/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:55:01,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:55:01,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:55:01,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:55:01,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:55:01,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:55:01,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:55:01,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:55:01,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:55:01,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:55:01,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:55:01,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:55:01,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:55:01,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:55:01,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:55:01,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:55:01,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:55:01,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:55:01,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:55:01,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:55:01,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:55:01,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:55:01,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:55:01,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:55:01,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:55:01,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:55:01,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:55:01,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:55:01,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:55:01,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:55:01,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:55:01,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:55:01,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:55:01,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:55:01,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:55:01,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:55:01,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:55:01,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:55:01,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:55:01,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:55:01,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:55:01,999 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:55:02,027 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:55:02,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:55:02,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:55:02,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:55:02,029 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:55:02,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:55:02,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:55:02,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:55:02,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:55:02,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:55:02,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:55:02,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:55:02,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:55:02,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:55:02,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:55:02,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:55:02,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:55:02,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:55:02,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:55:02,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:55:02,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:55:02,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:55:02,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:55:02,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:55:02,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:55:02,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:55:02,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:55:02,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:55:02,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:55:02,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:55:02,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:55:02,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:55:02,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:55:02,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:55:02,592 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:55:02,593 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 07:55:02,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60e8b46d3/25017a066b4d464ea15593b9d5379276/FLAGb9e370f92 [2020-09-25 07:55:03,359 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:55:03,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 07:55:03,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60e8b46d3/25017a066b4d464ea15593b9d5379276/FLAGb9e370f92 [2020-09-25 07:55:03,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60e8b46d3/25017a066b4d464ea15593b9d5379276 [2020-09-25 07:55:03,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:55:03,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:55:03,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:03,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:55:03,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:55:03,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:03" (1/1) ... [2020-09-25 07:55:03,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3eacf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:03, skipping insertion in model container [2020-09-25 07:55:03,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:03" (1/1) ... [2020-09-25 07:55:03,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:55:03,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:55:04,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:04,105 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:55:04,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:04,332 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:55:04,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:04 WrapperNode [2020-09-25 07:55:04,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:04,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:55:04,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:55:04,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:55:04,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:04" (1/1) ... [2020-09-25 07:55:04,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:04" (1/1) ... [2020-09-25 07:55:04,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:04" (1/1) ... [2020-09-25 07:55:04,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:04" (1/1) ... [2020-09-25 07:55:04,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:04" (1/1) ... [2020-09-25 07:55:04,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:04" (1/1) ... [2020-09-25 07:55:04,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:04" (1/1) ... [2020-09-25 07:55:04,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:55:04,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:55:04,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:55:04,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:55:04,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:04" (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 07:55:04,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:55:04,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:55:04,531 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:55:04,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:55:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:55:04,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:55:04,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:55:04,532 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:55:04,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:55:04,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:55:04,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:55:05,911 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:55:05,912 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:55:05,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:05 BoogieIcfgContainer [2020-09-25 07:55:05,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:55:05,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:55:05,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:55:05,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:55:05,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:55:03" (1/3) ... [2020-09-25 07:55:05,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba23aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:05, skipping insertion in model container [2020-09-25 07:55:05,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:04" (2/3) ... [2020-09-25 07:55:05,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba23aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:05, skipping insertion in model container [2020-09-25 07:55:05,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:05" (3/3) ... [2020-09-25 07:55:05,931 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2020-09-25 07:55:05,943 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:55:05,955 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:55:05,978 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:55:06,011 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:55:06,011 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:55:06,011 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:55:06,011 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:55:06,011 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:55:06,012 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:55:06,012 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:55:06,012 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:55:06,042 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:55:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 07:55:06,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:06,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:06,065 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:06,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:06,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1349342961, now seen corresponding path program 1 times [2020-09-25 07:55:06,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:06,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213785230] [2020-09-25 07:55:06,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:06,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:06,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:08,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:08,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:09,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:09,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:10,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:11,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:11,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 07:55:11,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:55:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:55:11,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:11,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:11,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:55:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 