13,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:47:13,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 06:47:13,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:13,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:13,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:13,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:13,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:47:13,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:13,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870579104] [2020-09-25 06:47:13,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:13,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:47:13,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44909075] [2020-09-25 06:47:13,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:13,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:13,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:13,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:13,915 INFO L87 Difference]: Start difference. First operand 2626 states and 3447 transitions. Second operand 8 states. [2020-09-25 06:47:16,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:16,992 INFO L93 Difference]: Finished difference Result 6213 states and 8496 transitions. [2020-09-25 06:47:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:47:16,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 243 [2020-09-25 06:47:16,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:17,011 INFO L225 Difference]: With dead ends: 6213 [2020-09-25 06:47:17,012 INFO L226 Difference]: Without dead ends: 2952 [2020-09-25 06:47:17,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:47:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-09-25 06:47:17,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2730. [2020-09-25 06:47:17,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2730 states. [2020-09-25 06:47:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3456 transitions. [2020-09-25 06:47:17,122 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3456 transitions. Word has length 243 [2020-09-25 06:47:17,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:17,122 INFO L479 AbstractCegarLoop]: Abstraction has 2730 states and 3456 transitions. [2020-09-25 06:47:17,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3456 transitions. [2020-09-25 06:47:17,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-25 06:47:17,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:17,129 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:17,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:17,130 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:17,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:17,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1488757271, now seen corresponding path program 1 times [2020-09-25 06:47:17,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:17,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424650029] [2020-09-25 06:47:17,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:17,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:17,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:17,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:22,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-09-25 06:47:22,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:22,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:47:22,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:22,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:47:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 06:47:22,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:22,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:22,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:22,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:22,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:47:22,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:22,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:22,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:22,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:22,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:22,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:22,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:22,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 06:47:22,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:22,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:47:22,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:22,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:47:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:22,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:22,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 06:47:22,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:22,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 06:47:22,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:22,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 06:47:22,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:22,780 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:22,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424650029] [2020-09-25 06:47:22,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:22,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:47:22,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419478634] [2020-09-25 06:47:22,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:22,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:22,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:22,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:22,783 INFO L87 Difference]: Start difference. First operand 2730 states and 3456 transitions. Second operand 8 states. [2020-09-25 06:47:25,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:25,568 INFO L93 Difference]: Finished difference Result 6915 states and 9040 transitions. [2020-09-25 06:47:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:47:25,569 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 258 [2020-09-25 06:47:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:25,590 INFO L225 Difference]: With dead ends: 6915 [2020-09-25 06:47:25,590 INFO L226 Difference]: Without dead ends: 4188 [2020-09-25 06:47:25,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:47:25,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2020-09-25 06:47:25,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3839. [2020-09-25 06:47:25,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3839 states. [2020-09-25 06:47:25,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 4950 transitions. [2020-09-25 06:47:25,708 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 4950 transitions. Word has length 258 [2020-09-25 06:47:25,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:25,709 INFO L479 AbstractCegarLoop]: Abstraction has 3839 states and 4950 transitions. [2020-09-25 06:47:25,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 4950 transitions. [2020-09-25 06:47:25,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 06:47:25,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:25,718 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, 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] [2020-09-25 06:47:25,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:47:25,719 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:25,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:25,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1172462050, now seen corresponding path program 1 times [2020-09-25 06:47:25,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:25,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153339346] [2020-09-25 06:47:25,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:25,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking...