/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 SequenceOfStatements --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:57:46,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:57:46,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:57:46,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:57:46,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:57:46,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:57:46,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:57:46,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:57:46,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:57:46,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:57:46,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:57:46,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:57:46,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:57:46,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:57:46,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:57:46,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:57:46,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:57:46,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:57:46,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:57:46,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:57:46,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:57:46,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:57:46,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:57:46,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:57:46,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:57:46,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:57:46,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:57:46,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:57:46,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:57:46,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:57:46,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:57:46,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:57:46,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:57:46,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:57:46,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:57:46,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:57:46,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:57:46,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:57:46,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:57:47,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:57:47,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:57:47,008 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 [2020-10-14 03:57:47,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:57:47,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:57:47,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:57:47,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:57:47,056 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:57:47,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:57:47,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:57:47,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:57:47,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:57:47,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:57:47,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:57:47,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:57:47,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:57:47,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:57:47,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:57:47,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:57:47,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:57:47,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:57:47,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:57:47,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:57:47,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:57:47,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:57:47,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:57:47,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:57:47,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:57:47,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:57:47,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:57:47,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:57:47,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:57:47,063 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 -> SequenceOfStatements 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:57:47,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:57:47,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:57:47,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:57:47,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:57:47,429 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:57:47,429 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14.c [2020-10-14 03:57:47,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/484805755/f23da0d6203c49058e299969a07af2a5/FLAG9e23970e3 [2020-10-14 03:57:48,197 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:57:48,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label14.c [2020-10-14 03:57:48,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/484805755/f23da0d6203c49058e299969a07af2a5/FLAG9e23970e3 [2020-10-14 03:57:48,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/484805755/f23da0d6203c49058e299969a07af2a5 [2020-10-14 03:57:48,322 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:57:48,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:57:48,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:57:48,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:57:48,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:57:48,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:57:48" (1/1) ... [2020-10-14 03:57:48,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:57:48, skipping insertion in model container [2020-10-14 03:57:48,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:57:48" (1/1) ... [2020-10-14 03:57:48,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:57:48,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:57:49,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:57:49,718 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:57:50,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:57:50,229 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:57:50,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:57:50 WrapperNode [2020-10-14 03:57:50,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:57:50,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:57:50,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:57:50,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:57:50,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:57:50" (1/1) ... [2020-10-14 03:57:50,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:57:50" (1/1) ... [2020-10-14 03:57:50,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:57:50" (1/1) ... [2020-10-14 03:57:50,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:57:50" (1/1) ... [2020-10-14 03:57:50,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:57:50" (1/1) ... [2020-10-14 03:57:50,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:57:50" (1/1) ... [2020-10-14 03:57:50,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:57:50" (1/1) ... [2020-10-14 03:57:50,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:57:50,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:57:50,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:57:50,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:57:50,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:57:50" (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 [2020-10-14 03:57:50,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:57:50,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:57:50,689 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:57:50,689 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:57:50,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:57:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:57:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:57:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:57:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:57:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:57:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:57:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:57:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:58:00,542 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:58:00,543 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:58:00,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:58:00 BoogieIcfgContainer [2020-10-14 03:58:00,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:58:00,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:58:00,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:58:00,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:58:00,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:57:48" (1/3) ... [2020-10-14 03:58:00,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae64623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:58:00, skipping insertion in model container [2020-10-14 03:58:00,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:57:50" (2/3) ... [2020-10-14 03:58:00,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae64623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:58:00, skipping insertion in model container [2020-10-14 03:58:00,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:58:00" (3/3) ... [2020-10-14 03:58:00,584 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label14.c [2020-10-14 03:58:00,597 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:58:00,614 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:58:00,634 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:58:00,679 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:58:00,680 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:58:00,680 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:58:00,680 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:58:00,680 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:58:00,680 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:58:00,680 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:58:00,681 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:58:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 03:58:00,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 03:58:00,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:00,766 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] [2020-10-14 03:58:00,766 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:00,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:00,778 INFO L82 PathProgramCache]: Analyzing trace with hash 816396385, now seen corresponding path program 1 times [2020-10-14 03:58:00,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:00,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877553453] [2020-10-14 03:58:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:01,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:01,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:01,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 03:58:01,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:01,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-14 03:58:01,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:01,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:01,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:58:01,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:58:01,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 03:58:01,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 03:58:02,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:02,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:02,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:02,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:02,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 03:58:02,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:02,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:02,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:02,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:58:02,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:58:02,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877553453] [2020-10-14 03:58:02,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:58:02,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:58:02,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912935610] [2020-10-14 03:58:02,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:58:02,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:02,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:58:02,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:58:02,134 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 03:58:16,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:16,850 INFO L93 Difference]: Finished difference Result 1716 states and 3126 transitions. [2020-10-14 03:58:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:58:16,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 03:58:16,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:16,883 INFO L225 Difference]: With dead ends: 1716 [2020-10-14 03:58:16,883 INFO L226 Difference]: Without dead ends: 1034 [2020-10-14 03:58:16,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:58:16,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-10-14 03:58:17,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1008. [2020-10-14 03:58:17,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-10-14 03:58:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1705 transitions. [2020-10-14 03:58:17,025 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1705 transitions. Word has length 53 [2020-10-14 03:58:17,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:17,026 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 1705 transitions. [2020-10-14 03:58:17,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:58:17,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1705 transitions. [2020-10-14 03:58:17,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 03:58:17,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:17,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:58:17,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:58:17,034 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:17,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:17,035 INFO L82 PathProgramCache]: Analyzing trace with hash -885696909, now seen corresponding path program 1 times [2020-10-14 03:58:17,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:17,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856998866] [2020-10-14 03:58:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:17,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:17,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:18,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:18,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 03:58:18,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:58:18,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1523 [2020-10-14 03:58:18,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:18,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:58:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 03:58:18,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:58:18,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:18,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:18,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:18,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:18,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:58:18,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:18,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:18,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:18,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:18,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:18,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:58:18,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:18,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:58:18,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:18,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:58:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:58:18,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856998866] [2020-10-14 03:58:18,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:18,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:58:18,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039709973] [2020-10-14 03:58:18,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:58:18,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:18,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:58:18,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:58:18,936 INFO L87 Difference]: Start difference. First operand 1008 states and 1705 transitions. Second operand 5 states. [2020-10-14 03:58:33,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:33,897 INFO L93 Difference]: Finished difference Result 2916 states and 4999 transitions. [2020-10-14 03:58:33,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:58:33,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-14 03:58:33,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:33,913 INFO L225 Difference]: With dead ends: 2916 [2020-10-14 03:58:33,913 INFO L226 Difference]: Without dead ends: 1914 [2020-10-14 03:58:33,917 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 [2020-10-14 03:58:33,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-10-14 03:58:33,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1899. [2020-10-14 03:58:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1899 states. [2020-10-14 03:58:33,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2834 transitions. [2020-10-14 03:58:33,982 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2834 transitions. Word has length 122 [2020-10-14 03:58:33,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:33,983 INFO L479 AbstractCegarLoop]: Abstraction has 1899 states and 2834 transitions. [2020-10-14 03:58:33,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:58:33,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2834 transitions. [2020-10-14 03:58:33,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 03:58:33,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:33,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:58:33,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:58:33,990 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:33,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:33,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1822854977, now seen corresponding path program 1 times [2020-10-14 03:58:33,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:33,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045683705] [2020-10-14 03:58:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:34,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:34,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:34,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:35,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:35,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:35,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 03:58:35,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:58:35,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1945 [2020-10-14 03:58:35,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:35,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:58:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 03:58:35,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:36,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:36,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:36,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:36,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:36,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:36,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:58:36,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:36,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:36,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:36,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:36,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:36,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:36,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:58:36,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:36,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 03:58:36,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:36,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:36,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:58:36,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:58:36,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045683705] [2020-10-14 03:58:36,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:36,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:58:36,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499874714] [2020-10-14 03:58:36,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:58:36,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:36,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:58:36,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:58:36,339 INFO L87 Difference]: Start difference. First operand 1899 states and 2834 transitions. Second operand 5 states. [2020-10-14 03:58:48,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:48,010 INFO L93 Difference]: Finished difference Result 5555 states and 8442 transitions. [2020-10-14 03:58:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:58:48,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 03:58:48,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:48,037 INFO L225 Difference]: With dead ends: 5555 [2020-10-14 03:58:48,037 INFO L226 Difference]: Without dead ends: 3662 [2020-10-14 03:58:48,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:58:48,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2020-10-14 03:58:48,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3654. [2020-10-14 03:58:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2020-10-14 03:58:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 4899 transitions. [2020-10-14 03:58:48,179 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 4899 transitions. Word has length 128 [2020-10-14 03:58:48,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:48,181 INFO L479 AbstractCegarLoop]: Abstraction has 3654 states and 4899 transitions. [2020-10-14 03:58:48,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:58:48,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 4899 transitions. [2020-10-14 03:58:48,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 03:58:48,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:48,194 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:58:48,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:58:48,195 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:48,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:48,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1838032438, now seen corresponding path program 1 times [2020-10-14 03:58:48,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:48,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276964046] [2020-10-14 03:58:48,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:48,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:48,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:50,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:50,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 03:58:50,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:58:50,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2101 [2020-10-14 03:58:50,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:50,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 03:58:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 03:58:50,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 03:58:50,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:50,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:50,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:50,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:50,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:58:50,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:50,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:50,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:50,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:50,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 03:58:50,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:50,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 03:58:50,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:50,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:58:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:58:50,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276964046] [2020-10-14 03:58:50,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:50,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:58:50,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967043475] [2020-10-14 03:58:50,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:58:50,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:50,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:58:50,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:58:50,896 INFO L87 Difference]: Start difference. First operand 3654 states and 4899 transitions. Second operand 6 states. [2020-10-14 03:59:02,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:02,922 INFO L93 Difference]: Finished difference Result 10379 states and 14271 transitions. [2020-10-14 03:59:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:59:02,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-10-14 03:59:02,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:02,967 INFO L225 Difference]: With dead ends: 10379 [2020-10-14 03:59:02,968 INFO L226 Difference]: Without dead ends: 6731 [2020-10-14 03:59:02,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:59:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6731 states. [2020-10-14 03:59:03,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6731 to 6286. [2020-10-14 03:59:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6286 states. [2020-10-14 03:59:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6286 states to 6286 states and 8650 transitions. [2020-10-14 03:59:03,295 INFO L78 Accepts]: Start accepts. Automaton has 6286 states and 8650 transitions. Word has length 162 [2020-10-14 03:59:03,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:03,295 INFO L479 AbstractCegarLoop]: Abstraction has 6286 states and 8650 transitions. [2020-10-14 03:59:03,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:59:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 6286 states and 8650 transitions. [2020-10-14 03:59:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 03:59:03,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:03,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:59:03,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:59:03,301 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:03,302 INFO L82 PathProgramCache]: Analyzing trace with hash 164473144, now seen corresponding path program 1 times [2020-10-14 03:59:03,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:03,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422847597] [2020-10-14 03:59:03,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:03,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:03,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:04,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:05,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:05,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 03:59:05,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:59:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1812 [2020-10-14 03:59:05,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:05,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-14 03:59:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 03:59:05,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:05,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:05,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:05,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:05,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:05,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:05,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:59:05,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:05,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:05,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:05,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:05,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:05,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:05,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 03:59:05,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:05,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 03:59:05,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:05,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:05,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:05,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 03:59:05,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 03:59:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:59:05,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422847597] [2020-10-14 03:59:05,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:05,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:59:05,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422625463] [2020-10-14 03:59:05,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:59:05,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:05,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:59:05,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:59:05,664 INFO L87 Difference]: Start difference. First operand 6286 states and 8650 transitions. Second operand 5 states. [2020-10-14 03:59:19,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:19,373 INFO L93 Difference]: Finished difference Result 15668 states and 22576 transitions. [2020-10-14 03:59:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:59:19,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-14 03:59:19,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:19,439 INFO L225 Difference]: With dead ends: 15668 [2020-10-14 03:59:19,439 INFO L226 Difference]: Without dead ends: 9388 [2020-10-14 03:59:19,463 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 [2020-10-14 03:59:19,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9388 states. [2020-10-14 03:59:19,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9388 to 9373. [2020-10-14 03:59:19,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9373 states. [2020-10-14 03:59:19,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9373 states to 9373 states and 13352 transitions. [2020-10-14 03:59:19,809 INFO L78 Accepts]: Start accepts. Automaton has 9373 states and 13352 transitions. Word has length 194 [2020-10-14 03:59:19,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:19,810 INFO L479 AbstractCegarLoop]: Abstraction has 9373 states and 13352 transitions. [2020-10-14 03:59:19,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:59:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 9373 states and 13352 transitions. [2020-10-14 03:59:19,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 03:59:19,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:19,818 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:59:19,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:59:19,819 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:19,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:19,820 INFO L82 PathProgramCache]: Analyzing trace with hash 329287068, now seen corresponding path program 1 times [2020-10-14 03:59:19,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:19,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438848751] [2020-10-14 03:59:19,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:20,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:20,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:20,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:22,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:24,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:24,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 03:59:24,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:59:24,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 03:59:24,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:24,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:59:24,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:59:24,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:25,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:25,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:25,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:25,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:25,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:25,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:59:25,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:25,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:25,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:25,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:25,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:25,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:25,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:59:25,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:25,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 03:59:25,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:25,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:59:25,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:25,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 03:59:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:25,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:25,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:25,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 03:59:25,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:25,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 03:59:25,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:25,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:59:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:59:25,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:59:25,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438848751] [2020-10-14 03:59:25,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:25,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:59:25,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567453976] [2020-10-14 03:59:25,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:59:25,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:25,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:59:25,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:59:25,592 INFO L87 Difference]: Start difference. First operand 9373 states and 13352 transitions. Second operand 7 states. [2020-10-14 03:59:44,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:44,341 INFO L93 Difference]: Finished difference Result 20189 states and 29336 transitions. [2020-10-14 03:59:44,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:59:44,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-10-14 03:59:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:44,390 INFO L225 Difference]: With dead ends: 20189 [2020-10-14 03:59:44,391 INFO L226 Difference]: Without dead ends: 8604 [2020-10-14 03:59:44,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:59:44,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8604 states. [2020-10-14 03:59:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8604 to 7259. [2020-10-14 03:59:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7259 states. [2020-10-14 03:59:44,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7259 states to 7259 states and 9403 transitions. [2020-10-14 03:59:44,685 INFO L78 Accepts]: Start accepts. Automaton has 7259 states and 9403 transitions. Word has length 219 [2020-10-14 03:59:44,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:44,686 INFO L479 AbstractCegarLoop]: Abstraction has 7259 states and 9403 transitions. [2020-10-14 03:59:44,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:59:44,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7259 states and 9403 transitions. [2020-10-14 03:59:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 03:59:44,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:44,692 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:59:44,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:59:44,693 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:44,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:44,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2141787114, now seen corresponding path program 1 times [2020-10-14 03:59:44,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:44,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565994362] [2020-10-14 03:59:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:44,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:45,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:45,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 03:59:45,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:59:45,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-14 03:59:45,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:45,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 03:59:45,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:59:45,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:45,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:45,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:45,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:45,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:45,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:45,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:59:45,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:45,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:45,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:45,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:45,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:45,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:45,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:45,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:45,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:45,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:59:45,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:45,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 03:59:45,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:45,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:59:45,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:45,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:59:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:46,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:46,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 03:59:46,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 03:59:46,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:46,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:46,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:46,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:59:46,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:59:46,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:59:46,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565994362] [2020-10-14 03:59:46,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:46,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:59:46,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744947891] [2020-10-14 03:59:46,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:59:46,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:46,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:59:46,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:59:46,390 INFO L87 Difference]: Start difference. First operand 7259 states and 9403 transitions. Second operand 7 states. [2020-10-14 04:00:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:04,184 INFO L93 Difference]: Finished difference Result 18925 states and 25206 transitions. [2020-10-14 04:00:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:00:04,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-14 04:00:04,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:04,246 INFO L225 Difference]: With dead ends: 18925 [2020-10-14 04:00:04,247 INFO L226 Difference]: Without dead ends: 11672 [2020-10-14 04:00:04,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:00:04,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11672 states. [2020-10-14 04:00:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11672 to 11646. [2020-10-14 04:00:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11646 states. [2020-10-14 04:00:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11646 states to 11646 states and 14797 transitions. [2020-10-14 04:00:04,542 INFO L78 Accepts]: Start accepts. Automaton has 11646 states and 14797 transitions. Word has length 232 [2020-10-14 04:00:04,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:04,543 INFO L479 AbstractCegarLoop]: Abstraction has 11646 states and 14797 transitions. [2020-10-14 04:00:04,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:00:04,543 INFO L276 IsEmpty]: Start isEmpty. Operand 11646 states and 14797 transitions. [2020-10-14 04:00:04,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-14 04:00:04,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:04,555 