07:55:11,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:55:11,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:11,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:11,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:11,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:11,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:11,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 07:55:11,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:11,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:55:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:11,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213785230] [2020-09-25 07:55:11,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:11,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:55:11,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40998261] [2020-09-25 07:55:11,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:55:11,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:11,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:55:11,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:55:11,734 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:55:14,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:14,037 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 07:55:14,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:55:14,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-09-25 07:55:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:14,087 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 07:55:14,087 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 07:55:14,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:14,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 07:55:14,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 07:55:14,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 07:55:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 07:55:14,238 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 130 [2020-09-25 07:55:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:14,239 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 07:55:14,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:55:14,240 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 07:55:14,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 07:55:14,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:14,249 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:14,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:55:14,250 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:14,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1975471173, now seen corresponding path program 1 times [2020-09-25 07:55:14,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:14,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290256762] [2020-09-25 07:55:14,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:14,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:15,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:16,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:16,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:17,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:17,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:18,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:19,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:19,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 07:55:19,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:55:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 07:55:19,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:19,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:55:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 07:55:19,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:19,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:19,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:19,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:19,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:19,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:19,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:19,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:19,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:19,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:19,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:19,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:19,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:19,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:19,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:19,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:19,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:19,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:19,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:55:19,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:19,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:19,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:19,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:19,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:55:19,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:19,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:19,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290256762] [2020-09-25 07:55:19,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:19,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:19,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94824585] [2020-09-25 07:55:19,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:19,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:19,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:19,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:19,607 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 07:55:21,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:21,423 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 07:55:21,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:21,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 07:55:21,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:21,436 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 07:55:21,436 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 07:55:21,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 07:55:21,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 07:55:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 07:55:21,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 07:55:21,506 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 148 [2020-09-25 07:55:21,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:21,507 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 07:55:21,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 07:55:21,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 07:55:21,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:21,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:21,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:55:21,513 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:21,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:21,514 INFO L82 PathProgramCache]: Analyzing trace with hash -240509204, now seen corresponding path program 1 times [2020-09-25 07:55:21,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:21,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517520060] [2020-09-25 07:55:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:21,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:21,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:22,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:24,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:24,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:26,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 07:55:26,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:55:26,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 07:55:26,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:26,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:26,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:26,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 07:55:26,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 07:55:26,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:26,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:26,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:26,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:26,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:26,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:55:26,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:26,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:26,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:26,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:26,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:55:26,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:26,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 07:55:26,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:26,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:26,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:55:26,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:26,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517520060] [2020-09-25 07:55:26,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:26,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:26,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101296484] [2020-09-25 07:55:26,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:26,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:26,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:26,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:26,795 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 5 states. [2020-09-25 07:55:29,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:29,178 INFO L93 Difference]: Finished difference Result 2668 states and 3421 transitions. [2020-09-25 07:55:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:29,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 07:55:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:29,185 INFO L225 Difference]: With dead ends: 2668 [2020-09-25 07:55:29,186 INFO L226 Difference]: Without dead ends: 973 [2020-09-25 07:55:29,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:29,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-09-25 07:55:29,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 963. [2020-09-25 07:55:29,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-09-25 07:55:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1177 transitions. [2020-09-25 07:55:29,224 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1177 transitions. Word has length 164 [2020-09-25 07:55:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:29,224 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1177 transitions. [2020-09-25 07:55:29,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:29,225 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1177 transitions. [2020-09-25 07:55:29,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 07:55:29,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:29,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:29,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:55:29,230 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:29,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:29,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1330770896, now seen corresponding path program 1 times [2020-09-25 07:55:29,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:29,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733352590] [2020-09-25 07:55:29,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:29,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:29,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:30,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:34,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 07:55:34,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:34,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 07:55:34,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:34,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:34,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:55:34,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 07:55:34,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 07:55:34,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:34,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:34,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:34,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:34,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:34,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:55:34,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:34,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:34,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:34,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:34,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:34,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:34,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:34,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:55:34,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:34,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 07:55:34,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:34,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:55:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:55:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:34,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733352590] [2020-09-25 07:55:34,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:34,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:55:34,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022034852] [2020-09-25 07:55:34,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:55:34,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:34,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:55:34,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:34,902 INFO L87 Difference]: Start difference. First operand 963 states and 1177 transitions. Second operand 8 states. [2020-09-25 07:55:38,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:38,458 INFO L93 Difference]: Finished difference Result 3018 states and 3924 transitions. [2020-09-25 07:55:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:55:38,459 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-09-25 07:55:38,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:38,475 INFO L225 Difference]: With dead ends: 3018 [2020-09-25 07:55:38,475 INFO L226 Difference]: Without dead ends: 1984 [2020-09-25 07:55:38,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:55:38,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2020-09-25 07:55:38,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1932. [2020-09-25 07:55:38,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1932 states. [2020-09-25 07:55:38,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2320 transitions. [2020-09-25 07:55:38,553 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2320 transitions. Word has length 168 [2020-09-25 07:55:38,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:38,553 INFO L479 AbstractCegarLoop]: Abstraction has 1932 states and 2320 transitions. [2020-09-25 07:55:38,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:55:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2320 transitions. [2020-09-25 07:55:38,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 07:55:38,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:38,562 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:38,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:38,563 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:38,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:38,563 INFO L82 PathProgramCache]: Analyzing trace with hash 935964046, now seen corresponding path program 1 times [2020-09-25 07:55:38,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:38,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193417287] [2020-09-25 07:55:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:39,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:39,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:43,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:43,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 07:55:43,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:55:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 07:55:43,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:43,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 07:55:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 07:55:43,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:43,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:43,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:43,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:43,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:55:43,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:43,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:43,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:43,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:43,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:43,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:43,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:43,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:55:43,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:43,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:43,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:43,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:43,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:43,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:43,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:55:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:43,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:43,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:43,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 07:55:43,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 07:55:43,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:43,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:43,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:55:43,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 07:55:43,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193417287] [2020-09-25 07:55:43,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:43,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:43,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944043817] [2020-09-25 07:55:43,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:43,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:43,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:43,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:43,873 INFO L87 Difference]: Start difference. First operand 1932 states and 2320 transitions. Second operand 5 states. [2020-09-25 07:55:45,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:45,815 INFO L93 Difference]: Finished difference Result 4973 states and 6157 transitions. [2020-09-25 07:55:45,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:45,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-09-25 07:55:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:45,834 INFO L225 Difference]: With dead ends: 4973 [2020-09-25 07:55:45,834 INFO L226 Difference]: Without dead ends: 3063 [2020-09-25 07:55:45,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:45,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2020-09-25 07:55:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 2994. [2020-09-25 07:55:45,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2994 states. [2020-09-25 07:55:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 3557 transitions. [2020-09-25 07:55:45,942 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 3557 transitions. Word has length 192 [2020-09-25 07:55:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:45,943 INFO L479 AbstractCegarLoop]: Abstraction has 2994 states and 3557 transitions. [2020-09-25 07:55:45,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:45,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 3557 transitions. [2020-09-25 07:55:45,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 07:55:45,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:45,955 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:45,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:55:45,955 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:45,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:45,956 INFO L82 PathProgramCache]: Analyzing trace with hash 12118133, now seen corresponding path program 1 times [2020-09-25 07:55:45,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:45,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236401353] [2020-09-25 07:55:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:46,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:47,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:48,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:51,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:51,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 07:55:51,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:55:51,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 07:55:51,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:51,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:55:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-25 07:55:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 07:55:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:51,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:51,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:51,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:51,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:51,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:51,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:51,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:51,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:51,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:51,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:51,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:51,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:55:51,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:55:51,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:51,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:51,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 07:55:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:51,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:51,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:51,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:55:51,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 07:55:51,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:51,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:55:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:55:51,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 07:55:51,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236401353] [2020-09-25 07:55:51,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:51,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:55:51,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505794200] [2020-09-25 07:55:51,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:55:51,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:51,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:55:51,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:51,524 INFO L87 Difference]: Start difference. First operand 2994 states and 3557 transitions. Second operand 8 states.