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:00:04,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:00:04,556 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:04,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:04,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1187620138, now seen corresponding path program 1 times [2020-10-14 04:00:04,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:04,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418362641] [2020-10-14 04:00:04,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:04,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:04,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:06,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:08,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:08,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-14 04:00:08,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:00:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4084 [2020-10-14 04:00:08,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:08,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 04:00:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 04:00:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:00:08,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:08,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:08,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:08,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:08,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:08,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:00:08,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:08,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:08,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:08,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:08,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:08,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:09,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:09,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:09,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:09,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:00:09,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:09,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 04:00:09,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:09,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:09,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:09,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:00:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:09,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:09,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:09,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:00:09,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:09,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 04:00:09,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:09,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:09,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:09,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:09,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:00:09,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 04:00:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:09,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:09,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:09,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:00:09,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:09,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 04:00:09,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:09,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:09,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:00:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 04:00:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 04:00:09,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418362641] [2020-10-14 04:00:09,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:09,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:00:09,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404883107] [2020-10-14 04:00:09,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:00:09,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:09,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:00:09,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:00:09,646 INFO L87 Difference]: Start difference. First operand 11646 states and 14797 transitions. Second operand 7 states. [2020-10-14 04:00:30,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:30,841 INFO L93 Difference]: Finished difference Result 27580 states and 36934 transitions. [2020-10-14 04:00:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:00:30,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-10-14 04:00:30,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:30,922 INFO L225 Difference]: With dead ends: 27580 [2020-10-14 04:00:30,922 INFO L226 Difference]: Without dead ends: 15487 [2020-10-14 04:00:30,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:00:30,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15487 states. [2020-10-14 04:00:31,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15487 to 15373. [2020-10-14 04:00:31,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15373 states. [2020-10-14 04:00:31,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15373 states to 15373 states and 19458 transitions. [2020-10-14 04:00:31,297 INFO L78 Accepts]: Start accepts. Automaton has 15373 states and 19458 transitions. Word has length 302 [2020-10-14 04:00:31,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:31,299 INFO L479 AbstractCegarLoop]: Abstraction has 15373 states and 19458 transitions. [2020-10-14 04:00:31,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:00:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand 15373 states and 19458 transitions. [2020-10-14 04:00:31,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-14 04:00:31,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:31,314 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:00:31,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:00:31,315 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:31,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:31,315 INFO L82 PathProgramCache]: Analyzing trace with hash 693945216, now seen corresponding path program 1 times [2020-10-14 04:00:31,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:31,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774996180] [2020-10-14 04:00:31,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:31,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:32,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:35,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:35,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-14 04:00:35,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:00:35,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4449 [2020-10-14 04:00:35,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:35,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:00:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:00:35,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:35,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:35,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:35,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:35,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:35,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:00:35,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:35,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:35,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:36,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:36,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:36,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:36,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:00:36,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:36,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 04:00:36,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:36,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:36,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:36,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:36,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:00:36,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:36,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:00:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:36,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:36,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:00:36,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:36,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 04:00:36,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:36,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:36,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:36,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:00:36,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 04:00:36,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:36,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 04:00:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:36,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:36,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:36,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:00:36,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:36,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 04:00:36,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:36,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:36,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:36,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 04:00:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:36,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 226 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 04:00:36,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774996180] [2020-10-14 04:00:36,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:36,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:00:36,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906166091] [2020-10-14 04:00:36,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:00:36,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:36,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:00:36,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:00:36,886 INFO L87 Difference]: Start difference. First operand 15373 states and 19458 transitions. Second operand 7 states. [2020-10-14 04:00:53,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:53,416 INFO L93 Difference]: Finished difference Result 34356 states and 43226 transitions. [2020-10-14 04:00:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:00:53,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-14 04:00:53,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:53,464 INFO L225 Difference]: With dead ends: 34356 [2020-10-14 04:00:53,465 INFO L226 Difference]: Without dead ends: 18989 [2020-10-14 04:00:53,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:00:53,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18989 states. [2020-10-14 04:00:53,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18989 to 18960. [2020-10-14 04:00:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18960 states. [2020-10-14 04:00:53,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18960 states to 18960 states and 23645 transitions. [2020-10-14 04:00:53,811 INFO L78 Accepts]: Start accepts. Automaton has 18960 states and 23645 transitions. Word has length 325 [2020-10-14 04:00:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:53,812 INFO L479 AbstractCegarLoop]: Abstraction has 18960 states and 23645 transitions. [2020-10-14 04:00:53,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:00:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 18960 states and 23645 transitions. [2020-10-14 04:00:53,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-14 04:00:53,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:53,821 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:00:53,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:00:53,822 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:53,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:53,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2053873439, now seen corresponding path program 1 times [2020-10-14 04:00:53,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:53,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442849900] [2020-10-14 04:00:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:54,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:56,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:56,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-14 04:00:56,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:00:56,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2205 [2020-10-14 04:00:56,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:56,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 04:00:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 04:00:56,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:00:56,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:56,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:56,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:56,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:56,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:56,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:00:56,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:56,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:56,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:56,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:56,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:56,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:56,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:56,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:00:56,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:00:56,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:56,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:56,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:00:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:56,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:56,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:00:56,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 04:00:56,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:56,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:00:56,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:56,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 04:00:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:56,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:56,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 04:00:56,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:56,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 04:00:56,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:56,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:00:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 04:00:56,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 04:00:56,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442849900] [2020-10-14 04:00:56,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:56,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:00:56,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869066371] [2020-10-14 04:00:56,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:00:56,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:56,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:00:56,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:00:56,971 INFO L87 Difference]: Start difference. First operand 18960 states and 23645 transitions. Second operand 7 states. [2020-10-14 04:01:23,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:23,810 INFO L93 Difference]: Finished difference Result 46894 states and 59396 transitions. [2020-10-14 04:01:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:01:23,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-14 04:01:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:23,895 INFO L225 Difference]: With dead ends: 46894 [2020-10-14 04:01:23,895 INFO L226 Difference]: Without dead ends: 27498 [2020-10-14 04:01:23,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:01:23,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27498 states. [2020-10-14 04:01:24,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27498 to 26575. [2020-10-14 04:01:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26575 states. [2020-10-14 04:01:24,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26575 states to 26575 states and 32807 transitions. [2020-10-14 04:01:24,386 INFO L78 Accepts]: Start accepts. Automaton has 26575 states and 32807 transitions. Word has length 329 [2020-10-14 04:01:24,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:24,387 INFO L479 AbstractCegarLoop]: Abstraction has 26575 states and 32807 transitions. [2020-10-14 04:01:24,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:01:24,387 INFO L276 IsEmpty]: Start isEmpty. Operand 26575 states and 32807 transitions. [2020-10-14 04:01:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-14 04:01:24,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:24,400 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:01:24,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:01:24,400 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:24,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:24,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2082958254, now seen corresponding path program 1 times [2020-10-14 04:01:24,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:24,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821352985] [2020-10-14 04:01:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:24,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:26,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:29,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:29,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-14 04:01:29,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:01:29,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4861 [2020-10-14 04:01:29,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:29,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:29,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:29,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-14 04:01:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 04:01:29,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:29,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:29,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:29,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:29,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:29,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:01:29,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:29,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:29,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:29,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:29,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:29,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:29,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:01:29,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:29,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 04:01:29,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:29,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:29,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:29,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:01:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:29,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:29,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 04:01:29,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:29,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 04:01:29,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:29,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:29,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:29,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:29,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-14 04:01:29,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:30,054 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 04:01:30,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821352985] [2020-10-14 04:01:30,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:01:30,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:01:30,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14399047] [2020-10-14 04:01:30,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:01:30,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:30,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:01:30,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:01:30,058 INFO L87 Difference]: Start difference. First operand 26575 states and 32807 transitions. Second operand 5 states.